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Scientific & Educational >> Astronomy Abbreviations

Look through 3189 acronyms and abbreviations related to Astronomy:

• IMHO — In My Humble Opinion
• LAN — Local Area Network
• URL — Universal Resource Locator
• N/A — Not Applicable
• PPNE — Proto-Planetary Bebulae
• ETA — Estimated Time of Arrival
• MADOO — Madras Observatory Astronomical Observations
• HIV — Human Immunodeficiency Virus I
• PNX — Pulsar Network Exchange
• ASAP — As Soon As Possible (pronounced AY-sap)
• ANSI — American National Standards Institute, Inc.
• ROM — Read-Only Memory
• FTP — File Transfer Protocol
• BTW — By The Way
• PPM — parts per million
• LUNNO — Lunar Upper Navigation Nacelle Orb
• LASER — Light Amplification By Stimulated Emission Of Radiation (cf. Maser)
• HIPAA — Health Insurance Portability and Accountability Act of 1996
• ICD — Interface Control Document
• COB — close of business (End of duty day)
• CPU — Central Processing Unit
• A&AT — Astronomical and Astrophysical Transactions
• IP — Internet Protocol
• MM — Millimeter
• FIFO — First In, First Out
• WAXD — Wide-Angle X-Ray Diffraction
• A — Ampere
• S/N — Serial Number
• QC — Quality Control
• ISO — International Organization for Standardization
• R&D — Research & Development
• MOU — Memorandum of Understanding (an MOU between Food & Drug Administratin and a regulatory agency in another country allows mutual recognition of inspections)
• FAQ — Frequently Asked Questions (sometimes Pronounced Fak)
• CRT — Cathode Ray Tube (type of TV)
• RFP — Request For Proposal
• MTBF — Mean Time Before Failure
• P&SS — Planetary and Space Science
• WHO — World Health Organization
• ROM — Rough Order of Magnitude
• ASCII — American National Standard Code for Information Interchange
• CY — Calendar Year
• R&QA — Reliability & Quality Assurance
• PIFOV — Planet In Field Of View
• RF — Radio Frequency
• MRB — Material Review Board
• BTU — British Thermal Unit
• A&ARV — Astronomy and Astrophysics Review
• E&PSL — Earth and Planetary Science Letters
• AFAIK — As Far As I Know
• B-V — Binary - Variable star

• ASTM — American Society for Testing and Materials (Philadelphia, Pennsylvania)
• RPM — Revolutions Per Minute, (Rotations Per Minute)
• DEC — Digital Equipment Corporation
• O&M — Operation and Maintenance
• MRI — Magnetic Resonance Imaging
• EST — Eastern Standard Time
• PDR — Preliminary Design Review
• CDR — Critical Design Review
• TBD — To Be Determined
• MOA — Memorandum Of Agreement
• EU — European Union (1994; formerly referred to as the EEC or EC)
• JAAVSO — Journal of the American Association of Variable Star Observers
• QJRAS — Quarterly Journal of the Royal Astronomical Society
• FY — Fiscal Year
• ☿ — Mercury
• EEO — Equal Employment Opportunity
• WASOA — Washburn Observatory Astrophysics
• ZAND — Z ANDromedae
• M&PS — Meteoritics and Planetary Science
• GPS — Global Positioning System (ex-NAVSTAR)
• DAOAR — Dominion Astrophysical Observatory Annual Report
• DOD — United States Department of Defense
• AIAA — American Institute of Aeronautics and Astronautics, Inc.
• FYI — For Your Information
• SOW — Statement Of Work
• WWW — World Wide Web
• QA — Center for Quality Assurance in International Education
• EOF — End Of File
• BAICZ — Bulletin of the Astronomical Institutes of Czechoslovakia
• CV — Curriculum Vitae
• JASEG — Journal of the Astronomical Society of Egypt
• F&CRE — Flower and Cook Observatory Reprints
• MIS — Management Information System (OSHA)
• ADP — Automated Data Processing
• SAAOC — South African Astronomical Observatory Circular
• ZEPLIN — ZonEd Proportional scintillation in LIquid Noble gases
• XEUS — X-Ray Evolving Universe Spectroscopy Mission
• E-ELT — European Extremely Large Telescope
• JAPAS — Journal of Astrophysics and Astronomy Supplement
• CD — Compact Disc
• JALPO — Journal of the Association of Lunar & Planetary Observers
• ESA — European Space Agency
• P-E — Perkin-Elmer Corporation
• UFO — Unidentified Flying Object
• RAM — random-access memory
• VATOP — Vatican Observatory Publications
• AHRQ — Agency for Health, Research, and Quality
• NCCLS — National Committee for Clinical Laboratory Standards
• PALLO — Publications of the Allegheny Observatory of the University of Pittsburgh
• NSF — National Sanitation Foundation

• FDA — Food Drug Administration
• P/SOS — Payload/Spacecraft Operations Simulator
• FOV — Field Of View (satellite)
• CCB — Configuration Control Board
• CBO — Congressional Budget Office
• DOT — Department of Transport
• SADE-1 — Solar Array Deploy Electronics-11
• KG — Kilogram
• AMA — American Medical Association
• PABEI — Progress in Astronomy
• WAN — Wide Area Network
• AARP — American Association of Retired Persons
• GATT — General Agreement on Tariffs and Trade (government)
• LED — law enforcement desk; light emitting diode
• AA&AA — Astronomy and Astrophysics Abstracts Heidelberg
• HMO — Health Maintenance Organization
• CFR — Code of Federal Regulations
• SDD — Software Design Document
• CSA — Canadian Space Agency
• JAPOA — Japan Amateur Photoelectric Observers Association
• NM — Nanometer
• EAPSNET — East-Asian Planet Search Network
• DOE — United States Department of Energy (government)
• AHU — Air Handling Unit
• ROI — Return on Investment
• PPO — Preferred provider organization
• CM — Centimeter
• SAR — Search And Rescue
• FFT — Fast Fourier Transform
• LAMOST — Large sky Area Multi-Object fiber Spectroscopic Telescope
• PADEU — Publications of the Astronomy Deparment of the Eotvos Lorand University
• NHLBI — National Heart, Lung, and Blood Institute
• MADOB — Madras Observatory Observations
• MHZ — Megahertz (Megacycles Per Second)
• NFS — Network File System
• EOY — End-Of-Year
• HZ — cycles per second (hertz)
• LAD-C — Large Area Debris Collector
• OMB — Office of Management and Budget (U.S.)
• ROI — Region of Interest
• RPM — Resale Price Maintenance. The UK Net Book Agreement, as was. Means by which retail prices are controlled by primary suppliers. (Alternatively, Revolutions Per Minute, as in engine speed and 78, 33 and 45 records. In years to come how many people will know
• NIST — National Institute of Standards and Technology
• VHF — Very High Frequency
• PT — Physical Therapy
• CRS — Congressional Research Service
• SQA — Software Quality Assurance
• UTC — Coordinated Universal Time
• NAS — United States National Academy of Sciences
• BOD — Board of Directors (Budget)
• BPS — bits per second

• BTOK — Bulletin of the Tokyo Astronomical Observatory
• MB — Megabyte
• GMP — Good Manufacturing Practice
• PSI — Pounds Per Square Inch (Static Pressure)
• GMT — Greenwich Mean Time (Zulu)
• NIH — NATIONAL INSTITUTE OF HEALTH
• K — Kilo-
• HQ — Headquarters (HDQ Preferred)
• EDT — Eastern Daylight Time
• AAAS — American Association for the Advancement of Science
• HR — HUMAN RESOURCES
• DC — Direct Current
• UHF — Ultra High Frequency (300-3000 MHz; 1m-10cm)
• SCSI — Small Computer System Interface
• MPH — Miles Per Hour
• NEC — National Electrical Code
• USGS — United States Geological Survey (DOI)
• APU — Auxiliary Power Unit
• NOAA — National Oceanic and Atmospheric Administration (US)
• NAM — National Association of Manufacturers
• CRC — Contrôle de Redondance Cyclique (French: Cyclic Redundancy Check)
• IR — Infrared
• CASE — computer-automated software engineering
• OAI — Official Action Indicated (serious Food & Drug Administration post-inspection classification)
• OSHA — Occupational Safety and Health Act (1970)
• TLA — Three Letter Abbreviation
• CRO — Contract Research Organization
• M — Meter
• RISC — Reduced Instruction Set Computer
• COSPAR — Committee on Space Research (ICSU)
• GAO — Government Accountability Office [formerly the General Accounting Office]
• OS — Operating System
• NEMA — National Electric Manufacturer's Association
• FTC — Federal Trade Commission (U.S.)
• FORTRAN — FORmula TRANslation (a computer language)
• AAS — American Astronomical Society
• I/O — Input/Output
• PM — Project Manager
• STR — Software Test Report
• GIF — Graphic Interchange Format
• IFOV — Instantaneous Field Of View
• DDL — Data Definition Language
• DD — Deputy Director
• DBMS — Data Base Management System
• LOS — Line Of Sight
• KHZ — kilohertz (1000 cycles per second)
• LTE — Local Thermodynamic Equilibrium
• CKSM — checksum
• IIRC — If I Recall Correctly
• WMO — World Meteorological Organization (ICSU)

• UV — Ultraviolet (Light)
• DCC — Document Control Center
• FTE — Full-Time Employee
• AAMC — American Association of Medical Colleges
• HCFA — Health Care Financing Administration
• COTS — Commercial Off the Shelf Software
• HHS — Health and Human Services Department
• BER — Bit-Error Rate
• CM — Configuration Management
• POS — Point of Service Plan
• OPD — Outpatient Department
• RFI — Radio Frequency Interference
• DMSP — Defense Meteorological Satellite Program (U.S.)
• TV — Television
• FTA — Fault Tree Analysis
• CEN — Committee European de Normalisation
• JAXA — Japan Aerospace Exploration Agency
• DMA — direct memory access (computer term)
• RSN — Real Soon Now [which may be a long time coming]
• LEO — Low Earth Orbit (satellite communications)
• ROTFL — Roll On The Floor Laughing
• RMS — root mean square (preferred over "RMS")
• USAF — United States Air Force
• NIOSH — National Institute for Occupational Safety and Health
• AU — Astronomical Unit
• ISS — International Space Station
• EOL — End Of Line
• IEEE — Institute of Electrical and Electronic Engineers, Inc.
• CRF — Case Report Form
• LOE — Level Of Effort
• NIST — National Institute of Standards & Technology (US)
• CG — Center of Gravity (DXS)
• DME — Durable Medical Equipment
• COBRAS-SAMBA — Cosmic Background Radiation Anisotropy Satellite / Satellite for Measurement of Background Anisotrop
• NBS — National Bureau of Standards (US)
• HIV — Hair Is Vanishing. Amusing alternative interpretation (thanks EP) contrasting with the seriousness of the more usual meaning of Human Immunodeficiency Virus.HIVIHusband Is Village Idiot. (ODSA) Classic nurses' shorthand.
• LANL — Los Alamos National Laboratory
• NAFTA — North American Free Trade Agreement
• ELV — Expendable Launch Vehicle
• SNR — Signal-to-Noise Ratio
• AAMI — Association for the Advancement of Medical Instrumentation
• NSO — National Solar Observatory
• DOMSAT — Domestic Communications Satellite System
• GE — General Electric American Communications Inc.
• ADS — Astrophysics Data System
• VBR — Variable Bit Rate (ATM)
• BCD — Binary-Coded Decimal
• NRL — Naval Research Laboratory
• ANOLL — Annals of the Private Observatory of Lucien Libert
• CPI — Continuous Process Improvement

• STS — Space Transportation System
• CDRH — Center for Devices and Radiological Health (Food & Drug Administration)
• HTH — Hope This Helps. Email abbreviation when replying to requests. Potentially counter-productive if the recipient doesn't understand what it means...
• NSA — National Security Agency
• TANSTAAFL — There Ain't No Such Thing As A Free Lunch (coined By Author Robert A. Heinlein In His The Moon Is A Harsh Mistress)
• SISEX — Shuttle Imaging Spectrometer Experiment
• UPS — Uninterruptible Power Supply
• ARC — Ames Research Center (NASA)
• SF — Science Fiction
• DIST — Distance
• FAC — Facilities
• ADF — Astrophysics Data Facility
• GO — General Observer
• NASDA — National Space Development Agency of Japan
• SSI — Space Studies Institute
• IEC — International Electrotechnical Commission
• VLF — Very Low Frequency
• BNSC — British National Space Centre
• JPL — Jet Propulsion Laboratory (California Institute of Technology) (NASA)
• SIG — Special Interest Group
• IRB — Institutional Review Board
• AHA — American Hospital Association
• MS — Millisecond
• ADC — Analog-Digital Converter
• CPI — characters per inch
• A/N — Alphanumeric
• CCTV — Closed Circuit Television
• KM — Kilometer (1,000 meters)
• ISAS — Institute of Space and Astronautical Sciences (Japan)
• ACS — American College of Surgeons
• PCM — Pulse-Code Modulation
• BMA — British Medical Association
• AMU — Atomic Mass Unit
• HF — High Frequency
• ASQ — Alpha System Qualification
• ASM — American Society for Microbiology
• TAG — Technical Advisory Group for Biological Control Agents of Weeds
• AGU — American Geophysical Union
• PR — Public Relations
• HP — Hewlett Packard's
• CCD — Charge Coupled Device - a device for the movement of electrical charge.
• A&A — Astronomy and Astrophysics
• ACRIM — Active Cavity Radiometer Irradiance Monitor (EOS)
• LBNL — Lawrence Berkeley National Laboratory (US)
• CITECH — Center for Information on Technology in Healthcare
• MMS — Module Management System
• GHZ — Gigahertz
• NRC — National Response Center
• ABBOO — Abbadia Observatory Observations
• SIR — Shuttle Imaging Radar

• ASTHE — Astronomical Herald
• WG — Working Group
• CFA — Harvard-Smithsonian Center for Astrophysics, USA
• KB — Kilobyte: One thousand and twenty-four bytes kbps kilo bit per second
• JSC — Johnson Space Center (Houston, TX)
• ASI — Agenzia Spaziale Italiana
• RGOO — Royal Greenwich Observatory Observations
• OSO — Orbiting Solar Observatory
• APO — Apache Point Observatory
• RSA — Russian Space Agency
• HV — High Voltage
• EC — European Community
• AOCS — Attitude and Orbit Control System
• HOPPS — Hospital Outpatient Prospective Payment System
• DSN — Deep Space Network - network of large antennas and communication facilities.
• MIT — Massachusetts Institute of Technology (U.S.)
• AURA — Association of Universities for Research in Astronomy, Inc.
• BAE — British Aerospace Systems, LTD
• ETLA — Extended Three Letter Acronym
• RAS — Royal Astronomical Society
• AJ — Astronomical Journal
• NDA — New Drug Application
• CW — Clockwise
• SPR — Software Problem Report
• AAO — Anglo-Australian Observatory
• ISRO — Indian Space Research Organisation
• ACE — Advanced Composition Explorer
• COMSP — Commercial Space
• A&G — Astronomy and Geophysics
• DRS — Data Relay Satellite
• RADAR — RAdio Detection And Ranging
• AE — Adverse Event
• CASJ — Canadian Aeronautics and Space Journal
• CAP — College of American Pathologists
• NABR — National Association for Biomedical Research
• N — Newton
• NSSDC — National Space Science Data Center (Greenbelt, MD)
• NAI — No Action Indicated (Most Favorable Food & Drug Administration Post-inspection Classification)
• JAMA — Journal of the American Medical Association
• CSC — Collection of Small Companies. Alternative interpretation (apparently used by staff) of the CSC company name, which properly stands for Computer Sciences Corporation. The 'Collection of Small Companies' version reflects CSC's operatianal structure, which
• COBE — Cosmic Background Explorer Satellite (NASA)
• JILA — Joint Institute for Laboratory Astrophysics
• ADA&A — Advances in Astronomy and Astrophysics
• NASA — National Aeronautics and Space Administration (US)
• PHS — Public Health Service (U.S.)
• IAU — International Astronomical Union
• M&P — Materials and Processes
• ADC — Astronomical Data Center
• N — Nitrogen
• ESTEC — European Space Research and Technology Centre

• SARA — Society of Amateur Radio Astronomers
• USP — United States Pharmacopeia
• PAH — Polycyclic Aromatic Hydrocarbon
• APS — American Physical Society
• FTL — Faster Than Light
• SERC — Science and Engineering Research Council
• F — Degrees Fahrenheit
• ADS — Astrophysics Data Service
• CSTC — Consolidated Space Test Center
• AG — Astronomische Gesellschaft
• APJS — Astrophysical Journal Supplement Series
• ERBS — Earth Radiation Budget Satellite
• CHARA — Center for High Angular Resolution Astronomy
• GSFC — Goddard Space Flight Center (Greenbelt, MD)
• PPARC — Particle Physics and Astronomy Research Council
• CCAFS — Cape Canaveral Air Force Station, an air force base in Florida where NASA launches satellites from.
• MSFC — Marshall Space Flight Center (Huntsville AL)
• SAR — synthetic aperture radar (satellite)
• FAT — File Allocation Table
• CO — Contracting Officer
• SO/SI — space operations and scientific investigation
• LARC — Langley Research Center (NASA)
• MASER — microwave amplification by stimulated emission of radiation
• BPI — bits per inch
• BAA — British Astronomical Association
• IPAC — Infrared Processing and Analysis Center
• TARDIS — Time And Relative Dimensions In Space. Dr Who's company car, so to speak. I can confirm that it is 'Dimensions' not 'Dimension'. This begs the follow-up question as to whether the Dimensions are relative to each other or to time, or to both, or to somethi
• SN — Space Network
• ISF — Industrial Space Facility
• BAO — Beijing Astronomical Observatory
• LPL — Lunar and Planetary Laboratory
• NOAO — National Optical Astronomy Observatories (Tucson, AZ)
• ISO 14155 — Current Widely Accepted Standard
• BUBES — Bulletin of the University of Besancon Observatory
• MCC — Mission Control Center (JSC)
• ALPO — Association of Lunar and Planetary Observers
• CASS — Center for Advanced Space Studies
• DDCMP — Digital Data Communications Message Protocol
• RCS — Radar Cross Section
• VMS — Virtual Memory System
• ISO — Infrared Space Observatory
• D — Director
• BHB — Black Hole Bang
• RTG — Radioisotope Thermoelectric Generator
• ARC — Astrophysical Research Consortium
• ESO — European Southern Observatory
• DSMB — Data Safety Monitoring Board
• Z — Zulu (Greenwich mean time)
• MITI — Ministry of International Trade & Industry (Japan)
• COCAM — Contributions from the Cambridge Observatory England

• ADIL — Astronomy Data Image Library
• USRA — Universities Space Research Association
• STSCI — Space Telescope Science Institute
• SEDS — Students for the Exploration and Development of Space
• ASA — Astronomical Society Of The Atlantic
• KSC — John F. Kennedy Space Center
• TAC — Telescope Allocation Committee
• AAVSO — American Association of Variable Star Observers
• ID — IDentifier
• DAR — Defense Acquisition Regulation
• PHRMA — Pharmaceutical Research and Manufacturers of America (formerly PMA, Pharmaceutical Manufacturers Association)
• DOH — Department of Health (various countries)
• FOS — Faint Object Spectrograph
• AOA — Angle Of Attack
• VSOP — VLBI Space Observatory Program
• MECO — Main Engine Cutoff
• DSCS — U.S. Defense Satellite Communications System
• NASP — National Aerospace Plane
• CARA — Center for Astrophysical Research in Antarctica
• USNO — United States Naval Observatory
• VLSI — Very-Large-Scale Integration
• APL — Applied Physics Laboratory (at Johns Hopkins)
• CSA — Canadian Standards Association (like UL)
• R/T — Real Time
• S/W — Software
• WET — Whole Earth Telescope
• CHSAJ — Chinese Society of Astronautics Journal
• PHP — Planetary Horizontal Platform
• PROM — Programmable Read-Only Memory
• ADSPR — Advances in Space Research
• FWHM — Full Width at Half Maximum
• CEMDA — Celestial Mechanics and Dynamical Astronomy
• WGPSN — Working Group for Planetary System Nomenclature
• AMS — American Meteor Society
• ISU — International Space University
• EUVE — Extreme Ultraviolet Explorer (NASA Satellite)
• UCL — University College London
• ADCBU — Astronomical Data Center Bulletin
• GCP — Good Clinical Practice
• ADIS — Astrophysics Data and Information Services
• ORIG — Origin
• INS — Inertial Navigation System
• ADEC — Astrophysics Data Centers Executive Council
• RVU — Relative Value Unit
• AMPS — Atmospheric Magnetospheric Plasma System
• DAO — Dominion Astrophysical Observatory (Victoria, BC, Canada)
• SME — Solar Mesosphere Explorer
• GOES — Geostationary Operational Environmental Satellite
• CADC — Canadian Astronomy Data Centre
• NEODYS — Near Earth Objects Dynamic Site

• LHEA — Laboratory for High Energy Astrophysics
• K — Kilogram
• LOX — Liquid Oxygen
• ATO — Abort To Orbit
• AGB — Asymptotic Giant Branch
• EUV — Extreme Ultraviolet Vertical
• ALAMO — Automated Lunar and Meteor Observatory
• SAS — Small Astronomy Satellite
• GLP — Good Laboratory Practice
• IPC — Interprocess Communication
• XRD — X-Ray Diffraction
• EIA — Extended Interaction Amplifier
• AXAF — Advanced X-Ray Astrophysics Facility
• ALEXIS — Array of Low Energy X-ray Imaging Sensors
• CARA — California Association for Research in Astronomy
• BASBR — Bulletin of the Astronomical Society of Brazil
• SGF — SpaceGuard Foundation
• CHSST — Chinese Space Science Technology
• IRSA — Infrared Science Archive
• ANS — Astro News Service
• NAOJ — National Astronomical Observatory of Japan
• SLAR — Side-Looking Airborne Radar
• VDS — Vereinigung der Sternfreunde
• K — Kelvin (absolute temperature scale)
• LCC — Launch Control Center (KSC)
• SDR — System Design Review
• EPS — Encapsulated Postscript
• WP — Work Package
• IOTA — International Occultation Timing Association
• ALS — Advanced Launch System
• COWRO — Contributions from the Wroclaw Astronomical Observatory
• RASC — Royal Astronomical Society of Canada
• LOR — Lunar Orbit Rendezvous
• DUNRE — Dunsink Observatory Reprints
• LPO — La Palma Observatory
• ASCA — Advanced Satellite for Cosmology & Astrophysics
• MMI — Man-Machine Interface
• VSOLJ — Variable Star Observers League in Japan
• NORAD — North American Air Defense (Command)
• JAC — Joint Astronomy Centre
• CDM — Cold Dark Matter
• NCI — National Cancer Institute, USA
• EDO — Extended Duration Orbiter
• CHJAA — Chinese Journal of Astronomy and Astrophysics
• AZ — Azimuth
• NEOIC — Near Earth Object Information Center
• ISN — International Supernovae Network
• ERS — Earth Resources Satellite
• OIG — Office of Inspector General
• LSF — Line Spread Function

• RECONS — Research Consortium on Nearby Stars
• AUASS — Arab Union for Astronomy and Space Sciences
• DOY — Day of Year
• CHJSS — Chinese Journal of Space Science
• IDE — Investigational Device Exemption
• DEC — Declination
• ABHI — Association of British Health-Care Industries
• TIFF — Tag Image File Format
• MSSS — Maui Space Surveillance Site
• AIRCO — Air et Cosmos
• SAAO — South African Astronomical Observatory
• NAMN — North American Meteor Network
• ESRO — European Space Research Organisation
• FITS — Flexible Image Transport System
• MOSPO — Mobile Satellite Photometric Observatory
• CSBN — Committee for Small-Body Nomenclature
• NRAO — National Radio Astronomy Observatory (Greenbank, WV)
• SIDC — Sunspot Index Data Center
• OSS — Office of Space Sciences
• ISTEC — International Small Telescope Cooperative
• DIN — Deutsches Institut für Normung.
• DYERE — Dyer Observatory Reprints
• LPI — Lunar and Planetary Institute
• SBNC — Small Bodies Names Committee
• ONR — Office of Naval Research (U.S.)
• LOI — Lunar Orbit Insertion
• SVD — Singular Value Decomposition
• NAS — Norsk Astronomisk Selskap
• ASTRA — Advanced Star Tracker
• TEP — Transits of Extrasolar Planets
• ROSAT — Roentgen Satellite
• EVA — Extra-Vehicular Activity
• MSSSO — Mount Stromlo and Siding Spring Observatories
• CMS — Correctional Medical Services
• ASHP — American Society of Hospital Pharmacists
• BASD — Ball Aerospace Systems Division
• ND — NASA Document
• DEACO — Dearborn Observatory Contributions
• BLOB — Binary Large Object
• ASC — Ambulatory Surgery Center
• CDC — Centers for Disease Control
• SIM — Simulator
• EVN — European VLBI Network
• TIE — Telescopes in Education
• OSSE — Oriented Scintillation Spectrometer Experiment
• HCIS — Health Care Information System
• MEPAG — Mars Exploration Program Analysis Group
• ESAJ — European Space Agency Journal
• CPAF — Cost Plus Award Fee (Type of Contract)
• BAT — Burst Alert Telescope

• FU — Flight Unit
• KPNO — Kitt Peak National Observatory (Tucson, AZ)
• PDP — Postinsertion Deorbit Preparation
• WEBT — Whole Earth Blazar Telescope
• TDRSS — Tracking and Data Relay Satellite System
• HST — Hubble Space Telescope
• RGO — Royal Greenwich Observatory
• OPAG — Outer Planets Assessment Group
• VBO — Vainu Bappu Observatory
• DFRC — Dryden Flight Research Center
• COROE — Communications from the Royal Observatory Edinburgh
• JSAR — Journal of Space Astronomy Research
• APHA — American Pharmaceutical Association
• GR — General Relativity
• KCAO — Kumamoto Civil Astronomical Observatory
• JHIT — Joint Healthcare Information Technology Alliance
• DUNOP — Dunsink Observatory Publications
• WAIS — Wide Area Information Server
• MTPE — Mission To Planet Earth
• NCAR — National Center for Atmospheric Research (US)
• IUEDAC — IUE satellite Data Analysis Center
• ACICH — Astronomical Circular
• VVORE — Van Vleck Observatory Reprints
• TAC — Time Allocation Committee
• DMERC — Durable Medical Equipment Regional Carrier
• MGMA — Medical Group Management Association
• COLPL — Communications of the Lunar and Planetary Laboratory
• CMP — Competitive Medical Plan
• NESSI — Near Earth Space Surveillance Initiative
• CHIME — College of Healthcare Information Management Executives
• ASP — Astronomical Society of the Pacific
• GHTF — Global Harmonization Task Force
• BSI — British Standards Institution
• ORROE — Occasional Reports of the Royal Observatory, Edinburgh
• UT — Universal Time
• AFSCN — Air Force Space Command network
• ARMOL — Armagh Observatory Leaflet
• HEAO — High Energy Astronomy Observatory
• ADEPS — Advances in Earth and Planetary Sciences
• JRASC — Journal of the Royal Astronomical Society of Canada
• ASPP — Atmospheric and Space Plasma Physics
• FHST — fixed-head star tracker
• CRB — Change Review Board
• APH — Astroparticle Physics
• SRD — Software Requirements Document
• AEXPR — Astronomy Express
• LMSS — Lunar Mapping and Survey System
• D — Diameter
• TOMS — Total Ozone Mapping Spectrometer (satellite Instrument)
• ANEDI — Annals of the Royal Observatory, Edinburgh

• EAA — Encyclopedia of Astronomy and Astrophysics
• SST — States Supersonic Transport
• FRR — Flight Readiness Review
• FAR — Flight Acceptance Review
• IUE — International Ultraviolet Explorer
• ARISTOTELES — Applications and Research Involving Space Technologies Observing the Earth's Field from Low Earth Orbiting Satellite
• AT — Acceptance Test
• BAAS — Bulletin of the American Astronomical Society
• APJ — Astrophysical Journal
• IDL — Interactive Data Language
• BIO — Biotechnology Industry Organization
• EOS — Earth Observing System (U.S.)
• SDI — Strategic Defense Initiative
• PDR — Physician’s Desk Reference
• CHIPS — Cosmic Hot Interstellar Plasma Spectrometer
• SAO — Smithsonian Astrophysical Observatory
• VDU — Video Display Unit
• MMU — Manned Maneuvering Unit
• AMIA — The American Medical Informatics Association
• CDT — Connaissance Des Temps
• E&S — Earth and Space
• AREPS — Annual Review of Earth and Planetary Sciences
• QSR — Quality System Regulation
• IDTF — Independent Diagnostic Testing Facility
• HIAA — Health Insurance Association of America
• PDUFA — Prescription Drug User Fee Act (1992, U.S.)
• PAAS — Publications of the American Astronomical Society
• DUROO — Durham Observatory Observations
• AREG — Astronomical Register
• SRON — Space Research Organization of the Netherlands
• JEM — Japanese Experiment Module
• ANHAR — Annals of Harvard College Observatory
• ST — Space Telescope
• CLMA — Clinical Laboratory Management Association
• ANLOW — Annals of the Lowell Observatory
• PASAU — Proceedings of the Astronomical Society of Australia
• ECRI — Emergency Care Research Institute
• SPVW — Spaceview
• SUNY — State Universityrsity of New York
• AFSD — Air Force Space Division
• AREP — Astronomy Reports
• NIR — Near Infrared
• IUS — Inertial UPper Stage (was Interim UPper Stage)
• ASRM — Advanced Solid Rocket Motor
• CMA — Chemical Manufacturers Association
• PASA — Publications of the Astronomical Society of Australia
• ANCAP — Annals of the Cape Observatory
• IRAS — Infrared Astronomy Satellite
• OTA — Optical Telescope Assembly
• FSK — Frequency Shift Keying

• DFRF — Dryden Flight Research Facility
• CQGRS — Classical and Quantum Gravity Supplement
• NCC — Network Control Center (GSFC)
• MOA — Microlensing Observations in Astrophysics
• DADS — Data Archive and Distribution System
• CTE — Charge Transfer Efficiency
• TM — Telemetry
• ANLUN — Annals of the Observatory of Lund
• JBAA — Journal of the British Astronomical Association
• JOP — Jupiter Orbiter Probe
• ASPRV — Astrophysics and Space Physics Reviews
• ASTL — Astronomy Letters
• BBF — Bursty Bulk Flow
• ONRAS — Occasional Notes of the Royal Astronomical Society
• MNRAS — Monthly Notices of the Royal Astronomical Society
• UL — Underwriters Laboratory
• PMUNO — Publications of the Munich Observatory
• ALPOJ — Association of Lunar and Planetary Observers Journal
• ANDUD — Annals of the Dudley Observatory
• VAI — Voluntary Action Indicated (Food & Drug Administration postaudit inspection classification)
• MWOAR — Mount Wilson Observatory Annual Report
• RTLS — Return To Launch Site
• SUMS — Shuttle Upper Atmosphere Mass Spectrometer
• AO — Adaptive Optics
• IPA — Individual Practice Association
• ESDAC — European Space Data Center
• MMDA — Michigan Medical Device Association
• SI — Scientific Investigation
• PROE — Publications of the Royal Observatory of Edinburgh
• JANSC — Journal of Astronautical Sciences
• ISY — International Space Year (1992)
• MELOO — Melbourne Observatory Observations
• SSBUV — shuttle solar backscatter ultraviolet (radiometer)
• ATLAS — ACTIVITIES Atmospheric Laboratory for Applications and Science
• BKOAS — Bulletin of Korean Astronomical Society
• ESOAR — European Southern Observatory Annual Reports
• AFGWC — Air Force Global Weather Central (U.S.)
• CRPL — Cosmic Ray Physics Laboratory
• OBC — Onboard Computer
• SDIO — Strategic Defense Initiative Organization
• CEMEC — Celestial Mechanics
• CIBAA — Circular of the British Astronomical Association
• CASJQ — Canadian Aeronautics and Space Journal Quarter
• FDLI — Food and Drug Law Institute
• SSTO — Single-Stage-to-Orbit
• MECO — Magnetospheric Eternally Collapsing Object
• ASMT — American Society for Medical Technology
• COBRN — Contributions of the Public Observatory and Planetarium in Brno
• OPF — Orbiter Processing Facility
• PHASP — Physics and Astrophysics from Spacelab

• JASS — Journal of Astronomy and Space Sciences
• ICH — International Conference of Harmonization
• ESOSR — European Southern Observatory Scientific Report
• MCD — Minimum Cost Design
• PAM — Payload Assist Module
• RA — Research Assistant
• PRAES — Progress in Aerospace Sciences
• COVVO — Contributions of the Van Vleck Observatory
• NRT — near real time
• CME — Coronal Mass Ejection (usually Sun)
• NASAR — NASA Reference Publication
• MDD — Medical Device Directive
• PASJ — Publications of the Astronomical Society of Japan
• CQGRA — Classical and Quantum Gravity
• EBCI — Eclipsing Binaries Circulars
• NASAL — NASA Circular Letter
• COSTAR — Corrective Optics Space Telescope Axial Replacement
• SCA — Shuttle Carrier Aircraft
• JBAS — Journal of the British Astronomical Society
• PNAOJ — Publications of the National Astronomical Observatory of Japan
• NCOS — National Commission on Space
• JDSO — Journal of Double Star Observations
• MEM — Meteoroid Exposure Module
• MMH — Monomethyl Hydrazine
• CIT — California Institute of Technology (Pasadena, CA)
• PHA — Physics And Astronomy
• S/N — Signal-to-Noise ratio
• COARM — Contributions from the Armagh Observatory
• TTA — Time to Apogee
• PDS — Planetary Data System
• COKON — Commmunications of the Konkoly Observatory Hungary
• AO — announcement of opportunity
• DRG — Diagnosis-Related Groups
• CBER — Center for Biologics Evaluation and Research
• STOMS — Space Telescope Observatory Management System
• HRSA — U.S. Health Resources and Services Administration
• NASAS — NASA Special Publication
• ICE — International Cometary Explorer
• ANDEA — Annales of the Dearborn Observatory
• USNOR — United States Naval Observatory Reports
• NASM — National Air and Space Museum
• GSC — Guide Star Catalog
• STICA — Space Technology Industrial and Commercial Applications
• ESRIN — European Space Research Institute
• BASI — Bulletin of the Astronomical Society of India
• ANMN — Antarctic Meteorite Newsletter
• SPMAR — Space Markets
• ARA&A — Annual Review of Astronomy and Astrophysics
• JKAS — Journal of Korean Astronomical Society
• NMI — Nautical Mile

• DSS — Deep Space Station
• JAHH — Journal of Astronomical History and Heritage
• CHA&A — Chinese Astronomy and Astrophysics
• AMPS — Atmosphere, Magnetosphere & Plasmas in Space
• OCC — Operations control center
• PPCAS — Publication of the Pomona College Astronomical Society
• RFNA — Red Fuming Nitric Acid
• IU — Interface Unit
• MERIS — Medium Resolution Imaging Spectrometer
• TIROS — Television InfraRed Observation Satellite (POES)
• EBS — Electron Bombarded Silicon
• IQSY — International Quiet Sun Year
• ESOSP — European Southern Observatory Scientific Preprints
• COSKA — Contributions of the Astronomical Observatory Skalnate Pleso
• S&T — Sky & Telescope
• NIZRE — Nizamiah Observatory Reprints
• ARCHS — Archaeoastronomy Supplement
• BPSK — binary phase shift keying
• PVVO — Publications of the Van Vleck Observatory
• PRCO — Publications of the Riverview College Observatory
• TPS — Thermal Protection System
• TEM — Transverse Electromagnetic
• ASTD — Advanced Space Technology Division
• OSSA — Office of Space Sciences and Applications
• M&R — Maintenance and Refurbishment
• POEM — Polar-Orbiting Earth Mission
• COBOS — Contributions from the Bosscha Observervatory
• PGLO — Publications of the Goethe Link Observatory
• COLIC — Contributions of Lick Observatory
• NASAC — NASA Conference Publication
• CODDO — Communications from the David Dunlap Observatory
• PDDO — Publications of the David Dunlap Observatory
• TUV — Technische Uberwachungs-Vereine
• MFPE — Mission from Planet Earth
• CIUO — Circular of the Union Observatory Johannesburg
• PDREO — Publications of the Dresden Observatory
• MOL — Manned Orbiting Laboratory
• CEC — Commission of the European Communities ;
• OASH — Office of the Assistant Secretary for Health
• OVS — Observation of Variable Stars
• JAD — Journal of Astronomical Data
• SMDA — Safe Medical Devices Act (1990)
• IRAJ — Irish Astronomical Journal
• HRI — High Resolution Imager
• MIL-STD — Military Standard
• AUJPA — Australian Journal of Physics Astrophysical Supplement
• PCINO — Publications of the Cincinnati Observatory
• UARS — Upper Atmosphere Research Satellite (NASA)
• POMIC — Publications of Michigan Observatory
• DSSN — Delta Scuti Star Newsletter

• AACC — American Association for Clinical Chemists
• FAHS — Federation of American Health Systems
• ESOC — European Space Operations Center
• JHA — Journal for the History of Astronomy
• JCAP — Journal of Cosmology and Astro-Particle Physics
• SPART — Space Research and Technology
• CCR — Cost-Charge Ratio
• EXA — Experimental Astronomy
• AACCS — Analytical Approach to Candidate Constellation Selection
• LICOB — Lick Observatory Bulletin
• PLICO — Publications of Lick Observatory
• PBEIO — Publications of the Beijing Astronomical Observatory
• NSI — NASA Science Internet
• SPRBU — Space Research Bulgaria
• ATV — Automated Transfer Vehicle
• COMAP — Comments on Astrophysics
• GMT — Giant Magellan Telescope
• CFC — Chloroflourocarbon
• SPP — Solar Physics Payload
• MDR — Medical Device Register
• LPS — Launch Processing System
• LASCO — Large Angle Spectrometric Coronograph
• WRORE — Wroclaw Astronomical Observatory Reprints
• LEGRI — Low Energy Gamma-Ray Imager
• CON — Certificate Of Need
• SEOS — Synchronous Earth Observation Satellite
• DUDOR — Dudley Observatory Reports
• PEPI — Physics of the Earth and Planetary Interiors
• AOA — Abort Once Around (shuttle Abort Plan)
• SLC — Space Launch Complex
• RALPH — Reduction and Acquisition of Lunar Pulse Heights
• MHW — Ministry of Health and Welfare
• ADVAMED — Advanced Medical Technology Association
• PMANO — Publications of the Manila Observatory
• BBXRT — Broadband XRay Telescope
• SZA — Solar Zenith Angle
• LRB — Liquid Rocket Booster
• S/C — Spacecraft
• COSRE — Cosmic Research
• MMA — Minnesota Medical Association
• COSSE — Cosmic Search Summer
• HIRA — Health Industry Representatives Association
• FIRSSE — Far Infrared Sky Survey Experiment
• ECS — Environmental Control System (Subsystem)
• CD-ROM — compact disc-read only memory
• FM — Flight Model
• LBLRR — LBL Research Review
• CAMRE — Cambridge Observatories Reprints
• LGA — Low Gain Antenna
• NIGMS — National Institute Of General Medical Sciences (NIH)

• SPOT — Satellite Pour l'Observation de la Terre (France)
• INDA — Investigational New Drug Application
• ACMAN — Astronomical Contributions from the University of Manchester
• NRAOR — National Radio Astronomy Observatory Reprints
• FCPH — Fundamentals of Cosmic Physics
• GEO — Geosynchronous Earth Orbit
• PA — Popular Astronomy
• CRARE — Cracow Observatory Reprints
• ASSU — Annual Scientific Supplement to Urania
• HD — Hilary Duff
• PI — Principle Investigator
• JGR — Journal of Geophysical Research
• RNAOJ — Report of the National Astronomical Observatory of Japan
• DSP — Defense Support Program
• NCSC — National Council of Senior Citizens
• SAA — South Atlantic Anomaly
• PSK — Phase Shift Key
• MJD — Modified Julian Date
• UPPAN — Uppsala Astronomical Observatory Annals
• NRO — U.S. National Reconnaissance Office
• MELAR — Melbourne Observatory Annual Report
• TOKRE — Tokyo Astronomical Observatory Reprints
• RSNA — The Radiological Society of North America, Inc.
• RAA — Relative Azimuth Angle
• PSPRO — Publications of the Sproul Observatory
• ACRV — Assured Crew Return Vehicle
• CCAS — Cape Canaveral Air Station
• ECCLS — European Committee on Clinical Laboratory Standards
• HIS — Health Information Systems
• BCRAO — Bulletin Crimean Astrophysical Observatory
• CDSF — Commercially Developed Space Facility
• SPIE — The Society of Photo-optical Instrumentation Engineers
• JASAC — Japan Astronomical Study Association Circulars
• SPED — Space Education
• PLAST — Planetary Astronomy
• JHAS — Journal for the History of Astronomy Supplement
• FS — Far Side
• MDI — Michelson Doppler Imager
• ISEE — International Sun-Earth Explorer
• FIR — Far Infrared
• CV — Cataclysmic Variable
• CM — Command Module
• ANS — Astronomical Netherlands Satellite
• SRL — Space Radar Laboratory
• NAHIT — National Alliance for Health Information Technology
• QBO — Quasi-biennial Oscillation (atm.)
• DCT — Discrete Cosine Transformer
• DSMA — Division of Small Manufacturers Assistance
• STERE — Steward Observatory Reprints
• ETR — Eastern Test Range (ESME Preferred)

• MDMA — Medical Device Manufacturers Association
• SRM — Solid Rocket Motor
• RSO — Resident Space Object
• APJL — Astrophysical Journal Letters
• FF — Flat Field
• RAD — Radiant
• DOAMS — distant-object attitude-measuring system
• COPER — Contributions of Perkins Observatory
• VAB — Vertical Assembly Building
• HIDA — Health Industry Distributors Association
• PERCO — Perkins Observatory Contributions
• SDSS — Sloan Digital Sky Survey
• CFIT — Controlled Flight into Terrain
• WFF — Wallops Flight Facility
• COASP — Comments on Astrophysics and Space Physics
• APOD — Astronomy Picture of the Day
• ASCRS — American Society of Cataract and Refractive Surgery's
• OAP — Odessa Astronomical Publications
• PROPAC — Prospective Payment Assessment Commission
• M&P — Moon and Planets
• MEI — Medical Economic Index
• PV — photovoltaic (solar)
• ICD-9-CM — International Classification of Diseases, 9th Edition
• JBAN — Jodrell Bank Annals
• EEXSC — Earth and Extraterrestrial Sciences
• SYDOP — Sydney Observatory Papers
• SERAJ — Serbian Astronomical Journal
• MEDEC — Medical Devices Canada
• RA — Regulatory Affairs
• MSX — Midcourse Space Experiment
• SUSIM — Solar Ultraviolet Spectral Irradiance Monitor
• SPRRE — Sproul Observatory Reprints
• MOPH — Ministry of Public Health
• LR — Long Radius
• JET-X — Joint European Telescope for X-ray astronomy
• NEWAR — New Astronomy Review
• JBRE — Jodrell Bank Reprints
• MASSMEDIC — Massachusetts Medical Device Industry Council
• D — Directive
• PWASO — Publications of the Washburn Observatory
• RA — Right Ascension
• GRO — Gamma Ray Observatory (NASA)
• LSR — Local Standard of Rest
• CHPA — Consumer Healthcare Products Association
• SR — Special Relativity
• USPHS — United States Public Health Service
• HFMA — Healthcare Financial Management Association
• JASV — Journal of the Astronomical Society of Victoria Melbourne
• OTV — Orbital Transfer Vehicle
• CPFF — Cost Plus Fixed-Fee

• ELT — Extremely Large Telescope
• IRAJS — Irish Astronomical Journal Supplement
• JIMO — Journal of the International Meteor Organization
• WIMP — Weakly Interacting Massive Particle
• PR — Problem Report
• PRO — Professional Review Organization
• OHTA — Office of Health Technology Assessment
• LAMO — low altitude mapping orbit
• PYUNO — Publications of the Yunnan Observatory
• NASPY — North American Society of Electro Physiology and Pacing
• USNOC — United States Naval Observatory Circulars
• MOS — Metal Oxide Semiconductor (FET Devices)
• MSFN — Manned Space Flight Network
• PPRC — Physician Payment Review Commission
• EFPIA — European Federation of Pharmaceutical Industries and Associations
• PYERO — Publications of the Yerkes Observatory
• IUENN — IUE NASA Newsletter
• MOTIF — Maui Optical Tracking and Identification Facility
• OSCAR — Orbiting Satellite Carrying Amateur Radio
• ESPI — European Space Policy Institute
• SOLSTICE — Solar Stellar Irradiance Comparison Experiment
• B/W — Black and White
• ASCP — American Society for Clinical Pharmacology and Therapeutics
• ASH — American Society of Hematology's
• HIMSS — Healthcare Information and Management Systems Society
• SOPH — Solar Physics
• APC — Ambulatory Payment Class
• AMANDA — Antarctic Muon And Neutrino Detector Array
• LBT — Large Binocular Telescope
• SETI — Search for Extraterrestrial Intelligence
• FD — Flight Day
• WILOO — Williamstown Observatory Observations
• MEDGV — Germany's Medical Equipment Safety Law
• IAPM — International Association of Medical Prosthesis Manufacturers
• JAAME — Japanese Association for the Advancement of Medical Equipment
• CMB — Cosmic Microwave Background
• MTF — Modulation transfer function.
• SPAC — State Pharmaceutical Administration of China
• GLOMR — Global Low-Orbiting Message Relay
• SRB — Solid Rocket Boosters
• VHT — Very High Temperature
• STSKY — Star Sky
• CHI — California Healthcare Institute
• PMT — Photo Multiplier Tube
• TTP — Time to Perigee
• PVASO — Publications of the Vassar College Observatory
• KODOB — Kodaikanal Observatory Bulletins
• UPPOR — Uppsala Astronomical Observatory Reports
• IUEEN — IUE ESA Newsletter
• SOT — Solar Optical Telescope

• ST — Star Tracker
• HSQB — Health Standard and Quality Bureau
• SPD — Solar Physics Division
• ASAIO — American Society for Artificial Internal Organs
• AW&ST — Aviation Week & Space Technology
• UVS — Ultraviolet Spectrometer
• SF — Square Foot
• UCLA — Harbor-University of California Los Angeles
• LLO — Low Lunar Orbit
• IGY — International Geophysical Year (1 July 1957 - 31 December 1958)
• MDS — Medium Deep Survey
• TDRS — Tracking and Data Relay Satellites
• SPWD — Space World
• IPEM — Institute of Physics and Engineering in Medicine
• JAPA — Journal of Astrophysics and Astronomy
• SPAN — Space Physics Analysis Network
• CSG — Council of State Governments
• TECRV — Technology Review
• PAB — Pharmaceutical Affairs Bureau (Japan)
• ROAN — Royal Observatory Annals
• EU — Expanded Universe
• EUV — Extreme Ultra-Violet 2
• DEED — Minnesota Department of Employment and Economic Development
• MAFI — Medical Alert Foundation International
• EPIC — Earth Polychromatic Imaging Camera
• MOSS — Market-Oriented Sector Selective
• GEM — Giotto Extended Mission
• VLA — Very Large Array
• GRS — Gamma Ray Spectrometer
• JETRO — Japan External Trade Organization
• LRSP — Living Reviews in Solar Physics
• TOKAB — Tokyo Astronomical Bulletin
• JCCT — Joint Commission on Commerce and Trade (US-China)
• AIPS — Astronomical Image Processing System
• EGRET — Energetic Gamma Ray Explorer Telescope
• STMAP — Studies in Mathematical Physics
• NAG — Numerical Algorithms Group Inc.
• ETC — Estimated Time to Completion
• MPBU — Minor Planet Bulletin
• CM/QA — Configuration Management/Quality Assurance
• LLC — Limited Liability Partnership
• BATSE — Burst and Transient Source Experiment
• HIB — Health Insurance Bureau (Japan)
• WMAP — Wilkinson Microwave Anisotropy Probe
• CDS — Coronal Diagnostic Spectrometer
• WR — Western Range
• CNB — Cosmic Neutrino Background
• HIBCC — Health Industry Business Communications Council
• ER — Eastern Range
• T&E — Test and Evaluation

• WHT — William Herschel Telescope
• TNO — Trans-Neptunian Object
• OEJV — Open European Journal on Variable Stars
• MTI — Minnesota Technology Inc
• DNA — Digital Network Architecture
• JCAHO — Joint Committee on the Accreditation of Healthcare Organizations
• ORA — FDA's Office of Regulatory Affairs
• NHIB — National Health Insurance Bureau (Taiwan)
• RVGSP — Reviews of Geophysics and Space Physics
• INTEGRAL — International Gamma-Ray Astrophysics Laboratory
• SIMCAT — simulate observations using space catalog
• MDA — Medical Device Amendments
• IOA — Institute Of Astronomy (Cambridge)
• DIN — Deutsches Institut fur Normung
• RTV — Room Temperature Vulcanizer
• LRO — Lunar Reconnaissance Orbiter
• LAC — Lockheed Aircraft Corporation
• QSIT — Quality System Inspection Technique
• IES — Institute of Environmental Sciences
• TIMED — Thermosphere Ionosphere Mesosphere Energetics and Dynamics
• IMDA — Independent Medical Distributors Association
• ZAHB — Zero-Age Horizontal Branch
• QSO — Quasar|Quasi-Stellar Object
• RAZEL — Range, Azimuth and Elevation
• RGOB — Royal Greenwich Observatory Bulletin
• ISTAHC — International Society of Technology Assessment in Health Care
• SSID1 — Soviet Space Insertion Diverter One
• NAMES — National Association of Medical Equipment Services
• MIAA — Medical Industry Association of Australia
• PT — Pass-Through
• SNR — Super Nova Remnant
• RTK — Right-To-Know
• AMDM — Association of Medical Diagnostics Manufacturers
• LDEF — Long Duration Exposure Facility (for Spacecraft Material Testing)
• ASIM — American Society of International Medicine
• SEB — Systems Engineering Branch
• CBI — Confederation of British Industries
• JFMDA — Japan Federation of Medical Device Associations
• HAACP — Hazard Analysis Critical Control Points Program
• NMDC — National Medical Device Coalition
• MTPPI — Medical Technology and Practice Patterns Institute
• BH — Black Hole
• TES — Thermal Emission Spectrometer
• CENELEC — European Committee for Electromechanical Standardisation
• SSDF — Space Science Development Facility
• LHA — Local Hour Angle
• EUDRA — European Drug Regulatory Authorities Network
• FIPS — Fast Imaging Plasma Spectrometer
• EFCS — Earth-fixed coordinate system
• CIRRIS — Cryogenic Infrared Radiance Instrument for Shuttle

• STHCG — Studies in High Energy Physics Cosmology and Gravitation
• HPB — Health Protection Board (Canada)
• TNM — The New Millenium
• SSME — Space Shuttle Main Engine
• WAXS — Wide Angle X-ray Scattering
• HUT — Hopkins Ultraviolet Telescope
• RQQ — Radio Quiet Quasar
• PDA — Parenteral Drug Association
• HTML — Hyptertext Markup Language
• PSLV — Polar Satellite Launch Vehicle (Indian Space Research Organization; India)
• Z — Zenith
• CM — Center of Mass
• SAPS — Sub Auroral Polarization Streams
• PACS — Physics and Astronomy Classification Schemex
• MACHO — Massive Compact Halo Object
• MPEC — Minor Planet Electronic Circular
• NLN — National League for Nursing
• NSP — NASA Support Plan
• LIGO — Laser Interferometer Gravitational-Wave Observatory
• DC — Delta Clipper
• FDAMA — FDA Modernization Act of 1997
• BEV — Billion Electron Volts
• MODIS — Moderate Resolution Imaging Spectroradiometer
• ATM — Apollo Telescope Mount (on Skylab)
• WFC — Wide-Field Camera
• B/L — Baseline
• GLOB — Globular
• POMIN — Publications of the Astronomical Observatory University of Minnesota
• SNII — SuperNova of Type II
• MBBNET — Minnesota Biomedical Business Network
• ESS — Engineering Support System
• HGA — High Gain Antennae
• SIP — Sickness Index Profile
• LM — Lunar Module
• IOLM — International Organization of Legal Metrology
• DEFCAL — deflection calibration
• VDC — Volts, Direct Current
• AIMBE — American Insitute for Medical and Biological Engineering
• QE — Quantum Efficiency
• PERI — Pharmaceutical Education & Research Institute
• MDDI — Medical Device and Diagnostics Industry
• PSF — Point Spread Function
• ECSS — European Cooperation for Space Standardization
• WSMR — White Sands Missile Range (whiz-murr)
• CST — Constant-Separation Traversing
• IPNS — Intense Pulsed Neutron Source
• LS/ST — Light Shield/Star Tracker
• EMDM — European Medical Device Manufacturer
• UADE — Unanticipated Adverse Device Effects
• LAMMR — large-antenna multichannel microwave radiometer

• ERF — Energy Rejection Filter
• SSGSR — Springer Verlag Springer Series on Group Geophysics Space Research
• MOTIE — Ministry of Trade, Industry, and Energy (Korea)
• UHMW — Ultra High Molecular Weight
• MEDSUN — Medical Device Surveillance Network
• COCIR — Coordination Committee of the Radiological and Electromedical Industries
• IFCC — International Federation of Clinical Chemists
• NOCC — Network Operations Control Center (GSFC)
• GML — Galactic Modeling Language
• MEDMARC — Medical Device Material Assurance and Reinsurance Company, Ltd.
• ESABU — European Space Agency Bulletin
• PPQA — Pre-Product Quality Assurance
• FPA — Floating Point Accelerator
• EBTC — Edison BioTechnology Center
• MITTS — Mobile Igor Tracking Telescope System
• LAPSS — Large-Area Pulse Solar Simulator
• D/A — Digital-to-Analog
• GOES — Geostationary Orbiting Environmental Satellite
• VAC — Volts, Alternating Current
• RAPS — Regulatory Affairs Professional Society
• GHRS — Goddard High Resolution Spectrograph
• BCS — Bragg Crystal Spectrometer
• A&AS — Astronomy and Astrophysics Supplement Series
• RCS — Reaction Control System/Subsystem
• HCPCS — Health Care Common Procedure Coding System
• MACRO — Monopole, Astrophysics and Cosmic Ray Observatory
• SKA — Square Kilometre Array
• QTG — Quantum Theory of Gravity
• XUV — Extreme Ultraviolet
• SM — Standard Model
• EDMA — European Diagnostics Manufacturer's Association
• DSS — Digitized Sky Survey
• ATEL — Astronomer's Telegram
• LAIRT — Large-Aperture Infrared Telescope
• DH — Data Handling
• VLBI — Very Long Baseline Interferometry
• GPE — Gravitational Potential Energy
• TGF — Terrestrial Gamma-Ray Flash
• ADFRF — Ames-Dryden Flight Research Facility
• HDIF — Health Care Data Interchange Format
• VLT — Very Large Telescope
• NAHC — National Association of Home Care
• IMBH — Intermediate-Mass Black Hole
• SOHO — SOlar and Heliospheric Observatory
• CAPS — Cassini Plasma Spectrometer
• LEM — Lunar Excursion Module
• LLAGN — Low-Luminosity Active Galactic Nucleus
• ODE — Office of Device Evaluation
• MCO — Mars Climate Orbiter
• LCROSS — Lunar CRater Observation and Sensing Satellite

• PM — Pressurized Module
• MMIC — Medical Manufacturers' Information Council
• MPI — Minnesota Project Innovation
• MPC — Minor Planet Circulars
• CATS — Cheap Access to Space
• POL — Physician's Office Laboratory
• VAFB — Vandenberg Air Force Base
• TOCC — TDRS Operations Control Center
• ST-ECF — Space Telescope - European Coordinating Facility
• PBPK — Physiologically-Based Pharmacokinetic
• TR — Tape Recorder
• TCPA — Time for Closest Point of Approach
• PMA — Premarket Application
• AGN — Active Galaxy Nucleus
• MDC — Major Diagnostics Category
• MVEMJSUNP — Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto
• RAPS — radiologists, anesthesiologists, and pathologists
• SIMBAD — Set of Identifications, Measurements, and Bibliography for Astronomical Data
• SNR — SuperNova Remnant
• ZAMS — Zero Age Main Sequence, a star that has just become a main-sequence star (i.e. a star that has begun burning hydrogen in its core)
• HSP — High Speed Photometer
• EUCOMED — European Confederation of Medical Suppliers Associations
• ZPF — Zero-Point-Fluctuation
• POSS — Palomar Observatory Sky Survey
• SIRTF — Space Infrared Telescope Facility
• RMS — Record Management System
• ISO — Imaging Spectrometic Observatory
• CWS — Committee on World Standards
• HEDIS — Healthplan Employee Data and Information
• LDEO — Lamont-Doherty Earth Observatory
• PISCO — Parallel Imager for Southern Cosmological Observations
• XMM — X-ray Multi Mirror
• WISE — Wide-Field Infrared Survey Explorer
• ESIS — ESA Space Information Systems
• GTO — Geostationary Transfer Orbit
• OFAD — Optical Field Angle Distortion
• JCMT — James Clerk Maxwell Telescope
• ROSA — Romanian Space Agency
• NEA — Noise Equivalent Angle
• MNBIO — Minnesota Biotechnology
• DOC — Data Operations Center
• SPARTAN — Shuttle Pointed Autonomous Research Tool for Astronomy
• VTVL — Vertical Takeoff Vertical Landing
• IPA — Institute for Polyacryclate Sciences
• USAFA — United States Air Force Academy
• ANSAO — Annals of the Astrophysical Observatory of the Smithsonian Institution
• LRO — Large Radio Observatory
• BMDO — Ballistic Missile Defense Office
• MDR — Medical Device Reports
• SDAC — Solar Data Analysis Center

• CCLRC — Central Laboratory of the Research Councils
• ITU — Infrared Telescope Unit
• MA — Medical Alley
• MLI — Multilayer Insulation
• PVO — Pioneer Venus Orbiter
• LCG — light curve generator
• VAB — Vehicle Assembly Building
• LAN — Local Apparent Noon
• NASO — North American Space Operations
• HEO — Highly Elliptical Orbit
• ARKOD — Annual Report of the Kodaikanal Observatory
• DCR — Document Change Request
• JHU — The Johns Hopkins University (Baltimore, MD)
• MVCA — Minnesota Venture Capital Association
• TAI — International Atomic Time
• GAS — Getaway Special
• PN — Planetary Nebula
• UT — University of Texas
• WCS — World Coordinate System
• SA — Solar Array
• MOLA — Mars Observer Laser Altimeter
• PEB — Performance Evaluation Board
• SGR — Soft Gamma Repeater
• BHTA — British Healthcare Trades Industry
• CRAF — Comet Rendezvous/Asteroid Fly-by
• NEO — Near Earth Object
• MVM — Mariner Venus/Mercury
• PPN — Proto-Planetary Nebula
• NACA — National Advisory Committee on Aeronautics
• AGPS — Assisted Global Positioning System
• EROS — Earth Resources Observation Satellite
• AVSOM — American Association of Variable Stars Observers Monographs
• JWST — James Webb Space Telescope
• AP — Array Processor
• APM — Attached Pressurized Module (a.k.a. Columbus)
• PDR — Photo Dissociation Region
• ADSAC — Advanced Series in Astrophysics and Cosmology
• CNSA — China National Space Administration
• TEC — Thermal Electric Cooler
• RC — Relativistic Correction
• GST — Ground System Test
• RV — Radial Velocity
• ESTEC — European Space Technology Center
• POCC — Payload Operations Control Center
• MOWG — Mission Operations Working Group
• VHE — Very High Energy
• JD — Julian Date
• VLBA — Very Long Baseline Array
• ISM — Interstellar Medium
• HAO — High Altitude Observatory (NCAR)

• WTR — Western Test Range
• SMM — Solar Maximum Mission
• MPL — Mars Polar Lander
• MOC — Mars Observer Camera
• SOHO — Solar Heliospheric Observatory
• WCFZ — Worst Case Fresnel Zone
• STEREO — Solar Terrestrial Relations Observatory
• WSO — Wilcox Solar Observatory
• UGC — Uppsala General Catalog
• ATDRS — Advanced Tracking and Data Relay Satellite
• MER — Mars Exploration Rover
• AAOPR — Anglo-Australian Observatory Epping Preprint
• ACE — Actuator Control Electronics
• IWG — Interface Working Group
• SIC — Spacecraft Identification Code
• MHD — Magnetohydrodynamic
• NM — Non-Moment
• NR — Non-Relativistic
• ODC — Other Direct Cost
• EGG — Evaporating Gaseous Globule
• CEA — Center for EUV Astrophysics
• LERC — Lewis Research Center
• PAMELA — Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics
• COROT — Convection Rotation and Planetary Transits
• OV — Orbital Vehicle
• MMT — Multiple Mirror Telescope
• MINISAT — Miniature Satellite
• CIRCE — Confusion-limited Infrared Cosmology Explorer
• AVSOA — American Association of Variable Stars Observers Abstracts
• G — Gravity
• IGM — Intergalactic Medium
• JRASN — Journal of the Royal Astronomical Society of New Zealand
• CGRO — Compton Gamma-Ray Observatory
• OSTA — Office of Space and Terrestrial Applications (US NASA; now OAST)
• PBOSO — Publications of the Bosscha Observatory Lembang
• SUMER — Solar Ultraviolet Measurements of Emitted Radiation
• AAONW — Anglo-Australian Observatory Epping Newsletter
• GPC — General Purpose Computer
• SIM — Space Interferometry Mission
• ANTOK — Annals of the Tokyo Astronomical Observatory
• RAE — Radio Astronomy Explorer
• KBO — Kuiper Belt Object
• MMRAS — Memoirs of the Royal Astronomical Society
• FDR — Final Design Review
• HB — Hot Bands
• PAN-STARRS — Panoramic Survey Telescope and Rapid Response System
• E — Earth
• AVSOQ — American Association of Variable Stars Observers Quarterly Reports
• NEEDS — NASA end-to-end data system
• ODF — Orbit Determination Facility

• LVPS — Low Voltage Power Supply
• LAWOB — Laws Observatory Bulletin
• STO — Solar Terrestrial Observatory
• COPRE — Copenhagen University Observatory Reprints
• APINV — Astrophysical Investigations
• CL — Command Language
• PCA — Proportional Counter Array
• LF — Luminosity Function
• BHB — Blue Horizontal Branch
• CFF — Columbus Free Flyer
• MPF — Mars PathFinder
• AAT — Anglo Australian Telescope
• MSOCC — Multisatellite Operations Control Center
• ND — Neutral Density
• CCR — Configuration Change Request
• LST — Local Sidereal Time
• AVWG — Assembly and Verification Working Group
• TPF — Terrestrial Planet Finder
• MVI — Microgravity Vestibular Investigation
• PKAS — Publication of the Korean Astronomical Society
• SPIRE — Spectral Infrared Rocket Experiment
• FQR — Flight Qualification Review
• LITVC — Liquid Injection Thrust Vector Control
• LM&SS — Lunar Mapping and Scientific Survey
• UNOOSA — United Nations Office for Outer Space Affairs
• MMASI — Memoirs of the Astronomical Society of India
• NEAR — Near-Earth Asteroid Rendezvous
• CBR — Cosmic Background Radiation
• NERVA — Nuclear Engine for Rocket Vehicle Application
• PCARS — Publication of COMU Astrophysics Research Center
• ISBRV — International Space Business Review
• SANS — Stellar Autonomous Navigation System
• SFR — Star Formation Rate
• PCS — Pointing Control System
• SEF — Space Environmental Facility
• ISSRT — Israel Space Research and Technology Information Bulletin
• OPM — Outer Planet Mission
• IRFNA — Inhibited Red Fuming Nitric Acid
• LGRB(S) — long gamma ray burst(s)
• LOD — Length of Day
• IDT — Investigation Definition Team
• THAST — Theoretical Astrophysics
• ESTP — European Space Technology Platform
• MS — Master Schedule
• LASS — large-amplitude space simulator
• MMKMO — Memoirs Of The Kakioka Magnetic Observatory
• SQPK — staggered quadrature phase shift keying
• WXQ — Waxing Quarter
• PGOOO — Publications of the Goodsell Observatory
• CIAO — Chandra Interactive Analysis of Observations

• JBIS — Journal of the British Interplanetary Society
• SPIRIT — Spatial Infrared Telescope
• WBHF — WideBand High Frequency
• OG — Original Gravity
• FK4 — Fundamental Katalog 4
• BAVSO — Bulletin of the American Association of Variable Stars Observers
• OARE — Orbital Acceleration Research Experiment
• SRAG — Space Radiation Analysis Group
• MM — Memory Module
• IFA — Institute for Astronomy
• AEDRV — Astronomy Education Review
• OAO — Orbital Astronomical Observatory
• PLANEMO — Planetary Mass Object
• COWAT — Contributions of the University of Waterloo Observatory
• ANLL — Annals of the Observatory of Lucien Libert
• DWE — Doppler Wind Experiment
• VO — Virtual Observatory
• SXR — Soft X-Ray
• MEV — Mars Excursion Vehicle
• PDO — Publications of the Dominion Observatory Ottawa
• NSTL — National Space Technology Laboratories (NASA)
• SHA — Sidereal Hour Angle
• SNAP — Supernova / Acceleration Probe
• A/D — Analog to Digital (conversion)
• STATS — star tracker alignment test set
• SSRMS — Space Station Remote Manipulator System
• DEM — Differential Emission Measure
• LAT — Large Area Telescope
• MTC — Man-Tended Capability
• AP&SS — Astrophysics and Space Science
• DSSC — Deep Space Station Complex
• CORAD — Communications from the Radcliffe Observatory Pretoria South Africa
• A — Angstrom unit
• ABBA — ADC Backend For Bolometer Array
• NUSTAR — Nuclear Spectroscopic Telescope Array
• NRF — National Research Foundation
• PBRN — Publications of the Astronomical Institute of the University of Borneo
• MSP — Millisecond Pulsar
• CYSF — Cape York Space Facility
• AASPP — Astrononomy and Astrophysics Series
• TV — Thermal Vacuum
• MST — Mean Solar Time
• SSS — Spinning Sun Sensor
• POVRO — Publications of the Owens Valley Observatory
• OWL — Overwhelmingly Large Telescope
• STACC — Standard Telemetry And Communications Component
• SPPOL — Space Policy
• SDO — Scattered Disk Object
• BBT — Big Bang Theory
• UW — University of Wisconsin

• CEV — Crew Exploration Vehicle
• SSPF — Space Station Processing Facility
• QE — Quality Engineer
• SPICE — Survey Probe Infrared Celestial Experiment
• ROUS — Rodents Of Unusual Size
• FRAS — fellow of the Royal Astronomical Society
• TEA — Torque Equilibrium Attitude
• ASSA — Astronomical Society of South Africa
• RSU — Rate Sensor Unit
• MNSSA — Monthly Notes of the Astronomical Society of South Africa
• JAXA — Japan Aerospace Exploration System
• LH — Liquid Hydrogen
• WD — White Dwarf
• FOC — Faint Object Camera
• LPV — Long Period Variable
• ADASS — Astronomical Data Analysis Software and Systems
• LGM — Little Green Men
• CU — Calibration Unit
• TMT — Thirty-Meter Telescope
• APL&C — Astrophysical Letters Communications
• AXAF — Assembly and Verification Working Group
• PCOOO — Publications of the Cook Observatory
• AR — Active Region
• AAAD — Amateur Astronomers Association Delhi
• VEEGA — Venus-Earth-Earth Gravity Assist
• MTSRE — Mount Stromlo Observatory Reprints
• ZD — Zenith Distance
• ARBEI — Astrophysics Reports Publications of the Beijing Astronomical Observatory
• MPS — Mission Planning System
• PKIRO — Publications of the Kirkwood Observatory of Indiana University
• MRSR — Mars Rover Sample Return
• PDAO — Publications of the Dominion Astrophysical Observatory
• SAOCO — Smithsonian Astrophysical Observatory - Contributions to Astrophysics
• MMBAA — Memoirs of the British Astronomical Association
• SO — Space Operations
• IRBS — Infrared Background Sensor
• PAICZ — Publications of the Astronomical Institute of the Czechoslovak Academy of Sciences
• APSSS — Astrophysics and Space Science Supplement
• CDCA — Centre de Depoiullement des Cliches Astronimiques
• AGILE — Astro-rivelatore Gamma a Immagini Leggero
• SST — Space Surveillance and Tracking
• SST — Spectroscopic Survey Telescope
• CAPMI — Royal Observatory Cape Mimeogram
• UDL — Unique Data Log
• MMO — Mercury Magnetospheric Orbiter
• BD — Bonner Durchmusterung
• OMS — orbital maneuvering system
• ANSHO — Shanghai Observatory Annals
• IDA — International Dark-Sky Association, Inc.
• GRC — Glenn Research Center

• EGRET — Energetic Gamma Ray Experiment Telescope
• FRC — Flight Research Center
• OOTU — Origin Of The Universe
• SHAD — Stellar Horizon Atmospheric Dispersion
• ESAST — European Space Agency Scientific Technical Review
• PVSS — Publications of Variable Star Section
• ALMA — Atacama Large Millimeter Array
• LOWOB — Lowell Observatory Bulletin
• RGB — Red Giant Branch
• DLR — Deutschen Zentrum für Luft- und Raumfahrt
• VSSSC — Variable Star Section Special Circulars
• BWI — Baltimore-Washington International Airport, between Baltimore, Maryland and Washington, DC, United States
• DMF — Data Management Facility
• AVSOR — American Association of Variable Stars Observers Reports
• SIA — Solar Inertial Attitude
• PLR — Planetary Report
• LNSP — Lecture Notes and Supplements in Physics
• EHB — Extreme Horizontal Branch
• ET — External Tank
• TMA — Tycho Magnetic Anomaly
• PFAO — Publications of the Flower Astronomical Observatory
• CAROB — Carter Observatory Wellington New Zealand Astronomical Bulletins
• DSNPR — Deep Space Network Progress Report
• OXFOO — Oxford University Observatory Observations
• ICCD — Intensified Charge-Coupled Device
• PSC — Point Source Catalog
• CEAB — Central European Astrophysical Bulletin
• DDORE — David Dunlap Observatory Richmond Hill Reprints
• POHEL — Publications of the Astronomical Observatory Helsinki
• MAGIC — Major Atmospheric Gamma-ray Imaging Cherenkov Telescope
• PAIB — Publications of the Astronomy Institute of Bonn
• ESOB — European Southern Observatory Bulletin
• VMS — Vertical Motion Simulator
• ODAS — OCA (Observatoire de la Côte d'Azur) - DLR (Deutschen Zentrum für Luft- und Raumfahrt) Asteroid Survey
• OGSE — Optical Ground Support Equipment
• COLON — Communications of the University of London Observatory
• TOY — Time of Year
• DENIS — Deep Near-Infrared Survey
• PC — Planetary Camera
• PLAWO — Publications of Laws Observatory
• DDTE — Design, Development, Test, and Evaluation
• ISTS — Institute for Space and Terrestrial Science
• ANBOS — Annals of the Bosscha Observatory Lembang
• AGK3 — Katalog der Astronomischen Gesellschaft 3
• UIT — Ultraviolet Imaging Telescope
• SVPCS — Springer Verlag Springer Series on Physics Chemistry Space
• PASPS — Publications of the Astronomical Society of the Pacific Supplement
• PMC — Permanently Manned Capability (of Space Station)
• MACHO — Massive Astronomical Compact Halo Object
• HOTOL — Horizontal Takeoff and Landing Launcher

• ASTRA — Astrophysics and Space Sciences Transactions
• ASC — Agence Spatiale Canadienne
• PAB — Publications of The Astrophysics Branch Ottawa
• PAM-D — Payload Assist Module, Delta-class
• OAF — Optical Alignment Facility
• ROE — Royal Observatory, Edinburgh
• BANS — Bulletin of the Astronomical Institutes of the Netherlands, Supplement Series
• PHA — Potentially Hazardous Asteroid
• SSI — Solid-State Imager
• CCDM — Catalog of Components of Double and Multiple Stars
• HRMS — High Resolution Microwave Survey (SETI, Project Phoenix)
• SIRTF — Shuttle InfraRed Telescope Facility
• AXP — Anomalous X-Ray Pulsar
• VTHL — Vertical Takeoff Horizontal Landing
• ANCGH — Annals of Royal Observatory, Cape of Good Hope
• LST — Large Space Telescope
• CRISTA — Cryogenic Infrared Spectrometer Telescope For Atmosphere
• QPOE — Quick Position Oriented Event
• VOIR — Venus Orbiting Imaging Radar
• COAST — Communications in Asteroseismology
• SI — Science Instrument
• OBAFGKM — Oh, Be A Fine Girl, Kiss Me
• CTB — Cargo Transfer Bag
• RTS — Relative Time Sequence
• OTHB — Over The Horizon Backscatter
• PISTO — Publications of the Istanbul Observatory
• MICRE — University of Michigan Observatory Reprints
• XCS — XMM Cluster Survey
• LUT — Lookup Table
• SETI — Search for Extra Terrestial Intelligence
• SM — Secondary Mirror
• PMCCO — Publications of the Leander McCormick Observatory
• DG — Data Group
• ODB — Operations Data Base
• PPMTO — Publications of the Purple Mountain Observatory
• MMAAR — Maria Mitchell Association Annual Report
• TCE — Thermal Control Electronics
• COOXF — Communications from the University Observatory Oxford
• ATC — Absolute Time Command
• MSTO — Main Sequence Turn-Off
• CMBR — Cosmic Microwave Background Radiation
• BALTA — Baltic Astronomy
• ACRV — Astronaut Crew Rescue Vehicle
• GXY — Galaxy
• MEM — Maximum Entropy Method
• APPLE — Ariane Passenger Payload Experiment
• PWM — pulse width modulated
• LIRG — Luminous Infrared Galaxy
• VCS — Vernier Control System
• CARRE — Carter Observatory Wellington New Zealand Reprints

• MLY — Mega Light Year
• PRAST — Practical Astronomy
• SG — Shattered Galaxy (game)
• XRT — X-Ray Telescope
• NED — NASA/IPAC Extragalactic Database
• EBE — Extraterrestrial Biological Entity
• MTWRE — Mount Wilson and Palomar Observatory Reprints
• IAO — International Astronomy Olympiad
• EAAA — Escambia Amateur Astronomers Association
• AESS — Institute of Electrical and Electronic Engineers - Aerospace and Electronics Systems Society
• TMTE — Telemetry Test Equipment
• PNLF — Planetary Nebula Luminosity Function (astronomy)
• RICAP — Roma International Conference on Astroparticle Physics
• ITF — Intensity Transfer Function
• VAP — Verification and Acceptance Program
• SPO — Sacramento Peak Observatory
• VFN — virtual file name
• PLSS — Portable Life Support System
• PST — Personal Solar Telescope
• KODRE — Kodaikanal Observatory Reprints
• ZAP — Z Axis Precession
• SCP — Supernova Cosmology Project
• LEND — Lunar Exploration Neutron Detector
• WR — Wolf-Rayet Star
• GVI — Global Village Idiot
• IPNPR — Interplanetary Network Progress Report
• HTVL — Horizontal Takeoff Vertical Landing
• AU — Alternate Universe
• HZ — Habitable Zone
• AEA — Atomic Energy Agency
• TMC — Taurus Molecular Cloud
• SAS — Space Adaptation Syndrome
• CD — Cordoba Durchmusterung
• ADU — Astronomical Distance Unit
• ♅ — Uranus
• ZHR — Zenith Hourly Rate
• UIC — User Identification Code
• SEM — space environment monitoring
• GG — Gravity Gradient
• PF&CO — Publications of the Flower and Cook Astronomical Observatory
• APL — Astrophysical Letters
• LAMP — Lyman-Alpha Mapping Project
• TOYAL — Transactions of the Astronomical Observatory of Yale University
• TKSC — Tsukuba Space Center
• OHP — Observatoire de Haute-Provence
• COTS — Cheap Off the Shelf
• PUAMS — Publications of the Astronomical Institute of the University of Amsterdam
• ETOL — ESA Test and Operations Language
• GIO — graphics input/output
• C&DH — Control and Data Handling

• CCD — Color-Color Diagram
• CSVS — Catalogue of Suspected Variable Stars
• SAC — Solar Array Carrier
• VELLO — Very Low Luminosity Object
• NGS — National Geographic Society
• BDB — Big Dumb Booster
• SANSA — South African National Space Agency
• CELT — California Extremely Large Telescope
• SLAP — Space Link Access Protocol
• ASTQ — Astronomy Quarterly
• MV — Apparent Visual Magnitude
• DQE — Detector Quantum Efficiency
• SP — sun point
• VISTAR — visible space tracking and reconnaissance
• MEERE — Kenneth Mees Observatory Reprints
• SMART — Small Missions for Advanced Research in Technology
• VPF — Vertical Processing Facility
• CCA — Cambridge Contemporary Astrophysics
• HVR — Hyper-Variable Region
• OLT — Observatory Level Test
• EPD — Energetic Particles Detector
• ACURA — Association of Canadian Universities for Research in Astronomy
• CVZ — Continuous Viewing Zone (Hubble Space Telescope; US NASA)
• ARAA — Annual Review of Astronomy and Astrophysics
• M — Messier
• SAC — Saguaro Astronomy Club
• NLTE — Non-local Thermodynamic Equilibrium
• DPS — Division for Planetary Sciences
• GMT — Greenwich Mean Time (now obsolete)
• PODPS — Post Observation Data Processing System
• TZO — Thorne-Å»ytkow Object
• ♆ — Neptune
• RASS — ROSAT All-Sky Survey
• TEI — The Education Initiative
• HTHL — Horizontal Takeoff Horizontal Landing
• KP — Kitt Peak
• SL — Comet Shoemaker-Levy
• NSC — Navigational Star Catalog
• MPO — Mercury Planetary Orbiter
• FGE — Fine Guidance Electronics
• PASK — Publications of the Academy of Science Kasakstan
• CRS — Cambridge Reference Sequence
• MU — Memory Unit
• PA — Position Angle
• IMO — International Meteor Organization
• ADAF — Advection-dominated Accretion Flow
• HFQPO(S) — high-frequency quasi-periodic oscillation(s)
• AD — Analog to Digital
• MDRS — Mars Desert Research Station
• TBBT — The Big Bang Theory

• MV — absolute visual magnitude
• STARCAT — Space Telescope Archive Catalog
• SP — Solar Physics
• MIP — Moon Impact Probe
• MTWAR — Mount Wilson and Palomar Observatory Annual Report
• AIT — Assembly, Integration, and Testing
• GHA — Greenwich Hour Angle
• DES — Deep Ecliptic Survey
• APT — Automatic Photometric Telescope
• MTSOM — Mount Stromlo Observatory Mimeographs
• HRS — High Resolution Spectrograph
• MAG — Magnitude
• COPRI — Contributions from the Princeton University Observatory
• VSSRE — Variable Star Section Reprints
• BCG — Blue Compact Galaxy
• MONGO — Interactive graphics software package
• VILCO — Villanova University Observatory Contributions
• AC — Astrographic Catalogue
• KTB — Cretaceous-Tertiary Boundary
• MO — Mars Observer
• RNP — Rotation, Nutation and Precession
• WAA — Westchester Amateur Astronomers
• HLV — Heavy Lift Vehicle
• ETI — Extraterrestrial Intelligence
• LFT — Luyten Five-Tenths
• SOUST — Southern Skies
• OSB — Operations Software Branch
• AAA — Amateur Astronomers Association
• SED — Spectral Energy Distribution
• CAS — Cambridge Astrophysics Series
• WKO — Well-Known Object
• MTR — Mean Time to Restore
• STIF — Software Test and Integration Facility
• CPMF — cost plus management fee
• IRA — Infrared Astronomy
• SWAS — Submillimeter Wave Astronomy Satellite
• RAL — Radio Astronomy Laboratory
• AGN — Active Galactic Nucleus
• BIS — British Interplanetary Society
• SPDM — Special Purpose Dextrous Manipulator
• NEAF — North East Astronomy Forum
• PDAA — Publications of the Department of Astronomy, Austin, Texas
• UGZ — UG Z Camelopardalis
• ARGOS — Advanced Research Global Observation Satellite
• ULAS — Union List of Astronomy Serials
• CST — Constant
• NSL — Northrop Space Laboratory
• IPPPSSOOT — file naming convention for HST data sets
• UBM — Unpressurized Berthing Mechanism
• DCF — Data Capture Facility

• TSTO — Two-Stage-To-Orbit
• ROLUN — Reports of the Lund Observatory
• UDMH — Unsymmetrical Dimethyl Hydrazine (Alar Metabolite)
• ACV — Alpha Canes Venatici
• SGRB(S) — short gamma ray burst(s)
• ECA — Earth Crossing Asteroid
• SDMS — Spatial Data Management System
• NICMOS — Near-Infrared Camera and Multi-Object Spectrometer
• LMST — Local Mean Sidereal Time
• YSO — Young Stellar Object
• RXTE — Rossi X-Ray Timing Explorer
• ASCA — Advanced Satellite for Cosmology and Astronomy
• E/A — Ephemeris/Attitude
• DRS — Direct Receiving Station
• TAUVEX — Tel Aviv University Ultraviolet Explorer
• SPRL — Space Physics Research Laboratory
• CSPN — Central Star of Planetary Nebula
• TIUCS — Transactions of the International Union for Cooperation in Solar Research
• AMR — Antarctic Meteorite Research
• KM — Kilometres
• SAREX — Search and Rescue Exercise
• CPD — Cape Photographic Durchmusterung
• PEGA — Programs in Extra-Galactic Astronomy
• IRDC — Infrared Dark Cloud
• STAVF — Space Telescope Assembly and Verification Facility
• DDCU — DC-to-DC Converter Unit
• PCS — Physics and Chemistry in Space
• SXT — Soft X-Ray Telescope
• ♇ — Pluto
• VRCS — Vernier Reaction Control System
• XN — X-ray Nova
• LCDM — Lambda Cold Dark Matter
• CPMM — characters per millimeter
• ACS — Advanced Camera for Surveys
• PAD — Pulse Amplitude Discriminator
• NSSCC — NORAD Space Surveillance Computation Center
• SST — Spitzer Space Telescope
• CIT — Circumstellar Imaging Telescope
• CSM — Command and Service Module
• SSP — Subsolar Point
• VGRF — Variable-Gravity Research Facility
• WIRCAM — Wide-field InfraRed Camera, instrument on the Canada-France-Hawaii Telescope
• STAR — Space Telescope Axial Replacement
• SID — Sudden Ionospheric Disturbance
• BRITE — Bright-Star Target Explorer
• IDT — Instrument Development Team
• CCAR — Colorado Center for Astrodynamics Research
• STERJ — Solar, Terrestrial and Environmental Research Japan
• GCVS — General Catalog of Variable Stars
• DSO — Deep Sky Object

• MOND — Modified Newtonian Dynamics
• LBN — Lynds Bright Nebula
• LBVS — Luminous blue variable
• EU — Engineering Unit
• AQR — Aquarius
• OPS — Operations Division
• VSSCI — Variable Star Section Circulars
• RPI — Rensselaer Polytechnic Institute (Rensselaer, NY)
• TOPS — Toward Other Planetary Systems
• NEP — North Ecliptic Pole
• EAPU — External Auxiliary Power Unit
• SERF — Space Environment Research Facility
• VRM — Venus Radar Mapper
• DPOSS — Digitized Palomar Observatory Sky Survey
• EKBO — Edgeworth-Kuiper Belt Object
• SCSP — Science and Culture Series Physics
• SMS — Science Mission Specification
• CTO — Color Temperature Orange
• LCRS — Las Campanas Redshift Survey
• WTTS — Weak-Line T-Tauri Star
• CEMP — Carbon-Enhanced Metal-Poor
• PUSNO — Publications of the US Naval Observatory
• AGK — Astronomische Gesellschaft Katalog
• LPICO — Lunar and Planetary Institute Contributions
• ISR — Instrument Science Report
• DISR — Descent Imager/Spectral Radiometer
• CNSR — Comet Nucleus Sample Return
• LSST — Large Synoptic Survey Telescope
• BOOK — Bio Optical Organized Knowledge
• ABB — After the Big Bang
• EJASA — Electronic Journal of the Astronomical Society of the Atlantic
• IPMO — Isolated Planetary-Mass Objects
• OMC — Orion Molecular Cloud
• FEM — Finite Element Model
• NG — Newsgroup
• DQF — Data Quality File
• CDMH — Cold Dark Matter Haloes
• GSPC — Guide Star Photometry Catalog
• AOR — Astronomical Observation Request
• RLQ — Radio Loud Quasar
• JVO — Japanese Virtual Observatory
• MFR — Manipulator Foot Restraint
• O — Oblivion
• CAMAC — Computer-Aided Measurement and Control
• MPC — Minor Planets Circular
• THEMIS — Thermal Emission Imaging System
• FOCAS — Faint Object Classification and Analysis System
• CEO — Corporate Europe Observatory
• SPWEA — Space Weather
• SCAS — Southern Cross Astronomical Society, Inc.

• CREAM — Cosmic Ray Energetics and Mass
• LWS — Long Wavelength Spectrometer
• TFMRP — Transfer Function Mode Reduction Package
• YSG — Yellow Super Giant
• HIPO — Hierarchic Input-Process-Output
• ENE — East North East
• NEMP — Nitrogen-Enhanced Metal-Poor
• RTLT — Round Trip Light Time
• CCIR — Comit? Consultatif International Pour La Radio (French For Consultative Committee On International Radio
• NIMS — Near-Infrared Mapping Spectrometer
• KAIT — Katzman Automatic Imaging Telescope
• DOV — Director of Orbital Verification
• FDI — failure detection and isolation
• RABF — Radio Astronomy Bandstop Filter
• UGSS — UG SS Cygni
• ♃ — Jupiter
• EMP — Extremely Metal-Poor
• FACC — Ford Aerospace Communications Corporation
• WOMBAT — Wavelength-Oriented Microwave Background Analysis Team
• ADIL — Astronomy Digital Image Library
• IRAC — International Radio Advisory Committee
• TMP — Technical Management Plan
• OVIWG — Orbital Verification Implementation Working Group
• GOX — Gaseous Oxygen
• NEA — Near-Earth Asteroid
• FPA — Focal Plane Assembly
• FIRST — Frontiers in Research: Space and Time
• DSD — Data Systems Division
• R&I — Receiving and Inspection
• BBH — Big Black Hole
• SCSA — Science and Culture Series Astrophysics
• ATR — Absolute Time Reference
• ZOF — zone of exclusion
• SMBH — Super Massive Black Hole
• E — Eclipsing
• ACP — Aerosol Collector and Pyrolyser
• MCSA — Mir Cooperative Solar Array
• DN — Dwarf Novae
• SCOA — Smithsonian Contributions to Astrophysics
• CSAA — Committee on Space Astronomy and Astrophysics
• TAR — Test Authorization Request
• DMS — Data Management Subsystem
• Q&A — qualification and acceptance
• CSM — Circumstellar Material
• AST — Apparent Solar Time
• SAT — Synthetic Aperture Telescope
• ♄ — Saturn
• EAAE — European Association for Astronomy Education
• SLOI — Satellite Lake Observatory Initiative
• CFCO — Committee for Crescent Observation

• ACIS — Advanced CCD Imaging Spectrometer
• ATM — Amateur Telescope Maker
• SB — Spectroscopic Binary
• SSPRV — Space and Solar Power Review
• VSOLB — Variable Star Observers League in Japan - Bulletin
• RIACS — Research Institute for Advanced Computer Science
• LV — Lunette Verte
• ABRIXAS — A BRoadband Imaging X-ray All-sky Survey
• TCB — Barycentric Coordinate Time
• UKST — United Kingdom Schmidt Telescope
• SUVSR — Scandinavian Union of Amateur Astronomers Variable Star Section
• CVAS — Chippewa Valley Astronomical Society
• SST — Software Support Team
• QPO — Quasi-periodic Oscillation
• EU — Extended Universe
• SPSS — Science Planning and Scheduling System
• EOSL — Earth Observation Systems Laboratory
• GDS — Great Dark Spot
• AEDP — Astrometry and Engineering Data Processing
• MEV — million electron volts
• CFCP — Center for Cosmological Physics
• VZA — Viewing Zenith Angle
• CAI — Calcium Aluminum-rich Inclusion
• FAME — Full-sky Astrometric Mapping Explorer
• BDF — Block Data Format
• DCEP — Delta Cepheid
• LMSC — Lockheed Missile and Space Corporation
• GLOW — Gross Lift-Off Weight
• SAREX — Space Amateur Radio Experiment
• LENA — Low Energy Neutrino Astronomy
• RQZ — Radio Quiet Zone
• MS — Mission Schedule
• TYC — Tycho
• TT — Terrestrial Time
• CCL — Closed Conference Loop
• TUASR — Tokyo University Institute of Space and Aeronautical Science Report
• GMRT — Giant Meter-wave Radio Telescope
• STOL — Systems Test and Operations Language
• AST — Astrometry Science Team
• UKIRT — United Kingdom Infrared Telescope
• AAT — Anglo-Australian Telescope
• DM — Dark Matter
• WISARD — Web Interface for Searching Archival Research Data
• PFS — Percent Full Scale
• SGEMP — Space-Generated Electromagnetic Pulse
• GAF — Geographic Adjustment Factor
• RVMA — Reviews in Modern Astronomy
• SPT — South Pole Telescope
• M — Mira
• QPSK — quadriture phase shift keying

• SCUBA — Submillimetre Common User Bolometer Array
• BDEC — Bendix Field Engineering Corporation
• PTF — Payload Test Facility
• TUASB — Tokyo University Institute of Space and Aeronautical Science Bulletin
• PASP — Publications of the Astronomical Society of Pacific
• EA — Eclipsing Algol
• VPU — video processing unit
• SUPRIME — SUbaru PRIME focus CAMera
• UCSD — University of California San Diego
• WAA — Western Amateur Astronomers
• DN — Digital Number
• UKIDSS UKIRT — Infrared Deep Sky Survey
• DN — Dwarf Nova
• SQPN — staggered quadriphase pseudo-random noise
• SR — Spectral Recording
• EAAS — East Antrim Astronomical Society
• IPS — Inches Per Second
• MYSO — Massive Young Stellar Object
• FAST — Fast Auroral Snapshot Explorer
• SLTV — System Level Thermal Vacuum
• STSDAS — Space Telescope Science Data Analysis System
• PDBI — Plateau de Bure Interferometer
• VERITAS — Very Energetic Radiation Imaging Telescope Array System
• SARA — Satellite pour Astronomie Radio Amateur
• XIS — X-ray Imaging Spectrometer
• PW&SO — Publications of the Warner Swasey Observatory
• CDIMP — Catalogue of Discoveries and Identifications of Minor Planets
• IRCS — Infrared Camera and Spectrograph
• MOSES — Mission Operations and Systems Engineering Support
• MRSRM — Mars Rover and Sample Return Mission
• RRAT — Rotating RAdio Transient
• SQM — Strange Quark Matter
• RM — Retrieval Mode
• QZ — Quasi Zenith
• SCUBA-2 — Submillimetre Common User Bolometer Array 2
• IFT — Inverse Fourier Transform
• CSPAR — Center for Space Plasma and Aeronomic Research
• IQL — Interactive Query Language
• CBS — Contract and Business Services
• CIBR — Cosmic Infrared Background Radiation
• SESD — Science and Engineering Systems Division
• BATC — Beijing-Arizona-Taiwan-Connecticut
• BEM — Bug-Eyed Monster (Late 40's-early 50'soft-used, and still in use, Sci-Fi term)
• TAG — Two-Axis Gimbal
• PEP — Proposal Entry Processor
• GMC — Giant Molecular Cloud
• SMA — Secondary Mirror Assembly
• ESTR — Engineering and Science Tape Recorder
• GEIS — Generic Edited Information Set
• PNNV — Planetary Nebula Nucleus Variable

• CHZ — Circumstellar Habitable Zone
• SSRV — Space Science Reviews
• SPIF — Shuttle/POCC Interface Facility
• PMDB — Project Management Data Base
• SPE — Static Phase Error
• UCLAP — University of California Los Angeles - Astronomical Papers
• OPO — Operations Project Office
• LBV — Luminous Blue Variable
• IDT — Image Dissector Tube
• SWAT — Swift Action Team
• CRAP — Completely Radical Anthropic Principle
• IMIO — Image Input/Output
• SOARD — Steward Observatory Asteroid Relational Database
• SIF — Science Instrument Formatter
• ICSO — International Conference on Space Optics
• SAL — Space Astronomy Laboratory (Univ. Wisconsin, Madison WI)
• TWA — TW Hydrae Association
• SWEEPS — Sagittarius Window Eclipsing Extrasolar Planet Search
• SFS — Smallest Feature Size
• PDA — Photon Detector Assembly
• CANX — Canadian Advanced Nanospace Experiments
• OCS — Optical Control System
• CTRF — Celestial and Terrestrial Reference Frames
• Z — Redshift Factor
• SPA — Solar Panel Assembly
• AVO — Astrophysical Virtual Observatory
• PCT — Program Coordinator Team
• AOC — Award Of Contract
• IPPW — International Planetary Probe Workshop
• ACS — Actuator Control System
• RPSS — Remote Proposal Submission System
• TECU — Technology and Culture
• SUGRA — Supergravity
• CSO — Caltech Submillimeter Observatory
• TAMS — Terminal Age Main Sequence
• FTETTM — From The Earth To The Moon
• LINER — Low Ionization Nuclear Emission Region
• COMPTEL — Compton Telescope
• UST — Universal Standard Time
• SHAR — Stellar Horizon Atmospheric Refraction
• PRESTO — Project to Re-Engineer Space Telescope Observing
• FSM — First Servicing Mission
• GSOWG — Ground Systems Operations Working Group
• SAGA — Solar Array Gain Augmentation
• WIRE — Wide-Field Infrared Explorer
• WSGS — White Sands Ground Station
• MWO — Mount Wilson Observatory
• TT — Terrestrial Time (replaced Ephemeris Time, ET)
• UNPSA — United Nations Programme on Space Applications
• IRAC — Infrared Array Camera

• LOTOSS — Lick Observatory and Tenagra Observatory Supernova Searches
• CAAA — Capital Area Astronomy Association
• SV — Science Verification
• STDN — Satellite Tracking and Data Network
• SDAS — Scientific Data Analysis System
• USOC — Unified System Orbit Computation
• MCG — Morphological Catalog of Galaxies
• EAFB — Edwards Air Force Base
• BCCP — Berkeley Center for Cosmological Physics
• SEB — Source Evaluation Board
• IDM — Intelligent Database Machine
• EVAC — East Valley Astronomy Club
• STEIS — Space Telescope Electronic Information System
• HRA — High Resolution Apodizer
• AWG — Astronomy Working Group
• SETA — Search for Extra Terrestrial Artifacts
• PNS — Pulsed Neutron Source
• ORB — Observatoire Royal de Belgique (Royal Observatory of Belgium)
• SNAP — Structural Network Analysis Program
• VRSD — Verification Requirements and Specifications Document
• NGST — Next Generation Space Telescope
• CM — Critical mass
• RTC — Real-Time Command
• MOTV — Manned Orbital Transfer Vehicle
• USMP — United States Microgravity Payload
• CG — Compact Galaxy
• ERRSAC — Eastern Regional Remote Sensing Applications Center
• CADC — Canadian Astronomical Data Center
• NEO — Near-Earth Object - Non-combatant Evacuation Operations
• NEAP — Near Earth Asteroid Prospector
• SIMM — Standard Inline Memory Module
• IUESIPS — Iue Spectral Image Processing System
• IRTF — Infrared Telescope Facility
• QV — quick visual
• RGA — Rate Gyro Assembly
• XMM — X-ray Multi- Mirror satellite
• RMS — Remote Manipulator System
• SMOV — Servicing Mission Observatory Verification
• AP.J — Astrophysical Journal
• SQIID — Simultaneous Quad Infrared Imaging Device
• IMSL — International Mathematical and Statistical Library
• DCMF — Data Capture and Management Facility
• MT — Moving Target
• SRS — Stellar Radiation Sensor
• LONEOS — Lowell Observatory Near-Earth-Object Search
• SN — SuperNova
• TAROT — Télescope à Action Rapide pour les Objets Transitoires
• CNO — Carbon-Nitrogen-Oxygen
• SITB — System Integration and Testing Branch
• ACTS — Advanced Communications Technology Satellite

• C/C — configuration control
• IIPS — Interactive Image Processing System
• CAAS — Central Arkansas Astronomical Society
• OV — Orbital Verification
• LRG — Luminous Red Galaxy
• DBW — decibel reference to 1 watt
• CVC — Current-to-Voltage Converter
• APT — Automated Patrol Telescope
• SVPHA — Soviet Physics Astronomy
• SJC — slit jaw camera
• IRAIT — International Robotic Antarctic Infrared Telescope
• UGSU — UG SU Ursae Majoris
• UV-VIS — Ultraviolet - Visible
• SRAA — Scenic Rim Astronomy Association, Inc.
• SPP — Subset Preprocessor
• GTO — Guaranteed Time Observer
• FGS — Fine Guidance Sensors
• ASKAP — Australian Square Kilometre Array Pathfinder
• ALAT — Airborne Large Aperture Telescope
• ATPI — Astronomy Through Practical Investigations
• MACRO — Monopoles, Astrophysics, and Cosmic Ray Observatory
• XBP — X-Ray Bright Point
• ACIT — Automatic Comet Imaging Telescope
• XSC — Extended Source Catalog
• SSC — Science Support Center
• BAC — Bordeaux Astrographic Catalog
• IBBTF — Imagination Baffled By The Facts
• ADAS — Asiago DLR Asteroid Survey
• LMXB — Low-Mass X-Ray Binary
• ODL — Observation Data Log
• FES — Fine Error Signal
• AAAM — Active Amateur Astronomers of Maryland
• ISPM — International Solar Polar Mission
• CSS — Catalina Sky Survey
• TAAS — The Albuquerque Astronomical Society
• FPSA — FPA Structure Assembly
• STOCC — Space Telescope Operations Control Center (GSFC, Greenbelt MD)
• REPT — Relativistic Electron-Proton Telescope
• NOMAD — Naval Observatory Merged Astrometric Dataset
• PASP — Proceedings of the Astronomical Society of the Pacific
• IDMP — International Daylight Measurement Program
• LOSS — Lick Observatory Supernova Search
• COMICS — Cooled Mid-Infrared Camera and Spectrometer
• EAPJ — Electronic AstroPhysical Journal Letters
• ASWG — Astronomical Science Working Group
• ACM — Asteroids Comets Meteors
• BMO — Black Moving Object
• SOFA — Standards of Fundamental Astronomy
• BITP — Bogolyubov Institute for Theoretical Physics
• SIS — SETI (Search for Extra-Terrestial Intelligence) Intercept System

• SFC — Space Forecast Center
• RPO — Research Programs Office
• HDOS — Hughes Danbury Optical Systems (Danbury CT)
• EIT — Extreme Ultraviolet Imaging Telescope
• MIDAS — Munich Image Data Analysis System
• DVA — Detector Vacuum Assembly
• PMPS — Parkes Multibeam Pulsar Survey
• STIF — Science and Technology Information Facility
• SHAD — Stellar Horizon Attitude Determination
• XANES — X-Ray Near Edge Spectroscopy
• AMASE — Astrophysics Multi-Spectral Archive Search Engine
• P&A — Physics and Astronomy
• ASP — Analog Signal Processor
• ELIAS — European Large Area ISO Survey
• RAG — Radio Astronomy Group
• WAA — Wiener Arbeitsgemeinschaft für Astronomie
• SS — System Simulator
• BHXRT — Black Hole X-Ray Transient
• CNS — Computing and Network Services
• ACT — Astrographic Catalog Tycho
• SJR — Software Justification Report
• CISCO — Cooled Infrared Spectrograph and Camera for OHS
• APSB — Advance Planning Systems Branch
• C&A — calibration and analysis
• DIB — Diffuse Interstellar Band
• LWR — Long Wavelength Redundant
• CIB — Cosmic Infrared Background
• CXO — Chandra X-ray Observatory
• UMCP — University of Maryland College Park
• OPUS — OSS and PODPS Unified Systems
• SNY — Starry Night Backyard
• BOAO — Bohyunsan Optical Astronomy Observatory
• RNGC — Revised New General Catalog
• LFSA — List of Frequently Seen Acronyms
• SIAF — Science Instrument Aperture File
• MONS — Measuring Oscillations in Nearby Stars
• WSAL — Winston-Salem Astronomical League
• SS — Safing System
• MXRB — Massive X-Ray Binary
• ESIS — European Space Information System
• BLO — Bl Lac Object
• HERA — Hermes Robotic Arm
• AAS — Archaeology Astronautics and Seti
• R-L — Richardson-Lucy
• AJD — Astronomical Julian Day
• ASIAA — Academia Sinica Institute of Astronomy and Astrophysics
• SAS — Science Analysis Software
• SOSYR — Solar System Research
• VIMOS — Visible Multiobject Spectrograph
• QEH — Quantum Efficiency Hysteresis

• TCG — Geocentric Coordinate Time
• RC — Reference Catalogue
• IMAGE — Imager for Magnetopause to Auroral Global Exploration
• ET — Ephemeris Time (now obsolete)
• MMTO — Multiple Mirror Telescope Observatory
• CMC — Carlsberg Meridian Catalogue
• BST — British Summer Time [GMT 0100]
• ROTSE — Robotic Optical Transient Search Experiment
• PEPSI — PEP System
• MGS — Mars Global Surveyor
• NODO — NASA Orbital Debris Observatory
• DSOS — Dish Surface Optimization System
• WINAR — Windsor Observatory Annual Report
• ASTRO — Autonomous Space Transport Robotic Operations
• SWAN — Solar Wind ANisotropy
• TRES — Transatlantic Exoplanet Survey
• WFCAM — Wide Field Camera
• OPB — Observation Planning Branch
• HLO — High Light Output
• ETRD — Engineering Tape Recorded Data
• CTIO — Cerro Tololo Inter-American Observatory
• CIP — Celestial Intermediate Pole
• OT — Off-Topic
• BRAVO — Back-End Redesign for Added Value for Observers
• NAIF — Navigation Ancillary Information Facility
• NLDP — National Launch Development Program
• SPIEL — Signal Processing Interactive Extensible Language
• MPCS — Minor Planet circulars Supplement
• C&T — Communications and Tracking
• LSO — Large Solar Observatory
• SBIG — Santa Barbara Instrument Group
• CTTS — Classical T Tauri Star
• EPAO — Educational and Public Affairs Office
• SXARI — SX ARIetis
• VISTA — Visible and Infrared Survey Telescope for Astronomy
• DIN — Day Into Night
• GASA — Graduate Astronomy Students Association
• SEST — Swedish-ESO Submillimetre Telescope
• WF/PC — Wide Field/Planetary Camera
• SPS — Solar Power Satellite
• STR — Science Tape Recorder
• RFT — Rich Field Telescope
• RLOF — Roche Lobe Overflow
• CTWG — Calibration Targets Working Group
• RSAA — Research School of Astronomy and Astrophysics
• OCB — Operational Configuration Baseline
• SWRI — Southwest Research Institute
• KAO — Kuiper Airborne Observatory
• CINEOS — Campo Imperatore Near-Earth Object Survey
• STIC — Space Telescope Institute Council

• DAV — Deerlick Astronomy Village
• PMIRR — Pressure Modulated InfraRed Radiometer
• START — Solar Thermal Analysis Review and Training
• OMS — Observatory Monitoring System
• PSR — Project Status Review
• TR — TRansit
• HVPS — High Voltage Power Supply
• CSWA — Committee on the Status of Women in Astronomy
• SSSPM — SuperCOSMOS Sky Survey Proper Motion
• MOR — Mission Operations Room
• TASS — The Amateur Sky Survey
• CODMAC — Committee on Data Management and Computing
• CGSS — Catalogue of Galactic S Stars
• SINGS — Spitzer Infrared Nearby Galaxies Survey
• ACA — Atacama Compact Array
• EGRET — Energetic Gamma-Ray Experiment Telescope
• UGSS — U Gem variable type star (SS Cygnus subtype)
• VVDS — VIMOS-VLT Deep Survey
• PFI — Partial Frame Image
• RWA — Reaction Wheel Assembly
• NOT — NOrdic Telescope
• DES — Dark Energy Survey
• PWN — Pulsar Wind Nebula
• GSSS — Guide Star Selection System
• DCB — Design Change Board
• SSP — Surface Science Packages
• EME — Earth-to-Moon-to-Earth
• EMP — Ephemerides of Minor Planets
• TTC — telemetry, tracking, and command
• NAO — National Astronomy Olympiad
• SAM — Small Angle Maneuver
• OAOT — Orbiting Astronomical Observatory Technology
• HESI — High Energy Solar Imager
• ITT — International Telephone and Telegraph Corporation
• CASB — Catalogs and Survey Branch
• RRL — RR Lyrae
• LP — Lonely Planet
• DCX — Delta Clipper Experimental
• APASS — AAVSO Photometric All-Sky Survey
• ALTS — Astronomy Lunch Time Seminar
• WKAA — West Kentucky Amateur Astronomers
• ATCA — Australia Telescope Compact Array
• SDA — Science Data Analyst Small Computer Systems Interface
• CXBR — Cosmic X-ray Background Radiation
• ORR — Orbit Readiness Review
• MAST — Multimission Archive at Space Telescope
• PPF — Payload Processing Facility (USAF)
• SCT — Schmidt-Cassegrain Telescope
• CRTS — Centre Royal de Teledetection Spatiale
• IRD — Interface Requirements Document

• WGAS — Working Group on Astronomical Software
• BCD — Blue Compact Dwarf
• SVAL — Soviet Astronomy Letters
• CDBS — Calibration Data Base System
• MLRS — McDonald Laser Ranging Station
• TIC — Tycho Input Catalog
• PSR — Pulsar Supernova Remnant
• SIRD — Support Instrumentation Requirements Document
• PORTS — Preliminary Operations Requirements and Test Support
• PK — Perek-Kohoutek
• OSCAR — Orbital Satellite Carrying Amateur Radio
• ECT — Equator Crossing Time
• FRB(S) — gamma ray burst(s)
• LETGS — Low Energy Transmission Gratings Spectrometer
• WIYN — Wisconsin Indiana Yale NOAO Telescope Consortium
• DSOB — Data Systems Operations Branch
• MBH — Massive Black Hole
• LFAE — Light Field Attribute Explorer
• ECEF — EarthCentered EarthFixed
• GDSO — Georgi Dobrovolski Solar Observatory
• TCS — Thermal Control System (Subsystem)
• GSY — Galactic Standard Year
• MKO — MAUNA KEA OBSERVATORY
• OSS — Observation Support System
• ESTEC — European Space Research and Technology Center
• CRAQ — Centre for Research in Astrophysics of Québec
• PSL — Program Support Library
• ISEE — International Sun Earth Explorer
• EMU — Extra-vehicular Mobility Unit
• WFIS — Wide-Field-of-view Imaging Spectrometer
• PEPE — Plasma Experiment for Planetary Exploration
• IOTA — Infrared-Optical Telescope Array
• ICF — Intrinsic Correlation Function
• GRB(S) — gamma ray burst(s)
• NTT — New Technology Telescope
• UGWZ — UG WZ Sagittae
• SEI — Space Exploration Initiative
• FGSAA — FGS Access Area
• OCX — observation comments file
• WDS — Washington Double Star
• EUSO — Extreme Universe Space Observatory
• SIPS — Southern Infrared Proper Motion Survey
• SET — Science, Engineering and Technology
• LINEAR — Lincoln Near Earth Asteroid Research
• GBT — Green Bank Telescope
• TRACE — Transition Regional and Coronal Explorer
• ORFEUS — Orbiting and Retrievable Far and Extreme Ultraviolet Spectrometer
• ODS — Our Dark Skies
• ASAS — All Sky Automated Survey
• SVA — Soviet Astronomy

• OCO — Oort Cloud Object
• CCITT — Consultative Committee on International Telegraph & Telephone
• MVAC — Mission Valley Astronomy Club
• ADOR — Astrometry and Design Operations Review
• NESS — Near Earth Space Surveillance
• VLB — Very Long Baseline
• PZT — Photographic Zenith Tube
• BRAS — Baton Rouge Astronomical Society
• IRS — International Reference Star
• NAAP — Nebraska Astronomy Applet Project
• CCO — Catalogue of Cometary Orbits
• ULE — Ultralow Expansion
• AB — Archive Branch
• FIRST — Far InfraRed and Submillimeter Space Telescope
• ICRC — International Cosmic Ray Conference
• WIYN — Wisconsin, Indiana University, Yale University, and NOAO (National Optical Astronomy Observatories) Observatory
• SEST — Swedish ESO Submillimeter Telescope
• PROS — Post Reduction Offline Software
• GAAC — Gloucester Area Astronomy Club
• NIU — NASCOM Interface Unit
• VMOA — Valley of the Moon Observatory Association
• CGRO — Compton Gamma Ray Obsrvatory
• AGAPE — Andromeda Galaxy and Amplified Pixels Experiment
• LN2 — liquid N2
• EARS — Electrostatic Atmospherics Radio Sensor
• MLSO — Mauna Loa Solar Observatory
• TML — Total Mass Loss
• TAC — telemetry and command processor
• MTL — Mission Time Line
• CG — Cometary Globule
• ILOC — International Lunar Occultation Center
• MMR — Mean-Motion Resonance
• CVN — Canes Venatici (A constellation in the Northern Hemisphere near Ursa Major and Boötes, under the handle of the Big Dipper)
• SPST — Science Planning and Scheduling Team
• IAAC — Internet Amateur Astronomers Catalog
• TRACE — Transition Region and Coronal Explorer
• SFU — Space Flier Unit
• DNS — Double Neutron Star
• TB — Thermal Balance
• CMT — Carlsberg Meridian Telescope
• FD — File Descriptor
• FEAT — Fine Error Averaging Test
• SOGS — Science Operations Ground System
• AEG — Astro Event Group
• MW — Milky Way
• IARA — Italian Amateur Radio Astronomy
• SCRT — Stockholm Centimetre Radio Telescope
• RORF — Radio/Optical Reference Frame
• SSRT — Single Stage Rocket Technology
• JOP — Joint Observing Program

• AET — Accuracy Enhancing Technology
• PROPLYD — Protoplanetary Disk
• UESAC — Uppsala-ESO Survey of Asteroids and Comets
• SMC — Small Magellanic Cloud
• TO — target of opportunity
• CSMA — Committee on the Status of Minorities in Astronomy
• ACYG — Alpha CYGni
• CCMS — Command Control and Monitor System
• UKSA — United Kingdom Space Agency
• WAPP — Wide-base Arecibo Pulsar Processor
• FASTT — Flagstaff Astrometric Scanning Transit Telescope
• AC — Ascendant Cusp
• GIMP — Geomagnetically Induced Motion Problem
• SMM — science mission management
• OCST — Office of Commercial Space Transportation
• FRONT — Front Range Observational Network Testbed
• SOFIA — Stratospheric Observatory for Infrared Astronomy
• TC — Test Conductor (Controller)
• EOR — End of Record
• PEP — PhotoElectric Photometry
• CSLG — Campus-wide Software License Grants Program
• IRAF — Image Reduction and Analisys Facility
• ESB — Engineering Support Branch
• MOID — Minimum Orbit Intersection Distance
• CRSR — Center for Radiophysics and Space Research
• R&R — Reproducibility And Repeatability
• LSVT — Large Solar Vacuum Telescope
• TAU — Thousand Astronomical Unit
• WFPC2 — Wide Field and Planetary Camera 2
• NLTT — New Luyten Two-Tenths
• BCEP — Beta CEPhei
• SIPE — Science Instrument Protective Enclosure
• CRL — Compound Refractive Lens
• LC — Las Campanas observatory
• OAO — Orbiting Astronomical Observatory
• CRRES — Combined Release Radiation Effects Satellite
• PSI — Planetary Science Institute
• SSD — Science Support Division
• MS — Meteor Scattering
• ASW — Address and Synchronization Word
• BPM — Bruce Proper Motion
• HBOP — Hale-Bopp comet
• NGC — New General Catalog
• CCO — Central Compact Object
• LEST — Large Earth-based Solar Telescope
• KIC — Kepler Input Catalog
• HETE-2 — high energy transient explorer
• PSR — Pulsar
• UVCS — Ultraviolet Coronal Spectrometer
• MOXE — MOnitoring X-Ray Experiment

• DBSA — Database and System Administration team
• OSSO — Observation Science Support Office
• ITA — Institute of Theoretical Astronomy
• URPX — Uranian Ring Plane Crossing
• MEPCO — Meeting of European Planetary and Cometary Observers
• VSAT — Very Small Angle Tracker
• SCARS — Science Computing & Research Support Division
• HKO — Hong Kong Observatory
• OPD — Operations and Data Processing Division
• PVTEL — PV TELescopii
• BSS — Blue Straggler Star
• TPI — Technical Proposal Instructions
• UG — U Geminorum
• EAC — European Astronaut Centre
• GEM — Galileo Europa Mission
• NPS — North Polar Sequence
• ORD — Operations Requirements Document
• WFS — Wave Front Sensor
• SIB — Science Instrument Branch
• WFAO — Wide Field Adaptive Optics
• RAMBO — Robust associations of massive baryonic objects
• IGI — Interactive Graphics Interpreter
• SCMS — STScI Code Management System
• ERO — Extremely Red Object
• SPAM — Special People Admiring Meteors
• BCVS — Bibliographic Catalogue of Variable Stars
• BZ — Brillouin zone - a uniquely defined primitive cell in reciprocal space
• LP — Luyten Palomar
• MSE — Milton S. Eisenhower library
• BATTERS — Bisei Asteroid Tracking Telescopes for Rapid Survey
• SPD — Science Programs Division
• STL — science trailer line
• CAL — Casual Astronomy League
• ACPG — Astronomical Community Participation Group
• SFD — SXT Full Disk
• SIMA — Secondary Mirror Incremental Motor Actuator
• FIGV — Factor Inercial de Ganho solar do enVidracado
• GRAND — Gamma Ray and Neutron Detector (NASA)
• LTM — Like The Moon
• TSI — Total Solar Irradiance
• IRIS — InfraRed Imaging Surveyor
• SPB — Science Planning Branch
• ULX — Ultra-Luminous X-ray source
• DCA — Detector Control Assembly
• RSB — Research Support Branch
• WIYN — Wisconsin/Indiana/Yale/NOAO Telescope
• CMOS — Complimentary Metal Oxide Semiconductor
• ETR — Engineering Tape Recorder
• SAMPEX — Solar Anomalous And Magnetospheric Particle Explorer (spacecraft)
• WHDF — William Herschel Deep Field

• GRU — Ground Replaceable Unit
• SETG — Search for Extra-Terrestrial Genomes
• CC — Candidate Companion
• XRB — X-Ray Background
• PRR — preliminary requirements review
• TRB — Test Review Board
• TAI — International Atomic Time (Temps Atomique International) [to 2015 July 1st, 35s ahead of UTC; from 2015 July 1st, 36s ahead of UTC.]
• SVWG — Science Verification Working Group
• SUSI — Sydney University Stellar Interferometer
• AER — Astronomy Education Review
• BHC — Black Hole Candidate
• GCC — Globular Cluster Candidate
• SID — Software Implementation Directive
• BSS — Bigelow Sky Survey
• ASWG — ATST (Advanced Technology Solar Telescope) Science Working Group
• EED — Extracted Engineering Data
• IRAF — Image Reduction Analysis Facility
• MPEC — Minor Planets Electronic Circular
• FFD — First Fixation Duration
• MUSTANG — Multiplexed SQUID TES Array at Ninety GHz
• STAT — Space Telescope Astrometry Team
• WFPC2 — Wide Field Planetary Camera-2
• HAC — Huachuca Astronomy Club
• INFOL — Ingredient Necessary FOr Life
• CFHT — Canada-France-Hawaii Telescope
• NLST — National Large Solar Telescope
• FGC — Flat Galaxy Catalogue
• DDA — Division on Dynamical Astronomy
• VMO — Valley of the Moon Observatory
• WMAP — Wilkinson Microwave Anisotrophy Probe
• WDS — Washington Double Star Catalog
• BAV — Bundesdeutsche Arbeitsgemeinschaft fur Veraenderliche Sterne
• UAO — University of Arizona Observatories
• PGPLOT — FORTRAN subroutine library for plotting graphics
• INSY — International Near Space Year
• DS — Dwarf Star
• SDF — Science Data Formatter
• AUDS — ALFA Ultra Deep Survey
• TIB — Telescope Instrument Branch
• SDP — science data packet
• CSV — Catalog of Suspected Variables
• FEB — Falling-Evaporating Body
• VF — Variable Frequency
• OC — Open Cluster
• SXG — Spectrum-X-Gamma
• ENACS — ESO Nearby Abell Cluster Survey
• GHZ — Galactic Habitable Zone
• EO — Earth Observatory
• PPM — Positions And Proper Motions (catalog)
• IWCA — International Workshop on Cometary Astronomy

• EPD — Expected Planetary Differences
• NTR — Nuclear Thermal Rocket
• CEP — CEPheid
• GSP — General Support Pool
• LST — Large Stellar Telescope
• WMKO — W. M. Keck Observatory
• MUSES — MU Space Engineering Spacecraft
• WRO — Warren Rupp Observatory
• SGRA — School of Galactic Radio Astronomy
• LOTIS — Livermore Optical Transient Imaging System
• IPS — Inertial Pointing System
• DRD — Data Requirements Document
• SDAS — Scarborough And District Astronomy Society
• WASP — Wide Angle Search for Planets
• SMO — Servicing Mission Office
• WFMOS — Wide-Field Multi-Object Spectrograph
• TFOV — target field of view
• SDM — Secondary Deployment Mechanism
• NCSA — National Center for Supercomputer Applications (Urbana IL)
• ARTEMIS — Advanced Relay TEchnology MISsion
• SPIRIT — SPace InfraRed Imaging Telescope
• WFAU — Wide-Field Astronomy Unit
• MSO — Mount Stromlo Observatory
• PWHHO — Publications of West Hendon House Observatory, Sunderland
• LPCI — Lunar Phases Concept Inventory
• SSLB — Steady-State Leaky-Box
• MACO — Mars Atmospheric Constellation Observatory
• TBC — Time Base Correctors
• TSRS — Trieste Solar Radio System
• UGWZ — U Gem variable type star (WZ Sagittae sub-type)
• IETI — Invitation to ExtraTerrestrial Intelligence
• SSO — Special Studies Office
• MMF — Moving Magnetic Feature
• JKT — Jacobus Kapteyn Telescope
• STVSW — Space Telescope Verification Software
• TLP — The Lunascan Project
• EBA — Electronics Bay Assembly
• SER — Systems Engineering Report
• DRAO — Dominion Radio Astrophysical Observatory
• DIG — Dwarf Irregular Galaxy
• ARAS — Astronomical Ring for Access to Spectroscopy
• CCDS — Centers for the Commercial Development of Space
• DSN — deep-space network
• CIAO — Coronagraphic Imager with Adaptive Optics
• SPG — Special Projects Group
• WBFI — Wide Band Filter Imager
• LOFAR — Low Frequency Array
• CNES — Centre National d'Etude Spatiales
• CGCS — Cool Galactic Carbon Star
• SCP — Small Computer Systems Interface

• BCD — Basic Calibrated Data
• VSSC — Vikram Sarabhai Space Centre
• MPPG — Mars Program Planning Group
• QBSA — Quarterly Bulletin on Solar Activity
• AIM — Aeronomy of Ice in the Mesosphere
• SMM — Spectro-Mirror Mechanism
• SPSO — Science Program Selection Office
• AA — Academic Affairs
• HPR — Hardware Problem Report
• TAAA — Tucson Amateur Astronomy Association
• RSFC — Radially Stratified Flame Core
• ATLAS — Advanced Technology Large-Aperture Space Telescope
• XRF — X-Ray Flash
• SALT — South African Large Telescope
• VERA — VLBI Exploration of Radio Astrometry
• TLP — Transient Lunar Phenomenon
• GRAB — Galactic Radiation and Background
• VOS — Virtual Operating System
• OSS — Office Of Space Science (NASA)
• CGRO — Compton Telescope
• WXM — Wide-field X-ray Monitor
• SGD — Solar Geophysical Data
• BHAS — Black Hills Astronomical Society
• OPR — Operations Problem Report
• DOS — Degrees Of Separation
• IPE — Initial Pointing Error
• AOSS — AURA Observatory Support Services
• CHIP — Cosmic Hot Interstellar Plasma
• IRAM — Institut de Radio Astronomie Millimetrique
• IAPPP — International Amateur/Professional Photoelectric Photometry
• ODX — Occular Dynamic eXperiment
• HGD — Hot Gas Discharge
• BSG — Blue SuperGiant
• SPC — Short Period Comets
• STIS — Space Telescope Imaging Spectrograph
• WGSS — Working Group of Standard Stars
• IV — intra vehicular
• LS — List Star
• MBA — Main-Belt Asteroid
• HLC — Heavy Lift Capability
• PFR — Portable Foot Restraint
• MUF — Mysterious Unknown Force
• SMC — Standard Model of Cosmology
• SSDA — Solar System Data Archive
• LDS — Luyten Double Star
• ULYSSES — Ultraviolet LibrarY of Spectra for Star-forming Environments
• LMS — Lower Main Sequence
• OTS — Oasa Tamura Sugitani
• NSBD — Normal Stars and Brown Dwarfs
• IB — Interstellar Band

• WTTM — WIYN (Wisconsin, Indiana University, Yale University, and NOAO (National Optical Astronomy Observatories) Observatory) Tip-Tilt Module
• ULIRG — Ultraluminous Infrared Galaxy
• EC — Embedded Cluster
• PRB — Preliminary Review Board
• GMOS — Gemini Multi-Object Spectrographs
• NEAS — Near Earth Asteroids
• PWD — Pre-White Dwarf
• NSUM — Non-Spatial Universal Mechanics
• GKS — Graphic Kernel System
• SMS — Sun Moon and Stars
• WSO — World Space Observatory
• OBP — Onboard Processor
• OGLE — Optical Gravitational Lensing Experiment
• TAMS — Terminal-Age Main Sequence
• SCO — Software Change Order
• GPB — Group Parameter Block
• STARS — Seismic Telescope for Astrophysical Research from Space
• HSI — Host System Interface
• SAO — Swinburne Astronomy Online
• MOSS — Moving Object Support System
• MOMV — Manned Orbital Maneuvering Vehicle
• PNN — Planetary Nebula Nucleus
• SGC — Southern Galaxy Catalogue
• LWS — Long-Wave Spectrograph
• QHO — Quail Hollow Observatory
• SOFA — Selectable Optical Filter Assembly
• MOST — Molonglo Observatory Synthesis Telescope
• SUPARCO — Space & Uppar Atmosphere Research Commission
• RSG — Red Super Giant
• UVOT — Ultraviolet Optical Telescope
• SLS — Space Life Sciences
• SAD — Supra-Arcade Downflow
• VCC — Virgo Cluster Catalog
• VFIR — Very Far Infra-Red
• MFP — magnetic field perturbation theory
• ECA — Electronics Control Assembly
• NEAT — Near Earth Asteroid Tracking
• UMS — Upper Main Sequence
• US/PS — see PRESTO
• WHAC — West Hawaii Astronomy Club
• ECF — European Coordinating Facility
• STAN — Space Telescope Analysis Newsletter
• MPAS — Mornington Peninsula Astronomical Society
• LSB — Low Surface Brightness
• MRSR — Mars Rover and Sample Return
• DAG — Doğu Anadolu Gozlemevi
• SSG — Science Software Group
• FPAS — FPA Shroud
• ACK — acknowldgement message
• SSU — Steady State Universe

• SAR — Software Analysis Room
• SZE — Sunyaev-Zeldovich Effect
• DRAA — Durham Regional Astronomical Association
• SNU — Solar Neutrino Units
• FMS — forms management system
• PWLA — Portable Work Light Assembly
• EGP — Extrasolar Giant Planet
• LWP — Long Wavelength Primary
• CCSN — core-collapse supranovæ
• WYAS — West Yorkshire Astronomical Society
• SEP — System Enhancement Plan
• STFS — Space Telescope Flight Software
• OW — Outer Wall
• OAO — Okayama Astrophysical Observatory
• AOA — ASCA Online Arxiv
• IYA — International Year of Astronomy
• PBO — Pine Bluff Observatory
• EB — Eclipsing Beta
• SFN — Star Formation Newsletter
• PAR — Photon Activity Rate
• RS — Resource Scheduler
• GRS — Great Red Spot
• SXPHE — SX PhoEnicis
• IVC — Institute Visiting Committee
• MLPS — Mid-Latitude Plasma Structuring
• GC — Galactic Center
• STSWG — Space Telescope Science Working Group
• LMT — Large Millimeter Telescope
• SEA — Sensor Electronics Assembly
• PFM — Pre-Flight Module
• PACS — Photoconductor Array Camera and Spectrometer
• CCS — Cool Carbon Star
• CGCS — Catalogue of Galactic Carbon Stars
• ISSA — Infrared Sky Survey Atlas
• REM — Rat Enclosure Module
• MICO — Multi-year Interactive Computer Almanac
• PTF — Palomar Transient Factory
• DDF — Directors Discretionary Funds
• WBS — Wide Band Spectrometer
• ARGUS — Astronomical Research Group Under Stars
• WACL — Wide Angle Converter Lens
• NS — Neutron Star
• SRC — Science Research Council (formerly DSIR) (U.K.)
• UGZ — U Gem variable type star (Z Camelopardalis subtype)
• ADS — Aitken Double Stars
• SMA — Submillimeter Array
• EPOS — European Project on the Sun
• AP — Astral Projection
• LLNL — Lawrence-Livermore National Laboratory
• DMS — Daily Mission Schedule

• FIRST — Faint Images of the Radio Sky at Twenty-centimeters
• STAC — Space Telescope Advisory Council
• CVP — Continuously Variable Planetary
• WLWG — Weak Lensing Working Group
• L — Lagrange
• EVGA — European VLBI Group for Geodesy and Astrometry
• PDB — Project Data Base
• MOE — Moon Of Earth
• EOT — End Of Tape
• NEAF — North East Astronomy Form
• SLOWPOKES — Sloan Low-mass Wide Pairs of Kinematically Equivalent Stars
• AMSU — Advanced Mass Spectrometry Unit
• TARDIS — The Apparatus for Really Distant Interstellar Sojourns
• GGC — Giant Gravity Core
• SOB — Science Observatory Branch
• NFAR — Near Field Apertureless Raman
• LADC — Longitudinal Atmospheric Dispersion Compensator
• MMTF — Maryland-Magellan Tunable Filter
• SEP — Solar Energetic Particle
• BLAST — Balloon-borne Large Aperture Submillimeter Telescope
• BB — Black-body
• ATM — Amateur Telescope Making
• SHP — Standard Header Packet
• RCS — Readiness Control System
• MIPS — Multi-band Imaging Photometer
• WYBT — Whole Year Blazar Telescope
• PSS — Palomar Sky Survey
• LSA — Large Science Aperture
• PCAS — Planet-Crossing Asteroid Survey
• SCL — Service Control Level
• RTC — Researching The Cosmos
• NFF — New Firm Formation
• MUNICS — MUnich Near-Infrared Cluster Survey
• ILRT — intermediate-luminosity red transients
• ASCH — Alien Societies Culture And History
• RC — Ritchey-Chretien
• SSPS — Sky Survey Prototype System
• SCP — Science Data Analyst
• EDB — Engineering Data Base
• SCCCB — Science Computing Configuration Control Board
• HTFA — High Temperature Flowing Afterglow
• VST — VLT Survey Telescope
• PASA — Pan-Arab Space Agency
• VLM — Very Low Mass
• EOL — Earth Observing Laboratory (formerly ATD)
• ISGRI — INTEGRAL Soft Gamma-Ray Imager
• CMCC — Central Mission Control Centre
• TSS — Targeted Search System
• PNG — Planetary Nebulae, Galactic
• RSI — Research Systems, Inc.

• SDD — Single Dish Data
• BASIS — Burst and All-Sky Imaging Survey
• VTT — Vacuum Tower Telescope
• HRC — High Resolution Camera
• CIDA — Cometary Interplanetary Dust Analyzer
• CRBT — Cosmic Ray Background Test
• CSE — Circumstellar Envelope
• RSDP — Routine Science Data Processing
• N — Nova
• FSS — Flight Servicing System
• SBUV — Solar Blind Ultra- Violet
• PDS — Photometric Data Systems
• TAC — The Astronomy Connection
• CMF — Core Mass Function
• YS — Yellow Straggler
• NIP — Normal Incidence Point
• MPS — Microlensing Planet Search
• QPP — Quasi-Periodic Oscillation
• LTT — Luyten Two-Tenths
• DSO — Deep Space Object
• WDMF — White Dwarf Mass Function
• RS — Reed-Solomon error detection
• SWF — ShortWave Fading
• WFPC — Wide Field and Planetary Camera
• COHSI — Cambridge OH-Suppression Instrument
• DCL — Digital Control Language
• SFM — Super Full Moon
• SSA — Star Selector Assembly
• RAPT — Reynolds Amateur Photometry Team
• LDE — Long Duration Event
• ARAS — Armenian Astronomical Society
• WFPCII — Replacement For WFPC
• MRO — Mars Reconnaissance Orbiter
• LM — Low Mass
• AD — Astronomsko Drustvo
• FFI — Full Frame Image
• UXOR — UX ORionis objects
• SMASH — Survey of MAgellanic Stellar History
• HDF — Hubble Deep Field
• MHGL — Mexican Hat Gravitational Lens
• MPIA — Max Planck Institute for Astronomy
• SPYBAL — spectrum Y balance
• SWIRE — Spitzer Wide-area InfraRed Extragalactic survey
• TMN — Tokyo Meteor Network
• AZA — Analiza Zanieczyszczenia Atmosfery
• CST — Constant Strain Triangle
• GN — Galactic Nebula
• TDB — Barycentric Dynamical Time
• L — Luyten
• NDV — NASP Derived Vehicle

• JAC — Japan Astronomical Circular
• LHS — Luyten Half-Second
• ICET — International Center for Earth Tides
• WAT — Wide Angle Tail
• EFRF — Earth Fixed Reference Frame
• NDC — Network Data Center
• SB — Super Bright
• VRAM — Virtual Random Access Memory
• SIP — Software Implementation Plan
• NMW — Northern Milky Way
• SLSN-R — radioactively powered SLSNe
• EMB — Earth Moon Barycenter
• BO — Biological Origin
• VPC — viewport coordinates
• PASS — POCC Application Software Support
• ECO — Earth crossing object
• SARDS — Solar Active Region Display System
• SAOC — SAO Catalog
• WDM — Warm Dark Matter
• STS — Shuttle Transport System
• GRB — Gamma Ray Bursters
• SCAC — Science Computing Advisory Commitee
• BIMA — Berkeley-Illinois-Maryland Array
• EBL — Extragalactic Background Light
• BS — Burrell Schmidt telescope
• NGS — New Generation STAR
• NHICAT — Northern HIPASS CATalog
• SCCP — Sloan Computational Cosmology Project
• LIC — local interstellar cloud
• AN — Astronomische Nachrichten
• CES — Central Electromagnetic Shower
• WUVC — Wezen Updated Variability Catalogue
• LOFAR — Low-Frequency Array
• SZA — Sunyaev-Zeldovich Array
• SF — Star Field
• SDS — Star Diagnosis System
• LSG — Liaison Scientists Group
• SS — Symbiotic Star
• CP — Chemically Peculiar
• SSS — SuperCOSMOS Sky Surveys
• SF — Star Formation
• LTP — Lunar Transient Phenomenon
• SDSSP — Sloan Digital Sky Survey provisory
• WBS — Work Breakdown Schedule
• WSF — Wake Shield Facility
• BOSS — Bullet Of Super Speed
• AH — ampere hours
• CODE — Creation Out of Deep Energy
• ALIS — Airborne Laser Isotope Spectrometer
• MPP — multi-pinned phase

• LAL — LALande
• RTA — Real Time Activity
• HRD — Hertzsprung-Russell Diagram (astronomy)
• RSS — Rotating Service Structure
• FAT — Filtered Array Technology
• SS — Shooting Stars
• IMOA — International Museum of Astronomy
• RDI — Radiation Driven Implosion
• RCI — Rodent Cage Interface
• TAOS — Taiwan American Occultation Survey
• BLG — bulge
• DN — Data Number
• UHTC — Ultra High Transmission Coatings (Meade)
• CAMC — Carlsberg Automatic Meridian Circle
• COD — Carbon Oxygen Dwarf
• SSB — Science Software Branch
• SARA — Sub-KeV Atom Reflection Analyzer
• HSC — Hierachical Storage Controller
• VPO — VISTA Project Office
• SIS — Superconductor-Isolator-Superconductor
• VVS — Vereniging voor Sterrenkunde
• NSAS — Northern Skies Astronomical Society
• SSC — STEIS Steering Committee
• SSB — Space Science Board (NRC)
• IAUC — IAU Circular
• SAS — Space Activity Suit
• RSN — Radio SuperNova
• MDB — multiplexed data bus
• SIRA — Solar Imaging Radio Array
• GTC — Gran Telescopio Canario
• WFAP — Wide Field Astronomy Panel
• TDT — Terrestrial Dynamical Time
• LGS — Local Group Survey
• UMP — Ultra Metal-Poor
• CBP — Collateral Benefits Plan
• ECA — Earth-Crossing Asteroid
• PM — Primary Mirror
• MWD — Magnetic White Dwarf
• URO — Unidentified Red Object
• SLSN-I — hydrogen-poor SLSNe
• PGC — Principal Galaxy Catalog
• LMC — Large Magellanic Cloud
• SAM — Super Active Matter
• NIR — Near Infrared Research
• BD — Brown Dwarf
• BHH(S) — Black Hole(s)
• MPP — Multi-Pinned-Phase
• OSG — Observatory Support Group
• NCP — North Celestial Pole
• NAIC — National Astronomy And Ionosphere Center

• MJ — Mass of Jupiter
• TSS — Texas supernova survey
• JSGA — Japan Spaceguard Association
• HMSF — High Mass Star Formation
• JFC — Jupiter Family Comets
• RTPW — Rapid True Polar Wander
• BF — Broadening Function
• SDOR — S DORadus
• DE — Detector Efficiency
• MARS — MOUNTAIN ASTRONOMICAL RESEARCH SECTION
• WAC — Wide Angle Converter
• STEPS — STEllar Planet Survey
• UBV — Ultraviolet Blue Visual photometry
• NT — Non-Thermal
• SIDS — SI Detector System
• DE — Dwarf elliptical
• CCAS — Cape Cod Astronomical Society
• UGC — Upsala General Catalog
• SN — Signal-to-Noise
• SLSN-II — hydrogen-rich SLSNe
• ICV — Illumination Chromacity Variation
• EL — Enlarging Lens
• TAL — Transatlantic Landing
• SM — Safe Mode
• CRAF — Committee on Radio Astronomy Frequencies
• CTA — Computer Technology Associates (GSFC)
• RMO — Rattlesnake Mountain Observatory
• AC — Active Coronae
• TLE — Total Lunar Eclipse
• NBS — Next Bright Star
• TESS — Transiting Exoplanet Survey Satellite
• MR — Moonlight Rising
• TAA — Tasmanian Amateur Astronomers
• IAU — International Astrophysical Union
• WAVE — Wide Area Vertical Expansion
• TAL — Teleskop Astronomi Lyubitel
• F — Fraunhofer lines
• LTSA — Long-Term Space Astrophysics
• CSF — Clustered Star Formation
• TTS — T Tauri Star
• NIR — Near Infrared Reflection
• ADH — Average Daily Hours
• OST — Observation Sequence Table
• NVR — nonvolatile residue
• RX — ROSAT X-ray
• FIMS — Fors Instrumental Mask Simulator
• OZ — Objective Zenith
• ISPP — In-Situ Propellant Production
• CMD — Color-Magnitude Diagram
• HR — Hertzsprung-Russell

• CA — Coronagraphic Apodizer
• CASA — Common Astronomy Software Applications
• CIO — Catalog of Infrared Observations
• GU — Galactic Unit
• MKN — Markarian (celestial object)
• RCB — R Coronae Borealis
• EBL — Everything But Light
• RSA — Revised Shapley-Ames
• NGT — Next Generation Telescope
• CMA — Canis Majoris A
• PRE — Photospheric Radius Expansion
• LPC — Long Period Comets
• RE — ROSAT (ROentgen SATellite) EUV (Extreme Ultra-Violet)
• LDE — Long Decay Event
• SRS — Southern Reference Star
• CCF — Cosmogenic Correlation Factor
• PMS — Pre–Main Sequence
• AH — Asteroid Hunt
• ABF — Astronomische Beeldverwerkings Faciliteiten
• SPARC — Space Physics Aeronomy Research Collaboratory
• CT — Cerro Tololo
• IPC — Inter Planetary Commission
• OAD — Office for Astronomy Development
• IG — Inter-Galactic
• NGP — North Galactic Pole
• ULD — Ultra-wide Low- Distortion lens
• NSA — Neutron Star Atmosphere
• MGC — Millennium Galaxy Catalogue
• ORI — Orbit Replaceable Instrument
• RV — Radius of Venus
• TTOC — Tape Table of Contents
• ING — imagining new gastronomy
• B — Barnard
• VPO — Virtual Public Observatory
• COL — Collinder catalog
• MOM — Mars Orbiter Mission
• SAM — Sample Analysis of Mars
• PO — Primary Object
• OHD — Observational Hubble-parameter Data
• LDN — Lynds Dark Nebulae
• BY — BY Draconis
• RC — Red Clump
• OASI — Orwell Astronomical Society (Ipswich)
• HCD — High Consistency Discharge
• APS — Astronomy & Planetary Science
• PET — Peak Ejection Time
• UEF — Unidentified Energy Factor
• APT — Astronomers Proposal Tools
• NS — Nearby Star
• ♁ — Earth

• IAS — Indiana Astronomical Society
• EFR — Emerging Flux Region
• WCT — Window Correction Table
• OSC — Orbital Sciences Corporation
• HMC — Halley Multicolor Camera
• IO — Interacting Object
• PLS — Palomar-Leiden Survey
• CRTS — Catalina Real-Time Transient Survey
• TIM — Telescope Image Modeling
• COT — Check-Out on Type
• SH — Super Hot
• SIPS — Spectral Image Processing System
• MAS — milliarcsecond
• MOST — Microvariability and Oscillations of STars Telescope
• CSM — Central Star Magnitude
• SEP — South Ecliptic Pole
• CSI — Catalog of Stellar Identification
• OWL — Orbiting Wide-angle Light-collectors
• NC — Numerical Cosmology
• FCC — Fornax Cluster Catalog
• VBT — Vainu Bappu Telescope
• VLR — Very Low Resonance
• ODI — One Degree Imager
• EF — Event Foreground
• TO — Texas Instruments
• MS — Main Sequence
• SDH — science data header
• TAC — Twin Astrograph Catalog
• EGGR — Eggen & Greenstein
• SE — Solar Empire
• SGP — South Galactic Pole
• MS — Millions of Stars
• SSS — Solar Single Scattering
• IFO — Identified Flying Object (see Also UFO)
• WAA — Washington Area Astronomers
• GRB — Gamma Ray Blast
• RMS — Republic Management Systems, Inc.
• CHSS — Century Halo Star Survey
• PDQ — PODPS Data Quality
• SSA — Small Science Aperture
• FOP — Friends Of Phobos
• HMS — High Mass Star
• SLSNE — superluminous supernova events
• SF — Surface Features
• SSE — Star Selector Encoder
• CVA — Central Valley Astronomers
• NA — Negative Alignment
• WLM — Wolf-Lundmark-Melotte Galaxy
• BS — Bica and Schmitt
• FU — Forces Unknown

• ISV — Inter-Stellar Void
• R — Ray
• MRK — Markarian (celestial object)
• LAS — Laboratoire Astronomie Spatiale
• NSC — Nuclear Star Clusters
• MMA — Milli Modulation Amplitude
• CME — Coronal Mass Ejections
• RTO — Real-Time Operation
• DRO — Distant Retrograde Orbit
• ZAC — Zenith Azimuth Coordinates
• GTL — Geometric Time Leverage
• CFS — Chandrasekhar - Friedmann - Schutz instability
• PLANET — Probing Lensing Anomalies NETwork
• SCE — SPACECRAFT COMMAND ENCODER
• MI — Maximum Influence
• HRG — Hertling Ring Galaxy
• HS — horizontal system
• RU — Radius of Uranus
• SCP — Single Color Photometry
• TALC — The Astronomy Learning Center
• GT — Galaxy Tour
• RTB — Return to Brightest
• TMC — Telescope Makers Convention
• RFO — Robert Ferguson Observatory
• MSC — Mission Support Calibration
• WUPPE — Wisconsin Ultraviolet PhotoPolarimter Experiment
• LB — Long Base
• MG — Meteor Garden
• SC — Star Cluster
• SD — Subdwarf
• OBD — Orbiting Brown Dwarf
• OBS — Orbiting Brown-dwarf Star
• WLM — Wolf-Lundmark-Melotte
• GCI — geocentric intertial
• SFAC — Santa Fe Astronomy Club
• SHL — Science Header Line
• SPD — Southern Polar Distance
• UT — Universityrsal Time
• WFC — Wide-Field Channel
• SS — Star Selector
• NI — Non-Impact
• VMC — Velocity Modulating Camera
• FR — Fanaroff-Riley
• SIM — Star in Motion
• BE — Bright Elements
• JC — Jupiter Crosser
• SCR — SuperCOSMOS-RECONS
• GR — Galactic Rotation
• URP — Uranian Ring Plane
• SSM — System Support Module

• MOST — Microvariability Oscillations of STars
• TO — Telescope Operator
• ZM — Zerkalnyi Mirror
• SSF — Space Station Fred
• SG — Star Graph
• RCI — Rocket Consortium Interstellar
• ALFA — A Laser For Astronomy
• GAM — Global Astronomy Month
• PLE — Partial Lunar Eclipse
• USB — User Support Branch
• JCT — Jordan Cosmological Theory
• NSV — New Suspected Variable
• MM — Missing Mass
• CNS — Central Navigation System
• CALL — Collaborative Asteroid Lightcurve Link
• O — Occult
• TIL — Transequatorial Interconnecting Loop
• CP — Cambridge Pulsar
• IPN — InterPanetary Internet
• GASP — GSSS Archive Support Project
• R — Rayleigh
• CG — Central Galaxy
• GB — Guide Brightness
• MD — Matter Dominated
• NPC — Nice Planetary Contrast
• AM — Anti-meridian
• TT — Transit Traverse
• PX — Planet Xtraterrestrial
• BM — Blue Moon
• RN — Reflection Nebulosity
• NSA — National Society of Astronomy
• USS — Unusual Star Shape
• MR — Measurement of Red
• MS — Morning Star
• MP — Massive Protostar
• NA — Non-Anomalous
• FP — Frozen Planet
• PC — Planetary Contrast
• SIP — Space Interested Person

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