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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
• PPNE — Proto-Planetary Bebulae
• HIV — Human Immunodeficiency Virus I
• N/A — Not Applicable
• PNX — Pulsar Network Exchange
• MADOO — Madras Observatory Astronomical Observations
• ETA — Estimated Time of Arrival
• URL — Universal Resource Locator
• LUNNO — Lunar Upper Navigation Nacelle Orb
• HIPAA — Health Insurance Portability and Accountability Act of 1996
• ROM — Read-Only Memory
• FTP — File Transfer Protocol
• LASER — Light Amplification By Stimulated Emission Of Radiation (cf. Maser)
• A&AT — Astronomical and Astrophysical Transactions
• ANSI — American National Standards Institute, Inc.
• ASAP — As Soon As Possible (pronounced AY-sap)
• WAXD — Wide-Angle X-Ray Diffraction
• BTW — By The Way
• PIFOV — Planet In Field Of View
• A&ARV — Astronomy and Astrophysics Review
• B-V — Binary - Variable star
• MM — Millimeter
• ICD — Interface Control Document
• PPM — parts per million
• AHRQ — Agency for Health, Research, and Quality
• E&PSL — Earth and Planetary Science Letters
• ROM — Rough Order of Magnitude
• CPU — Central Processing Unit
• P&SS — Planetary and Space Science
• A — Ampere
• ZAND — Z ANDromedae
• JAAVSO — Journal of the American Association of Variable Star Observers
• COB — close of business (End of duty day)
• R&QA — Reliability & Quality Assurance
• FIFO — First In, First Out
• WHO — World Health Organization
• ZEPLIN — ZonEd Proportional scintillation in LIquid Noble gases
• ☿ — Mercury
• QJRAS — Quarterly Journal of the Royal Astronomical Society
• M&PS — Meteoritics and Planetary Science
• PDR — Preliminary Design Review
• XEUS — X-Ray Evolving Universe Spectroscopy Mission
• QC — Quality Control
• E-ELT — European Extremely Large Telescope
• JASEG — Journal of the Astronomical Society of Egypt
• CDR — Critical Design Review
• DAOAR — Dominion Astrophysical Observatory Annual Report
• IP — Internet Protocol
• RFP — Request For Proposal

• P/SOS — Payload/Spacecraft Operations Simulator
• P-E — Perkin-Elmer Corporation
• SADE-1 — Solar Array Deploy Electronics-11
• JAPAS — Journal of Astrophysics and Astronomy Supplement
• WASOA — Washburn Observatory Astrophysics
• ISO — International Organization for Standardization
• SAAOC — South African Astronomical Observatory Circular
• PALLO — Publications of the Allegheny Observatory of the University of Pittsburgh
• ASTM — American Society for Testing and Materials (Philadelphia, Pennsylvania)
• AIAA — American Institute of Aeronautics and Astronautics, Inc.
• BAICZ — Bulletin of the Astronomical Institutes of Czechoslovakia
• F&CRE — Flower and Cook Observatory Reprints
• PABEI — Progress in Astronomy
• NHLBI — National Heart, Lung, and Blood Institute
• CY — Calendar Year
• RF — Radio Frequency
• JALPO — Journal of the Association of Lunar & Planetary Observers
• CV — Curriculum Vitae
• VATOP — Vatican Observatory Publications
• AFAIK — As Far As I Know
• MOA — Memorandum Of Agreement
• MOU — Memorandum of Understanding (an MOU between Food & Drug Administratin and a regulatory agency in another country allows mutual recognition of inspections)
• LAMOST — Large sky Area Multi-Object fiber Spectroscopic Telescope
• AA&AA — Astronomy and Astrophysics Abstracts Heidelberg
• MADOB — Madras Observatory Observations
• BTU — British Thermal Unit
• WWW — World Wide Web
• PADEU — Publications of the Astronomy Deparment of the Eotvos Lorand University
• EST — Eastern Standard Time
• CCB — Configuration Control Board
• EAPSNET — East-Asian Planet Search Network
• LAD-C — Large Area Debris Collector
• ASCII — American National Standard Code for Information Interchange
• R&D — Research & Development
• EEO — Equal Employment Opportunity
• COBRAS-SAMBA — Cosmic Background Radiation Anisotropy Satellite / Satellite for Measurement of Background Anisotrop
• JAPOA — Japan Amateur Photoelectric Observers Association
• UFO — Unidentified Flying Object
• MTBF — Mean Time Before Failure
• CSA — Canadian Space Agency
• S/N — Serial Number
• NCCLS — National Committee for Clinical Laboratory Standards
• DEC — Digital Equipment Corporation
• SAR — Search And Rescue
• AHU — Air Handling Unit
• FYI — For Your Information
• ADP — Automated Data Processing
• CBO — Congressional Budget Office
• ROI — Region of Interest
• ESA — European Space Agency

• MRI — Magnetic Resonance Imaging
• O&M — Operation and Maintenance
• GATT — General Agreement on Tariffs and Trade (government)
• GPS — Global Positioning System (ex-NAVSTAR)
• FAQ — Frequently Asked Questions (sometimes Pronounced Fak)
• CD — Compact Disc
• DOT — Department of Transport
• FOV — Field Of View (satellite)
• MRB — Material Review Board
• RPM — Revolutions Per Minute, (Rotations Per Minute)
• PPO — Preferred provider organization
• EU — European Union (1994; formerly referred to as the EEC or EC)
• CKSM — checksum
• MIS — Management Information System (OSHA)
• EOF — End Of File
• HMO — Health Maintenance Organization
• NFS — Network File System
• FORTRAN — FORmula TRANslation (a computer language)
• DOD — United States Department of Defense
• RAM — random-access memory
• CRT — Cathode Ray Tube (type of TV)
• TBD — To Be Determined
• FY — Fiscal Year
• CRS — Congressional Research Service
• APU — Auxiliary Power Unit
• MB — Megabyte
• NM — Nanometer
• DD — Deputy Director
• WAN — Wide Area Network
• SOW — Statement Of Work
• AARP — American Association of Retired Persons
• GMP — Good Manufacturing Practice
• GO — General Observer
• LTE — Local Thermodynamic Equilibrium
• MPH — Miles Per Hour
• CRO — Contract Research Organization
• SQA — Software Quality Assurance
• QA — Center for Quality Assurance in International Education
• ELV — Expendable Launch Vehicle
• COSPAR — Committee on Space Research (ICSU)
• SDD — Software Design Document
• USAF — United States Air Force
• OPD — Outpatient Department
• ROI — Return on Investment
• IFOV — Instantaneous Field Of View
• AU — Astronomical Unit
• CFR — Code of Federal Regulations
• AAS — American Astronomical Society
• DCC — Document Control Center
• FDA — Food Drug Administration

• OAI — Official Action Indicated (serious Food & Drug Administration post-inspection classification)
• PT — Physical Therapy
• DME — Durable Medical Equipment
• LOE — Level Of Effort
• SCSI — Small Computer System Interface
• MHZ — Megahertz (Megacycles Per Second)
• DOE — United States Department of Energy (government)
• KG — Kilogram
• AMA — American Medical Association
• DMSP — Defense Meteorological Satellite Program (U.S.)
• STS — Space Transportation System
• VHF — Very High Frequency
• CM — Centimeter
• FFT — Fast Fourier Transform
• DDL — Data Definition Language
• NEC — National Electrical Code
• NSO — National Solar Observatory
• CEN — Committee European de Normalisation
• LOS — Line Of Sight
• BPS — bits per second
• DOMSAT — Domestic Communications Satellite System
• DC — Direct Current
• ADS — Astrophysics Data System
• JAXA — Japan Aerospace Exploration Agency
• EDT — Eastern Daylight Time
• HCFA — Health Care Financing Administration
• NIST — National Institute of Standards and Technology
• NAM — National Association of Manufacturers
• SISEX — Shuttle Imaging Spectrometer Experiment
• NIOSH — National Institute for Occupational Safety and Health
• BHB — Black Hole Bang
• FTA — Fault Tree Analysis
• LEO — Low Earth Orbit (satellite communications)
• FTE — Full-Time Employee
• LED — law enforcement desk; light emitting diode
• OMB — Office of Management and Budget (U.S.)
• CRF — Case Report Form
• UTC — Coordinated Universal Time
• 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
• SIR — Shuttle Imaging Radar
• HQ — Headquarters (HDQ Preferred)
• AAAS — American Association for the Advancement of Science
• PSI — Pounds Per Square Inch (Static Pressure)
• BOD — Board of Directors (Budget)
• HZ — cycles per second (hertz)
• EOY — End-Of-Year
• FTC — Federal Trade Commission (U.S.)
• TLA — Three Letter Abbreviation
• ACS — American College of Surgeons
• NAS — United States National Academy of Sciences

• UHF — Ultra High Frequency (300-3000 MHz; 1m-10cm)
• A/N — Alphanumeric
• STR — Software Test Report
• ACE — Advanced Composition Explorer
• PHP — Planetary Horizontal Platform
• NSF — National Sanitation Foundation
• HR — HUMAN RESOURCES
• TV — Television
• OSHA — Occupational Safety and Health Act (1970)
• ISRO — Indian Space Research Organisation
• ADF — Astrophysics Data Facility
• CM — Configuration Management
• 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.
• I/O — Input/Output
• OSO — Orbiting Solar Observatory
• HOPPS — Hospital Outpatient Prospective Payment System
• GIF — Graphic Interchange Format
• NEMA — National Electric Manufacturer's Association
• AAMC — American Association of Medical Colleges
• NIH — NATIONAL INSTITUTE OF HEALTH
• PM — Project Manager
• AAMI — Association for the Advancement of Medical Instrumentation
• NSA — National Security Agency
• GAO — Government Accountability Office [formerly the General Accounting Office]
• SIG — Special Interest Group
• NOAA — National Oceanic and Atmospheric Administration (US)
• BMA — British Medical Association
• ACRIM — Active Cavity Radiometer Irradiance Monitor (EOS)
• CRC — Contrôle de Redondance Cyclique (French: Cyclic Redundancy Check)
• CASE — computer-automated software engineering
• CAP — College of American Pathologists
• M — Meter
• BCD — Binary-Coded Decimal
• RFI — Radio Frequency Interference
• BER — Bit-Error Rate
• CPI — Continuous Process Improvement
• ISS — International Space Station
• HEAO — High Energy Astronomy Observatory
• WMO — World Meteorological Organization (ICSU)
• GMT — Greenwich Mean Time (Zulu)
• RISC — Reduced Instruction Set Computer
• IEEE — Institute of Electrical and Electronic Engineers, Inc.
• AMU — Atomic Mass Unit
• PAH — Polycyclic Aromatic Hydrocarbon
• GE — General Electric American Communications Inc.
• OS — Operating System
• ISF — Industrial Space Facility
• BUBES — Bulletin of the University of Besancon Observatory
• KHZ — kilohertz (1000 cycles per second)
• HHS — Health and Human Services Department

• POS — Point of Service Plan
• DBMS — Data Base Management System
• NASDA — National Space Development Agency of Japan
• DMA — direct memory access (computer term)
• BAT — Burst Alert Telescope
• SN — Space Network
• K — Kilo-
• COMSP — Commercial Space
• JPL — Jet Propulsion Laboratory (California Institute of Technology) (NASA)
• BAE — British Aerospace Systems, LTD
• IR — Infrared
• COTS — Commercial Off the Shelf Software
• NAI — No Action Indicated (Most Favorable Food & Drug Administration Post-inspection Classification)
• AHA — American Hospital Association
• NIST — National Institute of Standards & Technology (US)
• NAFTA — North American Free Trade Agreement
• 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
• EOL — End Of Line
• CCTV — Closed Circuit Television
• BNSC — British National Space Centre
• EDO — Extended Duration Orbiter
• AOCS — Attitude and Orbit Control System
• ISO — Infrared Space Observatory
• HV — High Voltage
• RMS — root mean square (preferred over "RMS")
• MMS — Module Management System
• CITECH — Center for Information on Technology in Healthcare
• NBS — National Bureau of Standards (US)
• IEC — International Electrotechnical Commission
• MS — Millisecond
• IRB — Institutional Review Board
• CW — Clockwise
• JSC — Johnson Space Center (Houston, TX)
• SPR — Software Problem Report
• SNR — Signal-to-Noise Ratio
• CDRH — Center for Devices and Radiological Health (Food & Drug Administration)
• USGS — United States Geological Survey (DOI)
• ISAS — Institute of Space and Astronautical Sciences (Japan)
• ASQ — Alpha System Qualification
• ADC — Analog-Digital Converter
• SSI — Space Studies Institute
• PR — Public Relations
• APS — American Physical Society
• HF — High Frequency
• LANL — Los Alamos National Laboratory
• FAR — Flight Acceptance Review
• APO — Apache Point Observatory
• SF — Science Fiction
• NRC — National Response Center
• FOS — Faint Object Spectrograph

• FAC — Facilities
• OTA — Optical Telescope Assembly
• RAS — Royal Astronomical Society
• IIRC — If I Recall Correctly
• DIST — Distance
• CHSAJ — Chinese Society of Astronautics Journal
• AJ — Astronomical Journal
• LOR — Lunar Orbit Rendezvous
• ROTFL — Roll On The Floor Laughing
• COBE — Cosmic Background Explorer Satellite (NASA)
• A&A — Astronomy and Astrophysics
• TAG — Technical Advisory Group for Biological Control Agents of Weeds
• MSFC — Marshall Space Flight Center (Huntsville AL)
• RSN — Real Soon Now [which may be a long time coming]
• UV — Ultraviolet (Light)
• CG — Center of Gravity (DXS)
• RSA — Russian Space Agency
• VLF — Very Low Frequency
• CSTC — Consolidated Space Test Center
• DAR — Defense Acquisition Regulation
• DRS — Data Relay Satellite
• CCAFS — Cape Canaveral Air Force Station, an air force base in Florida where NASA launches satellites from.
• ARC — Ames Research Center (NASA)
• JILA — Joint Institute for Laboratory Astrophysics
• UCL — University College London
• IAU — International Astronomical Union
• SARA — Society of Amateur Radio Astronomers
• ESTEC — European Space Research and Technology Centre
• BBF — Bursty Bulk Flow
• CEMDA — Celestial Mechanics and Dynamical Astronomy
• A&G — Astronomy and Geophysics
• ADA&A — Advances in Astronomy and Astrophysics
• UPS — Uninterruptible Power Supply
• CHJAA — Chinese Journal of Astronomy and Astrophysics
• GMT — Giant Magellan Telescope
• DSN — Deep Space Network - network of large antennas and communication facilities.
• SAS — Small Astronomy Satellite
• WG — Working Group
• ADIL — Astronomy Data Image Library
• ERBS — Earth Radiation Budget Satellite
• SME — Solar Mesosphere Explorer
• CDM — Cold Dark Matter
• ATO — Abort To Orbit
• AGB — Asymptotic Giant Branch
• HP — Hewlett Packard's
• ASTHE — Astronomical Herald
• N — Newton
• BASD — Ball Aerospace Systems Division
• ABBOO — Abbadia Observatory Observations
• GR — General Relativity

• ALEXIS — Array of Low Energy X-ray Imaging Sensors
• LOI — Lunar Orbit Insertion
• COCAM — Contributions from the Cambridge Observatory England
• FM — Flight Model
• NASP — National Aerospace Plane
• M&P — Materials and Processes
• RADAR — RAdio Detection And Ranging
• RTG — Radioisotope Thermoelectric Generator
• LARC — Langley Research Center (NASA)
• AURA — Association of Universities for Research in Astronomy, Inc.
• LBNL — Lawrence Berkeley National Laboratory (US)
• MITI — Ministry of International Trade & Industry (Japan)
• USP — United States Pharmacopeia
• 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)
• DFRC — Dryden Flight Research Center
• NRL — Naval Research Laboratory
• ASM — American Society for Microbiology
• MECO — Main Engine Cutoff
• SVD — Singular Value Decomposition
• PPARC — Particle Physics and Astronomy Research Council
• WP — Work Package
• ASI — Agenzia Spaziale Italiana
• CFA — Harvard-Smithsonian Center for Astrophysics, USA
• EC — European Community
• DSMB — Data Safety Monitoring Board
• DUNRE — Dunsink Observatory Reprints
• 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
• ESAJ — European Space Agency Journal
• FAT — File Allocation Table
• IPAC — Infrared Processing and Analysis Center
• SCA — Shuttle Carrier Aircraft
• ASC — Ambulatory Surgery Center
• NORAD — North American Air Defense (Command)
• CHJSS — Chinese Journal of Space Science
• CCD — Charge Coupled Device - a device for the movement of electrical charge.
• CHARA — Center for High Angular Resolution Astronomy
• AGU — American Geophysical Union
• PDP — Postinsertion Deorbit Preparation
• AE — Adverse Event
• CASS — Center for Advanced Space Studies
• PCM — Pulse-Code Modulation
• CHSST — Chinese Space Science Technology
• SRL — Space Radar Laboratory
• VBR — Variable Bit Rate (ATM)
• NASA — National Aeronautics and Space Administration (US)
• NSSDC — National Space Science Data Center (Greenbelt, MD)
• ALS — Advanced Launch System
• DDCMP — Digital Data Communications Message Protocol
• BAO — Beijing Astronomical Observatory
• FD — Flight Day

• ANOLL — Annals of the Private Observatory of Lucien Libert
• NABR — National Association for Biomedical Research
• MOSPO — Mobile Satellite Photometric Observatory
• ORIG — Origin
• OSSE — Oriented Scintillation Spectrometer Experiment
• ROSAT — Roentgen Satellite
• AG — Astronomische Gesellschaft
• JSAR — Journal of Space Astronomy Research
• FF — Flat Field
• DEC — Declination
• APJS — Astrophysical Journal Supplement Series
• N — Nitrogen
• WET — Whole Earth Telescope
• OIG — Office of Inspector General
• RCS — Radar Cross Section
• FU — Flight Unit
• FITS — Flexible Image Transport System
• GSFC — Goddard Space Flight Center (Greenbelt, MD)
• TAC — Telescope Allocation Committee
• PHRMA — Pharmaceutical Research and Manufacturers of America (formerly PMA, Pharmaceutical Manufacturers Association)
• BTOK — Bulletin of the Tokyo Astronomical Observatory
• ASTRA — Advanced Star Tracker
• BAA — British Astronomical Association
• CO — Contracting Officer
• HTH — Hope This Helps. Email abbreviation when replying to requests. Potentially counter-productive if the recipient doesn't understand what it means...
• SRM — Solid Rocket Motor
• SEDS — Students for the Exploration and Development of Space
• ST — Space Telescope
• CHIPS — Cosmic Hot Interstellar Plasma Spectrometer
• DUNOP — Dunsink Observatory Publications
• EUVE — Extreme Ultraviolet Explorer (NASA Satellite)
• ADS — Astrophysics Data Service
• KB — Kilobyte: One thousand and twenty-four bytes kbps kilo bit per second
• F — Degrees Fahrenheit
• ND — NASA Document
• DSCS — U.S. Defense Satellite Communications System
• FHST — fixed-head star tracker
• NDA — New Drug Application
• D — Director
• MIT — Massachusetts Institute of Technology (U.S.)
• ESRO — European Space Research Organisation
• DFRF — Dryden Flight Research Facility
• AMPS — Atmospheric Magnetospheric Plasma System
• NOAO — National Optical Astronomy Observatories (Tucson, AZ)
• SI — Scientific Investigation
• HD — Hilary Duff
• MCC — Mission Control Center (JSC)
• CASJ — Canadian Aeronautics and Space Journal
• ANS — Astronomical Netherlands Satellite
• KSC — John F. Kennedy Space Center

• PDS — Planetary Data System
• ASA — Astronomical Society Of The Atlantic
• GHZ — Gigahertz
• MOL — Manned Orbiting Laboratory
• D — Diameter
• BASBR — Bulletin of the Astronomical Society of Brazil
• LCC — Launch Control Center (KSC)
• RVU — Relative Value Unit
• JOP — Jupiter Orbiter Probe
• SIM — Simulator
• ASRM — Advanced Solid Rocket Motor
• AMS — American Meteor Society
• ISU — International Space University
• DIN — Deutsches Institut für Normung.
• ISO 14155 — Current Widely Accepted Standard
• VSOP — VLBI Space Observatory Program
• ERS — Earth Resources Satellite
• CRB — Change Review Board
• ARMOL — Armagh Observatory Leaflet
• DOH — Department of Health (various countries)
• WGPSN — Working Group for Planetary System Nomenclature
• JAMA — Journal of the American Medical Association
• FRR — Flight Readiness Review
• ABHI — Association of British Health-Care Industries
• MGMA — Medical Group Management Association
• MMDA — Michigan Medical Device Association
• ASCA — Advanced Satellite for Cosmology & Astrophysics
• LPL — Lunar and Planetary Laboratory
• PROM — Programmable Read-Only Memory
• CPI — characters per inch
• IDE — Investigational Device Exemption
• AAVSO — American Association of Variable Star Observers
• CHIME — College of Healthcare Information Management Executives
• ST — Star Tracker
• TM — Telemetry
• PR — Problem Report
• VLSI — Very-Large-Scale Integration
• ESO — European Southern Observatory
• CADC — Canadian Astronomy Data Centre
• DEACO — Dearborn Observatory Contributions
• IPA — Individual Practice Association
• JANSC — Journal of Astronautical Sciences
• BLOB — Binary Large Object
• GEM — Giotto Extended Mission
• ASHP — American Society of Hospital Pharmacists
• CMB — Cosmic Microwave Background
• SUMS — Shuttle Upper Atmosphere Mass Spectrometer
• IUS — Inertial UPper Stage (was Interim UPper Stage)
• MASER — microwave amplification by stimulated emission of radiation
• CSA — Canadian Standards Association (like UL)

• ESDAC — European Space Data Center
• MTPE — Mission To Planet Earth
• LMSS — Lunar Mapping and Survey System
• AOA — Angle Of Attack
• MMI — Man-Machine Interface
• VMS — Virtual Memory System
• IRSA — Infrared Science Archive
• RTLS — Return To Launch Site
• APL — Applied Physics Laboratory (at Johns Hopkins)
• DAO — Dominion Astrophysical Observatory (Victoria, BC, Canada)
• MOA — Microlensing Observations in Astrophysics
• NEODYS — Near Earth Objects Dynamic Site
• DMERC — Durable Medical Equipment Regional Carrier
• SST — States Supersonic Transport
• SERC — Science and Engineering Research Council
• PHS — Public Health Service (U.S.)
• WAIS — Wide Area Information Server
• ALPO — Association of Lunar and Planetary Observers
• LHEA — Laboratory for High Energy Astrophysics
• AO — Adaptive Optics
• GCP — Good Clinical Practice
• DYERE — Dyer Observatory Reprints
• SLAR — Side-Looking Airborne Radar
• IUE — International Ultraviolet Explorer
• AFSD — Air Force Space Division
• AXAF — Advanced X-Ray Astrophysics Facility
• INS — Inertial Navigation System
• JAC — Joint Astronomy Centre
• ETLA — Extended Three Letter Acronym
• CMP — Competitive Medical Plan
• USRA — Universities Space Research Association
• SIDC — Sunspot Index Data Center
• IOTA — International Occultation Timing Association
• SAR — synthetic aperture radar (satellite)
• LSF — Line Spread Function
• COWRO — Contributions from the Wroclaw Astronomical Observatory
• CASJQ — Canadian Aeronautics and Space Journal Quarter
• KM — Kilometer (1,000 meters)
• MEM — Meteoroid Exposure Module
• GOES — Geostationary Operational Environmental Satellite
• ADC — Astronomical Data Center
• LM — Lunar Module
• CDT — Connaissance Des Temps
• CARA — California Association for Research in Astronomy
• STSCI — Space Telescope Science Institute
• SDR — System Design Review
• ASPP — Atmospheric and Space Plasma Physics
• MMU — Manned Maneuvering Unit
• EIA — Extended Interaction Amplifier
• CARA — Center for Astrophysical Research in Antarctica

• CSBN — Committee for Small-Body Nomenclature
• NASM — National Air and Space Museum
• SPVW — Spaceview
• CTE — Charge Transfer Efficiency
• NEOIC — Near Earth Object Information Center
• HCIS — Health Care Information System
• SAO — Smithsonian Astrophysical Observatory
• DC — Delta Clipper
• APJ — Astrophysical Journal
• VDS — Vereinigung der Sternfreunde
• ISN — International Supernovae Network
• OSS — Office of Space Sciences
• BPI — bits per inch
• ANS — Astro News Service
• UT — Universal Time
• AIRCO — Air et Cosmos
• ALAMO — Automated Lunar and Meteor Observatory
• ADIS — Astrophysics Data and Information Services
• XRD — X-Ray Diffraction
• ANEDI — Annals of the Royal Observatory, Edinburgh
• LPO — La Palma Observatory
• NASAL — NASA Circular Letter
• USNO — United States Naval Observatory
• AREG — Astronomical Register
• R/T — Real Time
• LOX — Liquid Oxygen
• CEMEC — Celestial Mechanics
• ADEC — Astrophysics Data Centers Executive Council
• AT — Acceptance Test
• TNM — The New Millenium
• AUASS — Arab Union for Astronomy and Space Sciences
• OSCAR — Orbiting Satellite Carrying Amateur Radio
• ADCBU — Astronomical Data Center Bulletin
• NSP — NASA Support Plan
• SRD — Software Requirements Document
• RECONS — Research Consortium on Nearby Stars
• COSTAR — Corrective Optics Space Telescope Axial Replacement
• ACICH — Astronomical Circular
• AAO — Anglo-Australian Observatory
• BSI — British Standards Institution
• STOMS — Space Telescope Observatory Management System
• EVN — European VLBI Network
• MWOAR — Mount Wilson Observatory Annual Report
• ID — IDentifier
• EPS — Encapsulated Postscript
• JHIT — Joint Healthcare Information Technology Alliance
• PRAES — Progress in Aerospace Sciences
• ORROE — Occasional Reports of the Royal Observatory, Edinburgh
• ASTL — Astronomy Letters
• PHA — Physics And Astronomy

• ADSPR — Advances in Space Research
• LGA — Low Gain Antenna
• BIO — Biotechnology Industry Organization
• NASAR — NASA Reference Publication
• EVA — Extra-Vehicular Activity
• K — Kelvin (absolute temperature scale)
• SSID1 — Soviet Space Insertion Diverter One
• IDTF — Independent Diagnostic Testing Facility
• ANMN — Antarctic Meteorite Newsletter
• SBNC — Small Bodies Names Committee
• MSSS — Maui Space Surveillance Site
• DSS — Deep Space Station
• GSC — Guide Star Catalog
• TAC — Time Allocation Committee
• EBS — Electron Bombarded Silicon
• CQGRA — Classical and Quantum Gravity
• LAMO — low altitude mapping orbit
• S/W — Software
• MEPAG — Mars Exploration Program Analysis Group
• ARC — Astrophysical Research Consortium
• PHASP — Physics and Astrophysics from Spacelab
• LPS — Launch Processing System
• ACMAN — Astronomical Contributions from the University of Manchester
• GHTF — Global Harmonization Task Force
• RQQ — Radio Quiet Quasar
• MFPE — Mission from Planet Earth
• NASAS — NASA Special Publication
• COKON — Commmunications of the Konkoly Observatory Hungary
• UL — Underwriters Laboratory
• JEM — Japanese Experiment Module
• NCI — National Cancer Institute, USA
• LPI — Lunar and Planetary Institute
• ATV — Automated Transfer Vehicle
• IUEDAC — IUE satellite Data Analysis Center
• CMA — Chemical Manufacturers Association
• CQGRS — Classical and Quantum Gravity Supplement
• DUROO — Durham Observatory Observations
• OPAG — Outer Planets Assessment Group
• VBO — Vainu Bappu Observatory
• ESRIN — European Space Research Institute
• NCOS — National Commission on Space
• ZAHB — Zero-Age Horizontal Branch
• ASPRV — Astrophysics and Space Physics Reviews
• OSSA — Office of Space Sciences and Applications
• MSSSO — Mount Stromlo and Siding Spring Observatories
• POEM — Polar-Orbiting Earth Mission
• KPNO — Kitt Peak National Observatory (Tucson, AZ)
• EBCI — Eclipsing Binaries Circulars
• NASAC — NASA Conference Publication
• SSTO — Single-Stage-to-Orbit

• NRAO — National Radio Astronomy Observatory (Greenbank, WV)
• APH — Astroparticle Physics
• CDC — Centers for Disease Control
• OBC — Onboard Computer
• EU — Expanded Universe
• LASCO — Large Angle Spectrometric Coronograph
• AFSCN — Air Force Space Command network
• LRB — Liquid Rocket Booster
• ECSS — European Cooperation for Space Standardization
• ASTD — Advanced Space Technology Division
• EUV — Extreme Ultraviolet Vertical
• WEBT — Whole Earth Blazar Telescope
• ESOSR — European Southern Observatory Scientific Report
• NAOJ — National Astronomical Observatory of Japan
• PROE — Publications of the Royal Observatory of Edinburgh
• SAAO — South African Astronomical Observatory
• NSI — NASA Science Internet
• SNII — SuperNova of Type II
• ASMT — American Society for Medical Technology
• TES — Thermal Emission Spectrometer
• RASC — Royal Astronomical Society of Canada
• NAMN — North American Meteor Network
• EAA — Encyclopedia of Astronomy and Astrophysics
• VSOLJ — Variable Star Observers League in Japan
• CON — Certificate Of Need
• SSME — Space Shuttle Main Engine
• VAI — Voluntary Action Indicated (Food & Drug Administration postaudit inspection classification)
• FTL — Faster Than Light
• PASAU — Proceedings of the Astronomical Society of Australia
• MHW — Ministry of Health and Welfare
• AREPS — Annual Review of Earth and Planetary Sciences
• AZ — Azimuth
• ARISTOTELES — Applications and Research Involving Space Technologies Observing the Earth's Field from Low Earth Orbiting Satellite
• TIFF — Tag Image File Format
• JRASC — Journal of the Royal Astronomical Society of Canada
• MSX — Midcourse Space Experiment
• RFNA — Red Fuming Nitric Acid
• RGO — Royal Greenwich Observatory
• CDSF — Commercially Developed Space Facility
• CME — Coronal Mass Ejection (usually Sun)
• AACCS — Analytical Approach to Candidate Constellation Selection
• LEM — Lunar Excursion Module
• AEXPR — Astronomy Express
• AMPS — Atmosphere, Magnetosphere & Plasmas in Space
• NIZRE — Nizamiah Observatory Reprints
• TUV — Technische Uberwachungs-Vereine
• KCAO — Kumamoto Civil Astronomical Observatory
• STICA — Space Technology Industrial and Commercial Applications
• SGF — SpaceGuard Foundation
• OPF — Orbiter Processing Facility

• AMIA — The American Medical Informatics Association
• SSBUV — shuttle solar backscatter ultraviolet (radiometer)
• ADEPS — Advances in Earth and Planetary Sciences
• SO/SI — space operations and scientific investigation
• ASP — Astronomical Society of the Pacific
• FIRSSE — Far Infrared Sky Survey Experiment
• PM — Pressurized Module
• ISTEC — International Small Telescope Cooperative
• BKOAS — Bulletin of Korean Astronomical Society
• GLP — Good Laboratory Practice
• RA — Right Ascension
• PPCAS — Publication of the Pomona College Astronomical Society
• TIE — Telescopes in Education
• CRPL — Cosmic Ray Physics Laboratory
• BPSK — binary phase shift keying
• TEM — Transverse Electromagnetic
• FS — Far Side
• SPMAR — Space Markets
• K — Kilogram
• TEP — Transits of Extrasolar Planets
• LEGRI — Low Energy Gamma-Ray Imager
• ANDUD — Annals of the Dudley Observatory
• MELOO — Melbourne Observatory Observations
• NESSI — Near Earth Space Surveillance Initiative
• ANHAR — Annals of Harvard College Observatory
• AW&ST — Aviation Week & Space Technology
• ESOC — European Space Operations Center
• JASS — Journal of Astronomy and Space Sciences
• POMIC — Publications of Michigan Observatory
• PDUFA — Prescription Drug User Fee Act (1992, U.S.)
• SDI — Strategic Defense Initiative
• HSP — High Speed Photometer
• SPART — Space Research and Technology
• TTA — Time to Apogee
• NAS — Norsk Astronomisk Selskap
• COLPL — Communications of the Lunar and Planetary Laboratory
• MDI — Michelson Doppler Imager
• MMA — Minnesota Medical Association
• VVORE — Van Vleck Observatory Reprints
• HIRA — Health Industry Representatives Association
• DOY — Day of Year
• BH — Black Hole
• PAM — Payload Assist Module
• MMH — Monomethyl Hydrazine
• PASA — Publications of the Astronomical Society of Australia
• HST — Hubble Space Telescope
• SZA — Solar Zenith Angle
• SEOS — Synchronous Earth Observation Satellite
• COVVO — Contributions of the Van Vleck Observatory
• NRT — near real time

• OVS — Observation of Variable Stars
• Z — Zulu (Greenwich mean time)
• ISY — International Space Year (1992)
• NCAR — National Center for Atmospheric Research (US)
• IRAS — Infrared Astronomy Satellite
• FWHM — Full Width at Half Maximum
• ALPOJ — Association of Lunar and Planetary Observers Journal
• ONRAS — Occasional Notes of the Royal Astronomical Society
• ROSA — Romanian Space Agency
• ESOAR — European Southern Observatory Annual Reports
• IDL — Interactive Data Language
• MCO — Mars Climate Orbiter
• MNRAS — Monthly Notices of the Royal Astronomical Society
• WFF — Wallops Flight Facility
• TOMS — Total Ozone Mapping Spectrometer (satellite Instrument)
• SIMCAT — simulate observations using space catalog
• ANLUN — Annals of the Observatory of Lund
• MERIS — Medium Resolution Imaging Spectrometer
• BASI — Bulletin of the Astronomical Society of India
• SPRBU — Space Research Bulgaria
• CIBAA — Circular of the British Astronomical Association
• MDD — Medical Device Directive
• NCC — Network Control Center (GSFC)
• BBXRT — Broadband XRay Telescope
• QSR — Quality System Regulation
• COMAP — Comments on Astrophysics
• DUDOR — Dudley Observatory Reports
• COROE — Communications from the Royal Observatory Edinburgh
• ADVAMED — Advanced Medical Technology Association
• CPAF — Cost Plus Award Fee (Type of Contract)
• SPP — Solar Physics Payload
• PA — Popular Astronomy
• CAPS — Cassini Plasma Spectrometer
• SPARTAN — Shuttle Pointed Autonomous Research Tool for Astronomy
• PRCO — Publications of the Riverview College Observatory
• RALPH — Reduction and Acquisition of Lunar Pulse Heights
• SA — Solar Array
• E&S — Earth and Space
• ESOSP — European Southern Observatory Scientific Preprints
• VDU — Video Display Unit
• EXA — Experimental Astronomy
• SAPS — Sub Auroral Polarization Streams
• COBOS — Contributions from the Bosscha Observervatory
• BAAS — Bulletin of the American Astronomical Society
• JCAP — Journal of Cosmology and Astro-Particle Physics
• APOD — Astronomy Picture of the Day
• JBAA — Journal of the British Astronomical Association
• APHA — American Pharmaceutical Association
• FSK — Frequency Shift Keying
• JAHH — Journal of Astronomical History and Heritage

• LSR — Local Standard of Rest
• CRAF — Comet Rendezvous/Asteroid Fly-by
• SRON — Space Research Organization of the Netherlands
• ICE — International Cometary Explorer
• JBAS — Journal of the British Astronomical Society
• ANLOW — Annals of the Lowell Observatory
• CV — Cataclysmic Variable
• TDRSS — Tracking and Data Relay Satellite System
• PLICO — Publications of Lick Observatory
• ECRI — Emergency Care Research Institute
• LBLRR — LBL Research Review
• COSRE — Cosmic Research
• MSFN — Manned Space Flight Network
• CM — Command Module
• ONR — Office of Naval Research (U.S.)
• RAZEL — Range, Azimuth and Elevation
• IQSY — International Quiet Sun Year
• PMUNO — Publications of the Munich Observatory
• SRB — Solid Rocket Boosters
• JDSO — Journal of Double Star Observations
• ARCHS — Archaeoastronomy Supplement
• COBRN — Contributions of the Public Observatory and Planetarium in Brno
• ESABU — European Space Agency Bulletin
• ANCAP — Annals of the Cape Observatory
• PASJ — Publications of the Astronomical Society of Japan
• VAB — Vertical Assembly Building
• SDAC — Solar Data Analysis Center
• SR — Special Relativity
• ANDEA — Annales of the Dearborn Observatory
• PDREO — Publications of the Dresden Observatory
• SDIO — Strategic Defense Initiative Organization
• GTO — Geostationary Transfer Orbit
• AUJPA — Australian Journal of Physics Astrophysical Supplement
• MVM — Mariner Venus/Mercury
• OTV — Orbital Transfer Vehicle
• MEDGV — Germany's Medical Equipment Safety Law
• FCPH — Fundamentals of Cosmic Physics
• SETI — Search for Extraterrestrial Intelligence
• WISE — Wide-Field Infrared Survey Explorer
• CMS — Correctional Medical Services
• IPC — Interprocess Communication
• CIT — California Institute of Technology (Pasadena, CA)
• CBER — Center for Biologics Evaluation and Research
• RCS — Reaction Control System/Subsystem
• PAAS — Publications of the American Astronomical Society
• HIAA — Health Insurance Association of America
• COARM — Contributions from the Armagh Observatory
• OCC — Operations control center
• CHA&A — Chinese Astronomy and Astrophysics
• NASO — North American Space Operations

• COLIC — Contributions of Lick Observatory
• UT — University of Texas
• JHAS — Journal for the History of Astronomy Supplement
• CPFF — Cost Plus Fixed-Fee
• PN — Planetary Nebula
• DSSN — Delta Scuti Star Newsletter
• PGLO — Publications of the Goethe Link Observatory
• NIR — Near Infrared
• HRI — High Resolution Imager
• AOA — Abort Once Around (shuttle Abort Plan)
• AREP — Astronomy Reports
• COSKA — Contributions of the Astronomical Observatory Skalnate Pleso
• LR — Long Radius
• ASSU — Annual Scientific Supplement to Urania
• PVO — Pioneer Venus Orbiter
• IRAJ — Irish Astronomical Journal
• LCROSS — Lunar CRater Observation and Sensing Satellite
• M&R — Maintenance and Refurbishment
• PNAOJ — Publications of the National Astronomical Observatory of Japan
• DSMA — Division of Small Manufacturers Assistance
• LBT — Large Binocular Telescope
• CIUO — Circular of the Union Observatory Johannesburg
• ELT — Extremely Large Telescope
• Z — Zenith
• CNB — Cosmic Neutrino Background
• IUEEN — IUE ESA Newsletter
• FAHS — Federation of American Health Systems
• CLMA — Clinical Laboratory Management Association
• IMBH — Intermediate-Mass Black Hole
• IRAJS — Irish Astronomical Journal Supplement
• JAD — Journal of Astronomical Data
• NASPY — North American Society of Electro Physiology and Pacing
• GLOMR — Global Low-Orbiting Message Relay
• CHPA — Consumer Healthcare Products Association
• AP — Array Processor
• PI — Principle Investigator
• COSSE — Cosmic Search Summer
• SUNY — State Universityrsity of New York
• JIMO — Journal of the International Meteor Organization
• FIR — Far Infrared
• EEXSC — Earth and Extraterrestrial Sciences
• ARA&A — Annual Review of Astronomy and Astrophysics
• PLAST — Planetary Astronomy
• MECO — Magnetospheric Eternally Collapsing Object
• MEDEC — Medical Devices Canada
• CODDO — Communications from the David Dunlap Observatory
• ICH — International Conference of Harmonization
• OAP — Odessa Astronomical Publications
• PMANO — Publications of the Manila Observatory
• PERCO — Perkins Observatory Contributions

• COASP — Comments on Astrophysics and Space Physics
• SPOT — Satellite Pour l'Observation de la Terre (France)
• TPS — Thermal Protection System
• ECS — Environmental Control System (Subsystem)
• JASAC — Japan Astronomical Study Association Circulars
• JBRE — Jodrell Bank Reprints
• NRAOR — National Radio Astronomy Observatory Reprints
• LLO — Low Lunar Orbit
• RAA — Relative Azimuth Angle
• TCPA — Time for Closest Point of Approach
• SLC — Space Launch Complex
• UPPAN — Uppsala Astronomical Observatory Annals
• RA — Regulatory Affairs
• WRORE — Wroclaw Astronomical Observatory Reprints
• AACC — American Association for Clinical Chemists
• PBEIO — Publications of the Beijing Astronomical Observatory
• EOS — Earth Observing System (U.S.)
• ACRV — Assured Crew Return Vehicle
• FDLI — Food and Drug Law Institute
• ASAIO — American Society for Artificial Internal Organs
• RSNA — The Radiological Society of North America, Inc.
• BCRAO — Bulletin Crimean Astrophysical Observatory
• ISEE — International Sun-Earth Explorer
• NMI — Nautical Mile
• ESPI — European Space Policy Institute
• MDMA — Medical Device Manufacturers Association
• MELAR — Melbourne Observatory Annual Report
• PVVO — Publications of the Van Vleck Observatory
• PDR — Photo Dissociation Region
• CRARE — Cracow Observatory Reprints
• PDDO — Publications of the David Dunlap Observatory
• ADFRF — Ames-Dryden Flight Research Facility
• CAMRE — Cambridge Observatories Reprints
• MDS — Medium Deep Survey
• AO — announcement of opportunity
• ITU — Infrared Telescope Unit
• CCR — Cost-Charge Ratio
• MOC — Mars Observer Camera
• JKAS — Journal of Korean Astronomical Society
• IU — Interface Unit
• JD — Julian Date
• HRSA — U.S. Health Resources and Services Administration
• IUENN — IUE NASA Newsletter
• MHD — Magnetohydrodynamic
• OV — Orbital Vehicle
• RSO — Resident Space Object
• NEWAR — New Astronomy Review
• ETC — Estimated Time to Completion
• APM — Attached Pressurized Module (a.k.a. Columbus)
• APJL — Astrophysical Journal Letters

• NAHIT — National Alliance for Health Information Technology
• JAAME — Japanese Association for the Advancement of Medical Equipment
• LICOB — Lick Observatory Bulletin
• AFGWC — Air Force Global Weather Central (U.S.)
• WIMP — Weakly Interacting Massive Particle
• JASV — Journal of the Astronomical Society of Victoria Melbourne
• MPL — Mars Polar Lander
• DRG — Diagnosis-Related Groups
• ATLAS — ACTIVITIES Atmospheric Laboratory for Applications and Science
• CFC — Chloroflourocarbon
• PDR — Physician’s Desk Reference
• NCSC — National Council of Senior Citizens
• RA — Research Assistant
• MOPH — Ministry of Public Health
• ECCLS — European Committee on Clinical Laboratory Standards
• IAPM — International Association of Medical Prosthesis Manufacturers
• JBAN — Jodrell Bank Annals
• COPER — Contributions of Perkins Observatory
• CST — Constant-Separation Traversing
• WHT — William Herschel Telescope
• PCINO — Publications of the Cincinnati Observatory
• CEC — Commission of the European Communities ;
• LRSP — Living Reviews in Solar Physics
• S/N — Signal-to-Noise ratio
• TOKRE — Tokyo Astronomical Observatory Reprints
• UVS — Ultraviolet Spectrometer
• SPED — Space Education
• CCAS — Cape Canaveral Air Station
• HIDA — Health Industry Distributors Association
• UARS — Upper Atmosphere Research Satellite (NASA)
• MDR — Medical Device Register
• ASCRS — American Society of Cataract and Refractive Surgery's
• CD-ROM — compact disc-read only memory
• MASSMEDIC — Massachusetts Medical Device Industry Council
• JAPA — Journal of Astrophysics and Astronomy
• HSQB — Health Standard and Quality Bureau
• OASH — Office of the Assistant Secretary for Health
• JHA — Journal for the History of Astronomy
• ESIS — ESA Space Information Systems
• ICD-9-CM — International Classification of Diseases, 9th Edition
• APC — Ambulatory Payment Class
• PSLV — Polar Satellite Launch Vehicle (Indian Space Research Organization; India)
• GEO — Geosynchronous Earth Orbit
• MCD — Minimum Cost Design
• RGOO — Royal Greenwich Observatory Observations
• NIGMS — National Institute Of General Medical Sciences (NIH)
• PV — photovoltaic (solar)
• PEPI — Physics of the Earth and Planetary Interiors
• SMDA — Safe Medical Devices Act (1990)
• CIRCE — Confusion-limited Infrared Cosmology Explorer

• CFIT — Controlled Flight into Terrain
• EPIC — Earth Polychromatic Imaging Camera
• USPHS — United States Public Health Service
• DCT — Discrete Cosine Transformer
• INDA — Investigational New Drug Application
• HIS — Health Information Systems
• GPE — Gravitational Potential Energy
• TIROS — Television InfraRed Observation Satellite (POES)
• DOAMS — distant-object attitude-measuring system
• GML — Galactic Modeling Language
• D — Directive
• POMIN — Publications of the Astronomical Observatory University of Minnesota
• PSPRO — Publications of the Sproul Observatory
• OEJV — Open European Journal on Variable Stars
• EGRET — Energetic Gamma Ray Explorer Telescope
• DSP — Defense Support Program
• MMT — Multiple Mirror Telescope
• UCLA — Harbor-University of California Los Angeles
• HFMA — Healthcare Financial Management Association
• MJD — Modified Julian Date
• MEI — Medical Economic Index
• PMT — Photo Multiplier Tube
• RNAOJ — Report of the National Astronomical Observatory of Japan
• JET-X — Joint European Telescope for X-ray astronomy
• SOT — Solar Optical Telescope
• MAFI — Medical Alert Foundation International
• EFPIA — European Federation of Pharmaceutical Industries and Associations
• S/C — Spacecraft
• CIRRIS — Cryogenic Infrared Radiance Instrument for Shuttle
• CEA — Center for EUV Astrophysics
• DEED — Minnesota Department of Employment and Economic Development
• QBO — Quasi-biennial Oscillation (atm.)
• STERE — Steward Observatory Reprints
• ARKOD — Annual Report of the Kodaikanal Observatory
• PPN — Proto-Planetary Nebula
• SIM — Space Interferometry Mission
• OHTA — Office of Health Technology Assessment
• GPC — General Purpose Computer
• SERAJ — Serbian Astronomical Journal
• PROPAC — Prospective Payment Assessment Commission
• PCA — Proportional Counter Array
• PSK — Phase Shift Key
• AMANDA — Antarctic Muon And Neutrino Detector Array
• RAD — Radiant
• IPEM — Institute of Physics and Engineering in Medicine
• SDSS — Sloan Digital Sky Survey
• LF — Luminosity Function
• VHT — Very High Temperature
• STO — Solar Terrestrial Observatory
• LAC — Lockheed Aircraft Corporation

• ATM — Apollo Telescope Mount (on Skylab)
• A&AS — Astronomy and Astrophysics Supplement Series
• COROT — Convection Rotation and Planetary Transits
• TTP — Time to Perigee
• PCARS — Publication of COMU Astrophysics Research Center
• SYDOP — Sydney Observatory Papers
• CDS — Coronal Diagnostic Spectrometer
• MOTIF — Maui Optical Tracking and Identification Facility
• JETRO — Japan External Trade Organization
• JCAHO — Joint Committee on the Accreditation of Healthcare Organizations
• NAG — Numerical Algorithms Group Inc.
• MTI — Minnesota Technology Inc
• HUT — Hopkins Ultraviolet Telescope
• FDR — Final Design Review
• NRO — U.S. National Reconnaissance Office
• CENELEC — European Committee for Electromechanical Standardisation
• QSO — Quasar|Quasi-Stellar Object
• ATDRS — Advanced Tracking and Data Relay Satellite
• JCCT — Joint Commission on Commerce and Trade (US-China)
• SFR — Star Formation Rate
• SPAC — State Pharmaceutical Administration of China
• GOES — Geostationary Orbiting Environmental Satellite
• OPM — Outer Planet Mission
• HIMSS — Healthcare Information and Management Systems Society
• PDA — Parenteral Drug Association
• RAE — Radio Astronomy Explorer
• MOS — Metal Oxide Semiconductor (FET Devices)
• SEB — Systems Engineering Branch
• HIBCC — Health Industry Business Communications Council
• MVI — Microgravity Vestibular Investigation
• USNOC — United States Naval Observatory Circulars
• ODC — Other Direct Cost
• CGRO — Compton Gamma-Ray Observatory
• LAN — Local Apparent Noon
• WR — Western Range
• LHA — Local Hour Angle
• ETR — Eastern Test Range (ESME Preferred)
• MIL-STD — Military Standard
• UPPOR — Uppsala Astronomical Observatory Reports
• ESTP — European Space Technology Platform
• SPRRE — Sproul Observatory Reprints
• LRO — Lunar Reconnaissance Orbiter
• CNSA — China National Space Administration
• LM&SS — Lunar Mapping and Scientific Survey
• CFF — Columbus Free Flyer
• ISTAHC — International Society of Technology Assessment in Health Care
• EUV — Extreme Ultra-Violet 2
• IES — Institute of Environmental Sciences
• ASCP — American Society for Clinical Pharmacology and Therapeutics
• IMDA — Independent Medical Distributors Association

• CBI — Confederation of British Industries
• MIAA — Medical Industry Association of Australia
• SOLSTICE — Solar Stellar Irradiance Comparison Experiment
• AMDM — Association of Medical Diagnostics Manufacturers
• SF — Square Foot
• EGG — Evaporating Gaseous Globule
• SNR — Super Nova Remnant
• EUDRA — European Drug Regulatory Authorities Network
• LOD — Length of Day
• POSS — Palomar Observatory Sky Survey
• G — Gravity
• QSIT — Quality System Inspection Technique
• LLC — Limited Liability Partnership
• ANSAO — Annals of the Astrophysical Observatory of the Smithsonian Institution
• DNA — Digital Network Architecture
• SSDF — Space Science Development Facility
• LAWOB — Laws Observatory Bulletin
• RTV — Room Temperature Vulcanizer
• CSG — Council of State Governments
• ND — Neutral Density
• OSTA — Office of Space and Terrestrial Applications (US NASA; now OAST)
• PAB — Pharmaceutical Affairs Bureau (Japan)
• AAT — Anglo Australian Telescope
• TPF — Terrestrial Planet Finder
• PPRC — Physician Payment Review Commission
• BATSE — Burst and Transient Source Experiment
• CHI — California Healthcare Institute
• ASH — American Society of Hematology's
• CCR — Configuration Change Request
• FIPS — Fast Imaging Plasma Spectrometer
• NAMES — National Association of Medical Equipment Services
• AIPS — Astronomical Image Processing System
• UGC — Uppsala General Catalog
• TIMED — Thermosphere Ionosphere Mesosphere Energetics and Dynamics
• PVASO — Publications of the Vassar College Observatory
• SPIRE — Spectral Infrared Rocket Experiment
• ERF — Energy Rejection Filter
• TDRS — Tracking and Data Relay Satellites
• SPIE — The Society of Photo-optical Instrumentation Engineers
• KBO — Kuiper Belt Object
• MDA — Medical Device Amendments
• TOKAB — Tokyo Astronomical Bulletin
• PYUNO — Publications of the Yunnan Observatory
• ORA — FDA's Office of Regulatory Affairs
• EFCS — Earth-fixed coordinate system
• MOSS — Market-Oriented Sector Selective
• PWASO — Publications of the Washburn Observatory
• JFMDA — Japan Federation of Medical Device Associations
• PACS — Physics and Astronomy Classification Schemex
• GRS — Gamma Ray Spectrometer

• WD — White Dwarf
• MS — Master Schedule
• PBOSO — Publications of the Bosscha Observatory Lembang
• SUSIM — Solar Ultraviolet Spectral Irradiance Monitor
• MTPPI — Medical Technology and Practice Patterns Institute
• HPB — Health Protection Board (Canada)
• TNO — Trans-Neptunian Object
• ROAN — Royal Observatory Annals
• VLA — Very Large Array
• MDDI — Medical Device and Diagnostics Industry
• CM — Center of Mass
• PRO — Professional Review Organization
• SOPH — Solar Physics
• VO — Virtual Observatory
• NEEDS — NASA end-to-end data system
• STSKY — Star Sky
• AVWG — Assembly and Verification Working Group
• MMKMO — Memoirs Of The Kakioka Magnetic Observatory
• BEV — Billion Electron Volts
• GRO — Gamma Ray Observatory (NASA)
• S&T — Sky & Telescope
• LIGO — Laser Interferometer Gravitational-Wave Observatory
• CL — Command Language
• MTF — Modulation transfer function.
• LAT — Large Area Telescope
• DEM — Differential Emission Measure
• WFC — Wide-Field Camera
• PAMELA — Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics
• APINV — Astrophysical Investigations
• LASS — large-amplitude space simulator
• PYERO — Publications of the Yerkes Observatory
• IOLM — International Organization of Legal Metrology
• MEV — Mars Excursion Vehicle
• INTEGRAL — International Gamma-Ray Astrophysics Laboratory
• RVGSP — Reviews of Geophysics and Space Physics
• PCS — Pointing Control System
• VTVL — Vertical Takeoff Vertical Landing
• GHRS — Goddard High Resolution Spectrograph
• NLN — National League for Nursing
• JGR — Journal of Geophysical Research
• MVEMJSUNP — Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto
• FDAMA — FDA Modernization Act of 1997
• WILOO — Williamstown Observatory Observations
• LAMMR — large-antenna multichannel microwave radiometer
• OG — Original Gravity
• SHA — Sidereal Hour Angle
• IGM — Intergalactic Medium
• LAPSS — Large-Area Pulse Solar Simulator
• MTC — Man-Tended Capability
• CIAO — Chandra Interactive Analysis of Observations

• PT — Pass-Through
• MACHO — Massive Compact Halo Object
• HAACP — Hazard Analysis Critical Control Points Program
• NHIB — National Health Insurance Bureau (Taiwan)
• MM — Memory Module
• RTK — Right-To-Know
• DIN — Deutsches Institut fur Normung
• ER — Eastern Range
• IOA — Institute Of Astronomy (Cambridge)
• WAXS — Wide Angle X-ray Scattering
• SPWD — Space World
• MITTS — Mobile Igor Tracking Telescope System
• M&P — Moon and Planets
• HIB — Health Insurance Bureau (Japan)
• TECRV — Technology Review
• MPBU — Minor Planet Bulletin
• GLOB — Globular
• ISSRT — Israel Space Research and Technology Information Bulletin
• ASIM — American Society of International Medicine
• JAXA — Japan Aerospace Exploration System
• OFAD — Optical Field Angle Distortion
• AGPS — Assisted Global Positioning System
• VAB — Vehicle Assembly Building
• ANTOK — Annals of the Tokyo Astronomical Observatory
• DADS — Data Archive and Distribution System
• AAOPR — Anglo-Australian Observatory Epping Preprint
• MRSR — Mars Rover Sample Return
• RAPS — Regulatory Affairs Professional Society
• STACC — Standard Telemetry And Communications Component
• SOHO — SOlar and Heliospheric Observatory
• IDT — Investigation Definition Team
• ODF — Orbit Determination Facility
• JBIS — Journal of the British Interplanetary Society
• CYSF — Cape York Space Facility
• NMDC — National Medical Device Coalition
• OARE — Orbital Acceleration Research Experiment
• MPEC — Minor Planet Electronic Circular
• TMT — Thirty-Meter Telescope
• HDIF — Health Care Data Interchange Format
• STMAP — Studies in Mathematical Physics
• DH — Data Handling
• EDMA — European Diagnostics Manufacturer's Association
• LH — Liquid Hydrogen
• XUV — Extreme Ultraviolet
• SNAP — Supernova / Acceleration Probe
• FOC — Faint Object Camera
• AVSOM — American Association of Variable Stars Observers Monographs
• FK4 — Fundamental Katalog 4
• NOCC — Network Operations Control Center (GSFC)
• TV — Thermal Vacuum

• LLAGN — Low-Luminosity Active Galactic Nucleus
• DSSC — Deep Space Station Complex
• SPIRIT — Spatial Infrared Telescope
• ISBRV — International Space Business Review
• BBT — Big Bang Theory
• BHB — Blue Horizontal Branch
• COPRE — Copenhagen University Observatory Reprints
• ATEL — Astronomer's Telegram
• LAIRT — Large-Aperture Infrared Telescope
• WMAP — Wilkinson Microwave Anisotropy Probe
• MEDMARC — Medical Device Material Assurance and Reinsurance Company, Ltd.
• UW — University of Wisconsin
• MEDSUN — Medical Device Surveillance Network
• GRC — Glenn Research Center
• RGOB — Royal Greenwich Observatory Bulletin
• IGY — International Geophysical Year (1 July 1957 - 31 December 1958)
• PPQA — Pre-Product Quality Assurance
• BCS — Bragg Crystal Spectrometer
• B/W — Black and White
• SST — Spectroscopic Survey Telescope
• LS/ST — Light Shield/Star Tracker
• PSC — Point Source Catalog
• CBR — Cosmic Background Radiation
• SO — Space Operations
• MOTIE — Ministry of Trade, Industry, and Energy (Korea)
• QTG — Quantum Theory of Gravity
• PHA — Potentially Hazardous Asteroid
• SM — Standard Model
• AXAF — Assembly and Verification Working Group
• TGF — Terrestrial Gamma-Ray Flash
• PISCO — Parallel Imager for Southern Cosmological Observations
• EBTC — Edison BioTechnology Center
• IFA — Institute for Astronomy
• TR — Tape Recorder
• SSS — Spinning Sun Sensor
• NERVA — Nuclear Engine for Rocket Vehicle Application
• PLANEMO — Planetary Mass Object
• SEF — Space Environmental Facility
• QE — Quantum Efficiency
• SAA — South Atlantic Anomaly
• SSGSR — Springer Verlag Springer Series on Group Geophysics Space Research
• LVPS — Low Voltage Power Supply
• UHMW — Ultra High Molecular Weight
• AIMBE — American Insitute for Medical and Biological Engineering
• PERI — Pharmaceutical Education & Research Institute
• COCIR — Coordination Committee of the Radiological and Electromedical Industries
• NUSTAR — Nuclear Spectroscopic Telescope Array
• SPD — Solar Physics Division
• SSRMS — Space Station Remote Manipulator System
• VLT — Very Large Telescope

• AGN — Active Galaxy Nucleus
• ISM — Interstellar Medium
• EMDM — European Medical Device Manufacturer
• NSTL — National Space Technology Laboratories (NASA)
• HCPCS — Health Care Common Procedure Coding System
• CATS — Cheap Access to Space
• TOCC — TDRS Operations Control Center
• MDC — Major Diagnostics Category
• HTML — Hyptertext Markup Language
• NAHC — National Association of Home Care
• SPPOL — Space Policy
• MNBIO — Minnesota Biotechnology
• IFCC — International Federation of Clinical Chemists
• MODIS — Moderate Resolution Imaging Spectroradiometer
• SKA — Square Kilometre Array
• SPAN — Space Physics Analysis Network
• USNOR — United States Naval Observatory Reports
• SPICE — Survey Probe Infrared Celestial Experiment
• OMS — orbital maneuvering system
• IPA — Institute for Polyacryclate Sciences
• SANS — Stellar Autonomous Navigation System
• HGA — High Gain Antennae
• SSPF — Space Station Processing Facility
• ADSAC — Advanced Series in Astrophysics and Cosmology
• SIP — Sickness Index Profile
• LPV — Long Period Variable
• IPNS — Intense Pulsed Neutron Source
• OAO — Orbital Astronomical Observatory
• BAVSO — Bulletin of the American Association of Variable Stars Observers
• PMA — Premarket Application
• HEDIS — Healthplan Employee Data and Information
• AR — Active Region
• NACA — National Advisory Committee on Aeronautics
• POL — Physician's Office Laboratory
• SIRTF — Space Infrared Telescope Facility
• DCR — Document Change Request
• VLBI — Very Long Baseline Interferometry
• CU — Calibration Unit
• KODOB — Kodaikanal Observatory Bulletins
• UADE — Unanticipated Adverse Device Effects
• USAFA — United States Air Force Academy
• LCG — light curve generator
• NEAR — Near-Earth Asteroid Rendezvous
• EUCOMED — European Confederation of Medical Suppliers Associations
• PBPK — Physiologically-Based Pharmacokinetic
• SSI — Solid-State Imager
• PMC — Permanently Manned Capability (of Space Station)
• JCMT — James Clerk Maxwell Telescope
• MACRO — Monopole, Astrophysics and Cosmic Ray Observatory
• MPI — Minnesota Project Innovation

• E — Earth
• 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)
• COWAT — Contributions of the University of Waterloo Observatory
• SM — Secondary Mirror
• MA — Medical Alley
• MMASI — Memoirs of the Astronomical Society of India
• MMO — Mercury Magnetospheric Orbiter
• CCLRC — Central Laboratory of the Research Councils
• B/L — Baseline
• FRC — Flight Research Center
• JHU — The Johns Hopkins University (Baltimore, MD)
• MST — Mean Solar Time
• MSP — Millisecond Pulsar
• SDO — Scattered Disk Object
• ST-ECF — Space Telescope - European Coordinating Facility
• UNOOSA — United Nations Office for Outer Space Affairs
• JRASN — Journal of the Royal Astronomical Society of New Zealand
• PC — Planetary Camera
• SRAG — Space Radiation Analysis Group
• ET — External Tank
• MBBNET — Minnesota Biomedical Business Network
• ODE — Office of Device Evaluation
• WSMR — White Sands Missile Range (whiz-murr)
• MPC — Minor Planet Circulars
• T&E — Test and Evaluation
• AAONW — Anglo-Australian Observatory Epping Newsletter
• STHCG — Studies in High Energy Physics Cosmology and Gravitation
• PEB — Performance Evaluation Board
• TAI — International Atomic Time
• TEC — Thermal Electric Cooler
• MMRAS — Memoirs of the Royal Astronomical Society
• LDEF — Long Duration Exposure Facility (for Spacecraft Material Testing)
• MMIC — Medical Manufacturers' Information Council
• PKAS — Publication of the Korean Astronomical Society
• RGB — Red Giant Branch
• FPA — Floating Point Accelerator
• SGR — Soft Gamma Repeater
• DSS — Digitized Sky Survey
• POVRO — Publications of the Owens Valley Observatory
• ESS — Engineering Support System
• BD — Bonner Durchmusterung
• MVCA — Minnesota Venture Capital Association
• SIMBAD — Set of Identifications, Measurements, and Bibliography for Astronomical Data
• ESAST — European Space Agency Scientific Technical Review
• STATS — star tracker alignment test set
• THAST — Theoretical Astrophysics
• PLR — Planetary Report
• CEAB — Central European Astrophysical Bulletin
• DMF — Data Management Facility
• SNR — SuperNova Remnant

• AU — Alternate Universe
• DDORE — David Dunlap Observatory Richmond Hill Reprints
• MDR — Medical Device Reports
• AVSOQ — American Association of Variable Stars Observers Quarterly Reports
• D/A — Digital-to-Analog
• NRF — National Research Foundation
• XMM — X-ray Multi Mirror
• DWE — Doppler Wind Experiment
• ASC — Agence Spatiale Canadienne
• SCP — Supernova Cosmology Project
• TMA — Tycho Magnetic Anomaly
• ISO — Imaging Spectrometic Observatory
• NR — Non-Relativistic
• AVSOA — American Association of Variable Stars Observers Abstracts
• DOC — Data Operations Center
• IRBS — Infrared Background Sensor
• M — Messier
• AASPP — Astrononomy and Astrophysics Series
• BHTA — British Healthcare Trades Industry
• OWL — Overwhelmingly Large Telescope
• ICCD — Intensified Charge-Coupled Device
• CEV — Crew Exploration Vehicle
• DG — Data Group
• SEM — space environment monitoring
• PAB — Publications of The Astrophysics Branch Ottawa
• STEREO — Solar Terrestrial Relations Observatory
• SIRTF — Shuttle InfraRed Telescope Facility
• ZPF — Zero-Point-Fluctuation
• VEEGA — Venus-Earth-Earth Gravity Assist
• LRO — Large Radio Observatory
• VDC — Volts, Direct Current
• UDL — Unique Data Log
• HOTOL — Horizontal Takeoff and Landing Launcher
• ASSA — Astronomical Society of South Africa
• ROE — Royal Observatory, Edinburgh
• PBRN — Publications of the Astronomical Institute of the University of Borneo
• CWS — Committee on World Standards
• LDEO — Lamont-Doherty Earth Observatory
• SPO — Sacramento Peak Observatory
• PST — Personal Solar Telescope
• HEO — Highly Elliptical Orbit
• RAPS — radiologists, anesthesiologists, and pathologists
• TEA — Torque Equilibrium Attitude
• RSU — Rate Sensor Unit
• MPS — Mission Planning System
• SG — Shattered Galaxy (game)
• ESOB — European Southern Observatory Bulletin
• NEA — Noise Equivalent Angle
• FQR — Flight Qualification Review
• PAN-STARRS — Panoramic Survey Telescope and Rapid Response System

• RV — Radial Velocity
• ASTRA — Astrophysics and Space Sciences Transactions
• RC — Relativistic Correction
• SST — Space Surveillance and Tracking
• IDA — International Dark-Sky Association, Inc.
• GAS — Getaway Special
• PSF — Point Spread Function
• NM — Non-Moment
• GG — Gravity Gradient
• LST — Local Sidereal Time
• MER — Mars Exploration Rover
• CTB — Cargo Transfer Bag
• DPS — Division for Planetary Sciences
• OHP — Observatoire de Haute-Provence
• MMBAA — Memoirs of the British Astronomical Association
• BMDO — Ballistic Missile Defense Office
• PVSS — Publications of Variable Star Section
• ANSHO — Shanghai Observatory Annals
• ADASS — Astronomical Data Analysis Software and Systems
• PCOOO — Publications of the Cook Observatory
• GST — Ground System Test
• DSNPR — Deep Space Network Progress Report
• MMAAR — Maria Mitchell Association Annual Report
• TOY — Time of Year
• WR — Wolf-Rayet Star
• SAC — Solar Array Carrier
• TMC — Taurus Molecular Cloud
• XRT — X-Ray Telescope
• CAPMI — Royal Observatory Cape Mimeogram
• LNSP — Lecture Notes and Supplements in Physics
• PDAO — Publications of the Dominion Astrophysical Observatory
• MTSRE — Mount Stromlo Observatory Reprints
• PFAO — Publications of the Flower Astronomical Observatory
• SI — Science Instrument
• LITVC — Liquid Injection Thrust Vector Control
• ATC — Absolute Time Command
• SVPCS — Springer Verlag Springer Series on Physics Chemistry Space
• ESTEC — European Space Technology Center
• SAC — Saguaro Astronomy Club
• EGRET — Energetic Gamma Ray Experiment Telescope
• ACE — Actuator Control Electronics
• ZD — Zenith Distance
• BANS — Bulletin of the Astronomical Institutes of the Netherlands, Supplement Series
• APPLE — Ariane Passenger Payload Experiment
• AGILE — Astro-rivelatore Gamma a Immagini Leggero
• POHEL — Publications of the Astronomical Observatory Helsinki
• WCFZ — Worst Case Fresnel Zone
• ODB — Operations Data Base
• PLSS — Portable Life Support System
• HRMS — High Resolution Microwave Survey (SETI, Project Phoenix)

• PDO — Publications of the Dominion Observatory Ottawa
• ADU — Astronomical Distance Unit
• VLBA — Very Long Baseline Array
• CORAD — Communications from the Radcliffe Observatory Pretoria South Africa
• RMS — Record Management System
• ANLL — Annals of the Observatory of Lucien Libert
• SMM — Solar Maximum Mission
• PLAWO — Publications of Laws Observatory
• AEDRV — Astronomy Education Review
• CRISTA — Cryogenic Infrared Spectrometer Telescope For Atmosphere
• MV — Apparent Visual Magnitude
• IPNPR — Interplanetary Network Progress Report
• VCS — Vernier Control System
• OGSE — Optical Ground Support Equipment
• JWST — James Webb Space Telescope
• NEO — Near Earth Object
• OAF — Optical Alignment Facility
• CAROB — Carter Observatory Wellington New Zealand Astronomical Bulletins
• AP&SS — Astrophysics and Space Science
• ISTS — Institute for Space and Terrestrial Science
• MACHO — Massive Astronomical Compact Halo Object
• UIT — Ultraviolet Imaging Telescope
• LGRB(S) — long gamma ray burst(s)
• MOLA — Mars Observer Laser Altimeter
• ROUS — Rodents Of Unusual Size
• VAC — Volts, Alternating Current
• PGOOO — Publications of the Goodsell Observatory
• POCC — Payload Operations Control Center
• VMS — Vertical Motion Simulator
• IRFNA — Inhibited Red Fuming Nitric Acid
• HZ — Habitable Zone
• OOTU — Origin Of The Universe
• TCE — Thermal Control Electronics
• MAGIC — Major Atmospheric Gamma-ray Imaging Cherenkov Telescope
• CD — Cordoba Durchmusterung
• VAFB — Vandenberg Air Force Base
• PA — Position Angle
• APL&C — Astrophysical Letters Communications
• MLI — Multilayer Insulation
• HB — Hot Bands
• ARBEI — Astrophysics Reports Publications of the Beijing Astronomical Observatory
• LGM — Little Green Men
• PPMTO — Publications of the Purple Mountain Observatory
• IMO — International Meteor Organization
• PASPS — Publications of the Astronomical Society of the Pacific Supplement
• PMCCO — Publications of the Leander McCormick Observatory
• BIS — British Interplanetary Society
• PRAST — Practical Astronomy
• AAAD — Amateur Astronomers Association Delhi
• CCA — Cambridge Contemporary Astrophysics

• PAIB — Publications of the Astronomy Institute of Bonn
• MOWG — Mission Operations Working Group
• SSP — Subsolar Point
• WSO — Wilcox Solar Observatory
• MPO — Mercury Planetary Orbiter
• EPD — Energetic Particles Detector
• ALMA — Atacama Large Millimeter Array
• LST — Large Space Telescope
• HVR — Hyper-Variable Region
• AVSOR — American Association of Variable Stars Observers Reports
• LEND — Lunar Exploration Neutron Detector
• APSSS — Astrophysics and Space Science Supplement
• PAICZ — Publications of the Astronomical Institute of the Czechoslovak Academy of Sciences
• SXR — Soft X-Ray
• PISTO — Publications of the Istanbul Observatory
• MTWRE — Mount Wilson and Palomar Observatory Reprints
• FRAS — fellow of the Royal Astronomical Society
• KODRE — Kodaikanal Observatory Reprints
• KP — Kitt Peak
• IWG — Interface Working Group
• LERC — Lewis Research Center
• CRS — Cambridge Reference Sequence
• HRS — High Resolution Spectrograph
• MO — Mars Observer
• MIP — Moon Impact Probe
• IRA — Infrared Astronomy
• NSC — Navigational Star Catalog
• VAP — Verification and Acceptance Program
• VPF — Vertical Processing Facility
• ANBOS — Annals of the Bosscha Observatory Lembang
• LAMP — Lyman-Alpha Mapping Project
• TEI — The Education Initiative
• COLON — Communications of the University of London Observatory
• SIC — Spacecraft Identification Code
• CVZ — Continuous Viewing Zone (Hubble Space Telescope; US NASA)
• AXP — Anomalous X-Ray Pulsar
• RTS — Relative Time Sequence
• OBAFGKM — Oh, Be A Fine Girl, Kiss Me
• TMTE — Telemetry Test Equipment
• GHA — Greenwich Hour Angle
• CEO — Corporate Europe Observatory
• APL — Astrophysical Letters
• RICAP — Roma International Conference on Astroparticle Physics
• AGK3 — Katalog der Astronomischen Gesellschaft 3
• WTR — Western Test Range
• WCS — World Coordinate System
• COOXF — Communications from the University Observatory Oxford
• WAA — Westchester Amateur Astronomers
• SAS — Space Adaptation Syndrome
• WKO — Well-Known Object

• SST — Spitzer Space Telescope
• DLR — Deutschen Zentrum für Luft- und Raumfahrt
• VHE — Very High Energy
• PAM-D — Payload Assist Module, Delta-class
• SL — Comet Shoemaker-Levy
• TBBT — The Big Bang Theory
• RASS — ROSAT All-Sky Survey
• NEP — North Ecliptic Pole
• MEERE — Kenneth Mees Observatory Reprints
• SR — Spectral Recording
• EROS — Earth Resources Observation Satellite
• CSVS — Catalogue of Suspected Variable Stars
• CAS — Cambridge Astrophysics Series
• NED — NASA/IPAC Extragalactic Database
• MOND — Modified Newtonian Dynamics
• CDCA — Centre de Depoiullement des Cliches Astronimiques
• MINISAT — Miniature Satellite
• DES — Deep Ecliptic Survey
• SID — Sudden Ionospheric Disturbance
• PKIRO — Publications of the Kirkwood Observatory of Indiana University
• AC — Astrographic Catalogue
• RAL — Radio Astronomy Laboratory
• DENIS — Deep Near-Infrared Survey
• SMS — Science Mission Specification
• OMC — Orion Molecular Cloud
• HAO — High Altitude Observatory (NCAR)
• GIO — graphics input/output
• ANCGH — Annals of Royal Observatory, Cape of Good Hope
• MNSSA — Monthly Notes of the Astronomical Society of South Africa
• UBM — Unpressurized Berthing Mechanism
• CARRE — Carter Observatory Wellington New Zealand Reprints
• SMART — Small Missions for Advanced Research in Technology
• VOIR — Venus Orbiting Imaging Radar
• MTSOM — Mount Stromlo Observatory Mimeographs
• OLT — Observatory Level Test
• LFT — Luyten Five-Tenths
• EBE — Extraterrestrial Biological Entity
• MLY — Mega Light Year
• VTHL — Vertical Takeoff Horizontal Landing
• BALTA — Baltic Astronomy
• BDB — Big Dumb Booster
• SOHO — Solar Heliospheric Observatory
• ETOL — ESA Test and Operations Language
• FGE — Fine Guidance Electronics
• ITF — Intensity Transfer Function
• SAOCO — Smithsonian Astrophysical Observatory - Contributions to Astrophysics
• CCDM — Catalog of Components of Double and Multiple Stars
• PF&CO — Publications of the Flower and Cook Astronomical Observatory
• PNLF — Planetary Nebula Luminosity Function (astronomy)
• SQPK — staggered quadrature phase shift keying

• IAO — International Astronomy Olympiad
• MPF — Mars PathFinder
• SPDM — Special Purpose Dextrous Manipulator
• TT — Terrestrial Time
• COAST — Communications in Asteroseismology
• AMR — Antarctic Meteorite Research
• TMP — Technical Management Plan
• IDT — Instrument Development Team
• MFR — Manipulator Foot Restraint
• ECA — Earth Crossing Asteroid
• PASK — Publications of the Academy of Science Kasakstan
• SP — Solar Physics
• DSO — Deep Sky Object
• COPRI — Contributions from the Princeton University Observatory
• LOWOB — Lowell Observatory Bulletin
• STAR — Space Telescope Axial Replacement
• SP — sun point
• EHB — Extreme Horizontal Branch
• APT — Automatic Photometric Telescope
• SOUST — Southern Skies
• SPRL — Space Physics Research Laboratory
• CSM — Circumstellar Material
• UIC — User Identification Code
• CIT — Circumstellar Imaging Telescope
• DQE — Detector Quantum Efficiency
• A — Angstrom unit
• A/D — Analog to Digital (conversion)
• FIRST — Frontiers in Research: Space and Time
• EAAA — Escambia Amateur Astronomers Association
• ISR — Instrument Science Report
• DDTE — Design, Development, Test, and Evaluation
• OPS — Operations Division
• EU — Extended Universe
• STARCAT — Space Telescope Archive Catalog
• PCS — Physics and Chemistry in Space
• MONGO — Interactive graphics software package
• TOPS — Toward Other Planetary Systems
• PDAA — Publications of the Department of Astronomy, Austin, Texas
• MSOCC — Multisatellite Operations Control Center
• MDRS — Mars Desert Research Station
• ATM — Amateur Telescope Maker
• RLQ — Radio Loud Quasar
• OTHB — Over The Horizon Backscatter
• OXFOO — Oxford University Observatory Observations
• CM/QA — Configuration Management/Quality Assurance
• CPMF — cost plus management fee
• FACC — Ford Aerospace Communications Corporation
• AGN — Active Galactic Nucleus
• BWI — Baltimore-Washington International Airport, between Baltimore, Maryland and Washington, DC, United States
• CPD — Cape Photographic Durchmusterung

• CSM — Command and Service Module
• MICRE — University of Michigan Observatory Reprints
• BCG — Blue Compact Galaxy
• SLAP — Space Link Access Protocol
• ASTQ — Astronomy Quarterly
• KTB — Cretaceous-Tertiary Boundary
• LUT — Lookup Table
• RTC — Real-Time Command
• MSTO — Main Sequence Turn-Off
• CCD — Color-Color Diagram
• COTS — Cheap Off the Shelf
• IPPPSSOOT — file naming convention for HST data sets
• ABBA — ADC Backend For Bolometer Array
• MPC — Minor Planets Circular
• FAME — Full-sky Astrometric Mapping Explorer
• AST — Astrometry Science Team
• SIA — Solar Inertial Attitude
• AIT — Assembly, Integration, and Testing
• AEA — Atomic Energy Agency
• NEAF — North East Astronomy Forum
• NG — Newsgroup
• MS — Mission Schedule
• YSO — Young Stellar Object
• SMA — Secondary Mirror Assembly
• HLV — Heavy Lift Vehicle
• SETI — Search for Extra Terrestial Intelligence
• NSL — Northrop Space Laboratory
• ODAS — OCA (Observatoire de la Côte d'Azur) - DLR (Deutschen Zentrum für Luft- und Raumfahrt) Asteroid Survey
• BRITE — Bright-Star Target Explorer
• MTWAR — Mount Wilson and Palomar Observatory Annual Report
• RNP — Rotation, Nutation and Precession
• GVI — Global Village Idiot
• ZAP — Z Axis Precession
• ZHR — Zenith Hourly Rate
• PWM — pulse width modulated
• TFMRP — Transfer Function Mode Reduction Package
• SAT — Synthetic Aperture Telescope
• DQF — Data Quality File
• PAD — Pulse Amplitude Discriminator
• SUMER — Solar Ultraviolet Measurements of Emitted Radiation
• NSSCC — NORAD Space Surveillance Computation Center
• EU — Engineering Unit
• NGS — National Geographic Society
• SCSP — Science and Culture Series Physics
• FDI — failure detection and isolation
• GDS — Great Dark Spot
• VSSSC — Variable Star Section Special Circulars
• SPP — Subset Preprocessor
• FAST — Fast Auroral Snapshot Explorer
• DISR — Descent Imager/Spectral Radiometer

• AOR — Astronomical Observation Request
• TAG — Two-Axis Gimbal
• HTVL — Horizontal Takeoff Vertical Landing
• CTO — Color Temperature Orange
• MEM — Maximum Entropy Method
• CCL — Closed Conference Loop
• SN — SuperNova
• TAR — Test Authorization Request
• SGRB(S) — short gamma ray burst(s)
• MTR — Mean Time to Restore
• CELT — California Extremely Large Telescope
• ACV — Alpha Canes Venatici
• SV — Science Verification
• CSO — Caltech Submillimeter Observatory
• QPOE — Quick Position Oriented Event
• SB — Spectroscopic Binary
• AAA — Amateur Astronomers Association
• PDA — Photon Detector Assembly
• WXQ — Waxing Quarter
• RM — Retrieval Mode
• LMST — Local Mean Sidereal Time
• OSB — Operations Software Branch
• SXT — Soft X-Ray Telescope
• LBVS — Luminous blue variable
• TZO — Thorne-Å»ytkow Object
• CSPN — Central Star of Planetary Nebula
• DN — Digital Number
• SCAS — Southern Cross Astronomical Society, Inc.
• SWAS — Submillimeter Wave Astronomy Satellite
• VELLO — Very Low Luminosity Object
• HRA — High Resolution Apodizer
• Z — Redshift Factor
• ARGOS — Advanced Research Global Observation Satellite
• SAL — Space Astronomy Laboratory (Univ. Wisconsin, Madison WI)
• FSM — First Servicing Mission
• AESS — Institute of Electrical and Electronic Engineers - Aerospace and Electronics Systems Society
• BOOK — Bio Optical Organized Knowledge
• CAI — Calcium Aluminum-rich Inclusion
• STERJ — Solar, Terrestrial and Environmental Research Japan
• LIRG — Luminous Infrared Galaxy
• LBN — Lynds Bright Nebula
• ABB — After the Big Bang
• XN — X-ray Nova
• PEP — Proposal Entry Processor
• SARA — Satellite pour Astronomie Radio Amateur
• JVO — Japanese Virtual Observatory
• PODPS — Post Observation Data Processing System
• IRDC — Infrared Dark Cloud
• ETI — Extraterrestrial Intelligence
• TAUVEX — Tel Aviv University Ultraviolet Explorer

• GSPC — Guide Star Photometry Catalog
• FEM — Finite Element Model
• MCSA — Mir Cooperative Solar Array
• FPA — Focal Plane Assembly
• IDT — Image Dissector Tube
• CCAR — Colorado Center for Astrodynamics Research
• WBHF — WideBand High Frequency
• RPI — Rensselaer Polytechnic Institute (Rensselaer, NY)
• TKSC — Tsukuba Space Center
• LCRS — Las Campanas Redshift Survey
• GCVS — General Catalog of Variable Stars
• FES — Fine Error Signal
• LENA — Low Energy Neutrino Astronomy
• SERF — Space Environment Research Facility
• ACRV — Astronaut Crew Rescue Vehicle
• VRCS — Vernier Reaction Control System
• SED — Spectral Energy Distribution
• BMO — Black Moving Object
• DSD — Data Systems Division
• VRM — Venus Radar Mapper
• SPWEA — Space Weather
• XCS — XMM Cluster Survey
• SST — Software Support Team
• VSSCI — Variable Star Section Circulars
• IPS — Inches Per Second
• QE — Quality Engineer
• ORB — Observatoire Royal de Belgique (Royal Observatory of Belgium)
• VSSRE — Variable Star Section Reprints
• DCF — Data Capture Facility
• GOX — Gaseous Oxygen
• GXY — Galaxy
• PEGA — Programs in Extra-Galactic Astronomy
• PTF — Payload Test Facility
• O — Oblivion
• UDMH — Unsymmetrical Dimethyl Hydrazine (Alar Metabolite)
• OCB — Operational Configuration Baseline
• SRS — Stellar Radiation Sensor
• EAPU — External Auxiliary Power Unit
• FGS — Fine Guidance Sensors
• PNNV — Planetary Nebula Nucleus Variable
• BBH — Big Black Hole
• SUVSR — Scandinavian Union of Amateur Astronomers Variable Star Section
• EA — Eclipsing Algol
• PK — Perek-Kohoutek
• CPMM — characters per millimeter
• CAAS — Central Arkansas Astronomical Society
• SWEEPS — Sagittarius Window Eclipsing Extrasolar Planet Search
• AST — Apparent Solar Time
• GEIS — Generic Edited Information Set
• CDMH — Cold Dark Matter Haloes

• NEA — Near-Earth Asteroid
• HFQPO(S) — high-frequency quasi-periodic oscillation(s)
• BAC — Bordeaux Astrographic Catalog
• HIPO — Hierarchic Input-Process-Output
• LBV — Luminous Blue Variable
• ATR — Absolute Time Reference
• STIF — Software Test and Integration Facility
• SNAP — Structural Network Analysis Program
• VPU — video processing unit
• TOYAL — Transactions of the Astronomical Observatory of Yale University
• DMS — Data Management Subsystem
• RQZ — Radio Quiet Zone
• OMS — Observatory Monitoring System
• WAA — Western Amateur Astronomers
• ARAA — Annual Review of Astronomy and Astrophysics
• SLOI — Satellite Lake Observatory Initiative
• DOV — Director of Orbital Verification
• ADAF — Advection-dominated Accretion Flow
• SCSA — Science and Culture Series Astrophysics
• VGRF — Variable-Gravity Research Facility
• LV — Lunette Verte
• SLTV — System Level Thermal Vacuum
• NICMOS — Near-Infrared Camera and Multi-Object Spectrometer
• NEMP — Nitrogen-Enhanced Metal-Poor
• SWAT — Swift Action Team
• RXTE — Rossi X-Ray Timing Explorer
• BDF — Block Data Format
• ACS — Advanced Camera for Surveys
• QPO — Quasi-periodic Oscillation
• CEMP — Carbon-Enhanced Metal-Poor
• AWG — Astronomy Working Group
• IRAC — International Radio Advisory Committee
• QZ — Quasi Zenith
• THEMIS — Thermal Emission Imaging System
• EJASA — Electronic Journal of the Astronomical Society of the Atlantic
• SPIF — Shuttle/POCC Interface Facility
• VFN — virtual file name
• NIMS — Near-Infrared Mapping Spectrometer
• SQM — Strange Quark Matter
• TWA — TW Hydrae Association
• HTHL — Horizontal Takeoff Horizontal Landing
• GTO — Guaranteed Time Observer
• OPB — Observation Planning Branch
• DPOSS — Digitized Palomar Observatory Sky Survey
• STOL — Systems Test and Operations Language
• TSTO — Two-Stage-To-Orbit
• CSS — Catalina Sky Survey
• SAREX — Search and Rescue Exercise
• EMP — Extremely Metal-Poor
• SFS — Smallest Feature Size

• ADIL — Astronomy Digital Image Library
• CMBR — Cosmic Microwave Background Radiation
• UGZ — UG Z Camelopardalis
• SDMS — Spatial Data Management System
• WAA — Wiener Arbeitsgemeinschaft für Astronomie
• TIUCS — Transactions of the International Union for Cooperation in Solar Research
• AQR — Aquarius
• VZA — Viewing Zenith Angle
• GMC — Giant Molecular Cloud
• VILCO — Villanova University Observatory Contributions
• EVAC — East Valley Astronomy Club
• RC — Reference Catalogue
• COMPTEL — Compton Telescope
• ZOF — zone of exclusion
• RGA — Rate Gyro Assembly
• LMSC — Lockheed Missile and Space Corporation
• DN — Dwarf Nova
• CFCO — Committee for Crescent Observation
• ROLUN — Reports of the Lund Observatory
• CG — Compact Galaxy
• AVO — Astrophysical Virtual Observatory
• LSO — Large Solar Observatory
• SAGA — Solar Array Gain Augmentation
• CREAM — Cosmic Ray Energetics and Mass
• SUPRIME — SUbaru PRIME focus CAMera
• LWS — Long Wavelength Spectrometer
• CCO — Catalogue of Cometary Orbits
• CIP — Celestial Intermediate Pole
• RIACS — Research Institute for Advanced Computer Science
• EKBO — Edgeworth-Kuiper Belt Object
• VERITAS — Very Energetic Radiation Imaging Telescope Array System
• ULAS — Union List of Astronomy Serials
• IFT — Inverse Fourier Transform
• PUSNO — Publications of the US Naval Observatory
• AJD — Astronomical Julian Day
• CAMAC — Computer-Aided Measurement and Control
• WIRE — Wide-Field Infrared Explorer
• WIYN — Wisconsin Indiana Yale NOAO Telescope Consortium
• CVAS — Chippewa Valley Astronomical Society
• MWO — Mount Wilson Observatory
• RRAT — Rotating RAdio Transient
• QV — quick visual
• WOMBAT — Wavelength-Oriented Microwave Background Analysis Team
• SPT — South Pole Telescope
• SJC — slit jaw camera
• ENE — East North East
• SSRV — Space Science Reviews
• PSR — Pulsar Supernova Remnant
• IRAC — Infrared Array Camera
• PASP — Publications of the Astronomical Society of Pacific

• NOT — NOrdic Telescope
• PMIRR — Pressure Modulated InfraRed Radiometer
• MU — Memory Unit
• SQPN — staggered quadriphase pseudo-random noise
• C/C — configuration control
• SHAD — Stellar Horizon Atmospheric Dispersion
• RVMA — Reviews in Modern Astronomy
• RTLT — Round Trip Light Time
• OCS — Optical Control System
• AD — Analog to Digital
• UKIRT — United Kingdom Infrared Telescope
• GMT — Greenwich Mean Time (now obsolete)
• DDCU — DC-to-DC Converter Unit
• MMR — Mean-Motion Resonance
• CAAA — Capital Area Astronomy Association
• SDP — science data packet
• BCCP — Berkeley Center for Cosmological Physics
• SOFA — Standards of Fundamental Astronomy
• IMSL — International Mathematical and Statistical Library
• C&DH — Control and Data Handling
• GAF — Geographic Adjustment Factor
• GLOW — Gross Lift-Off Weight
• LSST — Large Synoptic Survey Telescope
• TCB — Barycentric Coordinate Time
• DN — Dwarf Novae
• STR — Science Tape Recorder
• SEB — Source Evaluation Board
• SIF — Science Instrument Formatter
• STAVF — Space Telescope Assembly and Verification Facility
• SPE — Static Phase Error
• CM — Critical mass
• WISARD — Web Interface for Searching Archival Research Data
• RMS — Remote Manipulator System
• STL — science trailer line
• IDMP — International Daylight Measurement Program
• GMRT — Giant Meter-wave Radio Telescope
• IAAC — Internet Amateur Astronomers Catalog
• SGEMP — Space-Generated Electromagnetic Pulse
• P&A — Physics and Astronomy
• SPA — Solar Panel Assembly
• AGK — Astronomische Gesellschaft Katalog
• PRESTO — Project to Re-Engineer Space Telescope Observing
• PSL — Program Support Library
• GSOWG — Ground Systems Operations Working Group
• UGSU — UG SU Ursae Majoris
• APT — Automated Patrol Telescope
• CNSR — Comet Nucleus Sample Return
• AOA — ASCA Online Arxiv
• EAAS — East Antrim Astronomical Society
• NLTE — Non-local Thermodynamic Equilibrium

• OCO — Oort Cloud Object
• RABF — Radio Astronomy Bandstop Filter
• ORR — Orbit Readiness Review
• IBBTF — Imagination Baffled By The Facts
• CISCO — Cooled Infrared Spectrograph and Camera for OHS
• CASB — Catalogs and Survey Branch
• CST — Constant
• ESTR — Engineering and Science Tape Recorder
• TECU — Technology and Culture
• IRAIT — International Robotic Antarctic Infrared Telescope
• SQIID — Simultaneous Quad Infrared Imaging Device
• TYC — Tycho
• MEV — million electron volts
• M — Mira
• OSS — Observation Support System
• VISTAR — visible space tracking and reconnaissance
• SPIEL — Signal Processing Interactive Extensible Language
• IQL — Interactive Query Language
• LC — Las Campanas observatory
• CMT — Carlsberg Meridian Telescope
• CSAA — Committee on Space Astronomy and Astrophysics
• PCT — Program Coordinator Team
• CIBR — Cosmic Infrared Background Radiation
• PFS — Percent Full Scale
• SFC — Space Forecast Center
• E/A — Ephemeris/Attitude
• ULE — Ultralow Expansion
• CCIR — Comit? Consultatif International Pour La Radio (French For Consultative Committee On International Radio
• PMDB — Project Management Data Base
• ASP — Analog Signal Processor
• BSG — Blue SuperGiant
• UST — Universal Standard Time
• AET — Accuracy Enhancing Technology
• GBT — Green Bank Telescope
• SSC — Science Support Center
• C&A — calibration and analysis
• HERA — Hermes Robotic Arm
• ACURA — Association of Canadian Universities for Research in Astronomy
• CBS — Contract and Business Services
• OPUS — OSS and PODPS Unified Systems
• ICSO — International Conference on Space Optics
• SETA — Search for Extra Terrestrial Artifacts
• NPS — North Polar Sequence
• VSOLB — Variable Star Observers League in Japan - Bulletin
• IDM — Intelligent Database Machine
• EOSL — Earth Observation Systems Laboratory
• LWR — Long Wavelength Redundant
• MSE — Milton S. Eisenhower library
• PUAMS — Publications of the Astronomical Institute of the University of Amsterdam
• ACS — Actuator Control System

• KAIT — Katzman Automatic Imaging Telescope
• SMOV — Servicing Mission Observatory Verification
• CMC — Carlsberg Meridian Catalogue
• ACP — Aerosol Collector and Pyrolyser
• CFCP — Center for Cosmological Physics
• SAM — Small Angle Maneuver
• SCUBA — Submillimetre Common User Bolometer Array
• AOC — Award Of Contract
• BRAVO — Back-End Redesign for Added Value for Observers
• LRG — Luminous Red Galaxy
• LCDM — Lambda Cold Dark Matter
• NAO — National Astronomy Olympiad
• BITP — Bogolyubov Institute for Theoretical Physics
• R&I — Receiving and Inspection
• SMM — science mission management
• DSOB — Data Systems Operations Branch
• RNGC — Revised New General Catalog
• SIPS — Southern Infrared Proper Motion Survey
• MYSO — Massive Young Stellar Object
• RAG — Radio Astronomy Group
• FIRST — Far InfraRed and Submillimeter Space Telescope
• TAROT — Télescope à Action Rapide pour les Objets Transitoires
• STSDAS — Space Telescope Science Data Analysis System
• RPO — Research Programs Office
• RFT — Rich Field Telescope
• RPSS — Remote Proposal Submission System
• STEIS — Space Telescope Electronic Information System
• CVC — Current-to-Voltage Converter
• PFI — Partial Frame Image
• IRCS — Infrared Camera and Spectrograph
• ASCA — Advanced Satellite for Cosmology and Astronomy
• CG — Cometary Globule
• L — Lagrange
• OVIWG — Orbital Verification Implementation Working Group
• MIDAS — Munich Image Data Analysis System
• SESD — Science and Engineering Systems Division
• MAST — Multimission Archive at Space Telescope
• PPF — Payload Processing Facility (USAF)
• SRAA — Scenic Rim Astronomy Association, Inc.
• BLO — Bl Lac Object
• FPSA — FPA Structure Assembly
• AEDP — Astrometry and Engineering Data Processing
• UKST — United Kingdom Schmidt Telescope
• BEM — Bug-Eyed Monster (Late 40's-early 50'soft-used, and still in use, Sci-Fi term)
• CADC — Canadian Astronomical Data Center
• MCG — Morphological Catalog of Galaxies
• SANSA — South African National Space Agency
• TUASB — Tokyo University Institute of Space and Aeronautical Science Bulletin
• CIB — Cosmic Infrared Background
• QEH — Quantum Efficiency Hysteresis

• AEG — Astro Event Group
• IPPW — International Planetary Probe Workshop
• CXO — Chandra X-ray Observatory
• JOP — Joint Observing Program
• HLO — High Light Output
• OC — Open Cluster
• DCEP — Delta Cepheid
• BOAO — Bohyunsan Optical Astronomy Observatory
• MOTV — Manned Orbital Transfer Vehicle
• UCSD — University of California San Diego
• DVA — Detector Vacuum Assembly
• PNN — Planetary Nebula Nucleus
• ELIAS — European Large Area ISO Survey
• FOCAS — Faint Object Classification and Analysis System
• OSCAR — Orbital Satellite Carrying Amateur Radio
• CC — Candidate Companion
• LINER — Low Ionization Nuclear Emission Region
• BST — British Summer Time [GMT 0100]
• IRTF — Infrared Telescope Facility
• TML — Total Mass Loss
• PNS — Pulsed Neutron Source
• ALAT — Airborne Large Aperture Telescope
• ODL — Observation Data Log
• CRAP — Completely Radical Anthropic Principle
• EAAE — European Association for Astronomy Education
• BDEC — Bendix Field Engineering Corporation
• FFD — First Fixation Duration
• TUASR — Tokyo University Institute of Space and Aeronautical Science Report
• SEI — Space Exploration Initiative
• REPT — Relativistic Electron-Proton Telescope
• MS — Meteor Scattering
• VIMOS — Visible Multiobject Spectrograph
• SAREX — Space Amateur Radio Experiment
• SSP — Surface Science Packages
• SEP — System Enhancement Plan
• XIS — X-ray Imaging Spectrometer
• OPO — Operations Project Office
• SJR — Software Justification Report
• AAT — Anglo-Australian Telescope
• UNPSA — United Nations Programme on Space Applications
• ITA — Institute of Theoretical Astronomy
• VRSD — Verification Requirements and Specifications Document
• SXARI — SX ARIetis
• SUGRA — Supergravity
• LFAE — Light Field Attribute Explorer
• N — Nova
• OCX — observation comments file
• PDBI — Plateau de Bure Interferometer
• EAFB — Edwards Air Force Base
• SSPRV — Space and Solar Power Review

• SPSS — Science Planning and Scheduling System
• ETR — Engineering Tape Recorder
• MPCS — Minor Planet circulars Supplement
• GEM — Galileo Europa Mission
• DIG — Dwarf Irregular Galaxy
• RLOF — Roche Lobe Overflow
• BATC — Beijing-Arizona-Taiwan-Connecticut
• DIB — Diffuse Interstellar Band
• SS — Safing System
• CHZ — Circumstellar Habitable Zone
• STIF — Science and Technology Information Facility
• CTIO — Cerro Tololo Inter-American Observatory
• PW&SO — Publications of the Warner Swasey Observatory
• XSC — Extended Source Catalog
• ATCA — Australia Telescope Compact Array
• ETRD — Engineering Tape Recorded Data
• CINEOS — Campo Imperatore Near-Earth Object Survey
• PWD — Pre-White Dwarf
• SWAN — Solar Wind ANisotropy
• TASS — The Amateur Sky Survey
• OPD — Operations and Data Processing Division
• PVTEL — PV TELescopii
• ASKAP — Australian Square Kilometre Array Pathfinder
• SS — System Simulator
• IV — intra vehicular
• SVPHA — Soviet Physics Astronomy
• MOID — Minimum Orbit Intersection Distance
• NEO — Near-Earth Object - Non-combatant Evacuation Operations
• PROS — Post Reduction Offline Software
• SOSYR — Solar System Research
• UGWZ — UG WZ Sagittae
• LWS — Long-Wave Spectrograph
• PASP — Proceedings of the Astronomical Society of the Pacific
• LTM — Like The Moon
• CSV — Catalog of Suspected Variables
• NOMAD — Naval Observatory Merged Astrometric Dataset
• AGAPE — Andromeda Galaxy and Amplified Pixels Experiment
• LOTOSS — Lick Observatory and Tenagra Observatory Supernova Searches
• EIT — Extreme Ultraviolet Imaging Telescope
• ASAS — All Sky Automated Survey
• MGS — Mars Global Surveyor
• APSB — Advance Planning Systems Branch
• DES — Dark Energy Survey
• SID — Software Implementation Directive
• TAC — telemetry and command processor
• TT — Terrestrial Time (replaced Ephemeris Time, ET)
• UMCP — University of Maryland College Park
• SAS — Science Analysis Software
• RC — Ritchey-Chretien
• PSI — Planetary Science Institute

• ISPM — International Solar Polar Mission
• OV — Orbital Verification
• SDA — Science Data Analyst Small Computer Systems Interface
• ACM — Asteroids Comets Meteors
• BAV — Bundesdeutsche Arbeitsgemeinschaft fur Veraenderliche Sterne
• SDAS — Scientific Data Analysis System
• ♅ — Uranus
• DAV — Deerlick Astronomy Village
• AAAM — Active Amateur Astronomers of Maryland
• CCO — Central Compact Object
• DRS — Direct Receiving Station
• OAO — Orbiting Astronomical Observatory
• WIRCAM — Wide-field InfraRed Camera, instrument on the Canada-France-Hawaii Telescope
• FGC — Flat Galaxy Catalogue
• CRTS — Centre Royal de Teledetection Spatiale
• DM — Dark Matter
• CSPAR — Center for Space Plasma and Aeronomic Research
• PSR — Project Status Review
• XMM — X-ray Multi- Mirror satellite
• OT — Off-Topic
• TO — target of opportunity
• CDIMP — Catalogue of Discoveries and Identifications of Minor Planets
• SSU — Steady State Universe
• SHAD — Stellar Horizon Attitude Determination
• ADS — Aitken Double Stars
• FGSAA — FGS Access Area
• ICF — Intrinsic Correlation Function
• SMBH — Super Massive Black Hole
• MOSES — Mission Operations and Systems Engineering Support
• FEB — Falling-Evaporating Body
• CP — Chemically Peculiar
• SIB — Science Instrument Branch
• WKAA — West Kentucky Amateur Astronomers
• MV — absolute visual magnitude
• CNES — Centre National d'Etude Spatiales
• RSG — Red Super Giant
• AAS — Archaeology Astronautics and Seti
• SDM — Secondary Deployment Mechanism
• CNO — Carbon-Nitrogen-Oxygen
• LPICO — Lunar and Planetary Institute Contributions
• ECT — Equator Crossing Time
• WFS — Wave Front Sensor
• ISEE — International Sun Earth Explorer
• HDOS — Hughes Danbury Optical Systems (Danbury CT)
• ASWG — Astronomical Science Working Group
• TCG — Geocentric Coordinate Time
• OW — Outer Wall
• LN2 — liquid N2
• STIC — Space Telescope Institute Council
• QPSK — quadriture phase shift keying

• IPMO — Isolated Planetary-Mass Objects
• IB — Interstellar Band
• RDI — Radiation Driven Implosion
• ATPI — Astronomy Through Practical Investigations
• GCC — Globular Cluster Candidate
• SEST — Swedish-ESO Submillimetre Telescope
• SIMA — Secondary Mirror Incremental Motor Actuator
• GSSS — Guide Star Selection System
• SPS — Solar Power Satellite
• ERO — Extremely Red Object
• PEP — PhotoElectric Photometry
• CST — Constant Strain Triangle
• MBA — Main-Belt Asteroid
• PORTS — Preliminary Operations Requirements and Test Support
• STOCC — Space Telescope Operations Control Center (GSFC, Greenbelt MD)
• E — Eclipsing
• CNS — Computing and Network Services
• SFU — Space Flier Unit
• CMCC — Central Mission Control Centre
• DSOS — Dish Surface Optimization System
• VPC — viewport coordinates
• TAU — Thousand Astronomical Unit
• IARA — Italian Amateur Radio Astronomy
• OBP — Onboard Processor
• PNG — Planetary Nebulae, Galactic
• AH — ampere hours
• TIC — Tycho Input Catalog
• SHAR — Stellar Horizon Atmospheric Refraction
• MOR — Mission Operations Room
• CXBR — Cosmic X-ray Background Radiation
• SVWG — Science Verification Working Group
• LEST — Large Earth-based Solar Telescope
• TPI — Technical Proposal Instructions
• START — Solar Thermal Analysis Review and Training
• NAIF — Navigation Ancillary Information Facility
• VPO — VISTA Project Office
• APASS — AAVSO Photometric All-Sky Survey
• TLP — Transient Lunar Phenomenon
• PAR — Photon Activity Rate
• TRB — Test Review Board
• BCD — Blue Compact Dwarf
• NEAP — Near Earth Asteroid Prospector
• CSLG — Campus-wide Software License Grants Program
• MOXE — MOnitoring X-Ray Experiment
• STDN — Satellite Tracking and Data Network
• MW — Milky Way
• MBH — Massive Black Hole
• FASTT — Flagstaff Astrometric Scanning Transit Telescope
• BPM — Bruce Proper Motion
• LST — Large Stellar Telescope

• WDS — Washington Double Star
• DAG — Doğu Anadolu Gozlemevi
• ILOC — International Lunar Occultation Center
• SMC — Small Magellanic Cloud
• PWN — Pulsar Wind Nebula
• CTRF — Celestial and Terrestrial Reference Frames
• NLST — National Large Solar Telescope
• PRE — Photospheric Radius Expansion
• ODS — Our Dark Skies
• USMP — United States Microgravity Payload
• COMICS — Cooled Mid-Infrared Camera and Spectrometer
• IIPS — Interactive Image Processing System
• KIC — Kepler Input Catalog
• LP — Luyten Palomar
• CIAO — Coronagraphic Imager with Adaptive Optics
• OCST — Office of Commercial Space Transportation
• EUSO — Extreme Universe Space Observatory
• HESI — High Energy Solar Imager
• DS — Dwarf Star
• MLRS — McDonald Laser Ranging Station
• ESB — Engineering Support Branch
• MT — Moving Target
• MMTO — Multiple Mirror Telescope Observatory
• NIU — NASCOM Interface Unit
• SER — Systems Engineering Report
• ESIS — European Space Information System
• LOTIS — Livermore Optical Transient Imaging System
• FSS — Flight Servicing System
• UGSS — UG SS Cygni
• CGRO — Compton Gamma Ray Obsrvatory
• CRL — Compound Refractive Lens
• LMXB — Low-Mass X-Ray Binary
• SIS — SETI (Search for Extra-Terrestial Intelligence) Intercept System
• ECA — Electronics Control Assembly
• SINGS — Spitzer Infrared Nearby Galaxies Survey
• Q&A — qualification and acceptance
• SSSPM — SuperCOSMOS Sky Survey Proper Motion
• RC — Red Clump
• CTTS — Classical T Tauri Star
• SPG — Special Projects Group
• PTF — Palomar Transient Factory
• KM — Kilometres
• BZ — Brillouin zone - a uniquely defined primitive cell in reciprocal space
• HETE-2 — high energy transient explorer
• USOC — Unified System Orbit Computation
• XBP — X-Ray Bright Point
• OTS — Oasa Tamura Sugitani
• ABRIXAS — A BRoadband Imaging X-ray All-sky Survey
• RWA — Reaction Wheel Assembly
• ICRC — International Cosmic Ray Conference

• RORF — Radio/Optical Reference Frame
• SVAL — Soviet Astronomy Letters
• TRACE — Transition Region and Coronal Explorer
• GDSO — Georgi Dobrovolski Solar Observatory
• LOSS — Lick Observatory Supernova Search
• VVDS — VIMOS-VLT Deep Survey
• EAC — European Astronaut Centre
• DBW — decibel reference to 1 watt
• MAG — Magnitude
• TIB — Telescope Instrument Branch
• MKO — MAUNA KEA OBSERVATORY
• GC — Galactic Center
• PMPS — Parkes Multibeam Pulsar Survey
• SMC — Standard Model of Cosmology
• DCA — Detector Control Assembly
• NGST — Next Generation Space Telescope
• UCLAP — University of California Los Angeles - Astronomical Papers
• PWHHO — Publications of West Hendon House Observatory, Sunderland
• CGSS — Catalogue of Galactic S Stars
• MXRB — Massive X-Ray Binary
• SAOC — SAO Catalog
• LONEOS — Lowell Observatory Near-Earth-Object Search
• SEST — Swedish ESO Submillimeter Telescope
• TTC — telemetry, tracking, and command
• TSI — Total Solar Irradiance
• GPB — Group Parameter Block
• EOR — End of Record
• DSN — deep-space network
• ROTSE — Robotic Optical Transient Search Experiment
• EARS — Electrostatic Atmospherics Radio Sensor
• VISTA — Visible and Infrared Survey Telescope for Astronomy
• CFHT — Canada-France-Hawaii Telescope
• NS — Neutron Star
• SAO — Swinburne Astronomy Online
• EMP — Ephemerides of Minor Planets
• MMF — Moving Magnetic Feature
• BSS — Blue Straggler Star
• SMM — Spectro-Mirror Mechanism
• MONS — Measuring Oscillations in Nearby Stars
• IVC — Institute Visiting Committee
• SEA — Sensor Electronics Assembly
• SF — Star Field
• WDM — Warm Dark Matter
• SMO — Servicing Mission Office
• TAAS — The Albuquerque Astronomical Society
• PEPE — Plasma Experiment for Planetary Exploration
• ITT — International Telephone and Telegraph Corporation
• GIMP — Geomagnetically Induced Motion Problem
• KAO — Kuiper Airborne Observatory
• IRD — Interface Requirements Document

• WFCAM — Wide Field Camera
• SHP — Standard Header Packet
• NCSA — National Center for Supercomputer Applications (Urbana IL)
• MRSRM — Mars Rover and Sample Return Mission
• BCD — Basic Calibrated Data
• NGS — New Generation STAR
• CVP — Continuously Variable Planetary
• FPAS — FPA Shroud
• LINEAR — Lincoln Near Earth Asteroid Research
• TRACE — Transition Regional and Coronal Explorer
• SPST — Science Planning and Scheduling Team
• URPX — Uranian Ring Plane Crossing
• CRRES — Combined Release Radiation Effects Satellite
• GHZ — Galactic Habitable Zone
• IWCA — International Workshop on Cometary Astronomy
• PFR — Portable Foot Restraint
• WSAL — Winston-Salem Astronomical League
• ERRSAC — Eastern Regional Remote Sensing Applications Center
• DDA — Division on Dynamical Astronomy
• WGAS — Working Group on Astronomical Software
• SCOA — Smithsonian Contributions to Astrophysics
• ULX — Ultra-Luminous X-ray source
• SMS — Sun Moon and Stars
• ACA — Atacama Compact Array
• SCUBA-2 — Submillimetre Common User Bolometer Array 2
• EAPJ — Electronic AstroPhysical Journal Letters
• LP — Lonely Planet
• STVSW — Space Telescope Verification Software
• RTC — Researching The Cosmos
• UG — U Geminorum
• AUDS — ALFA Ultra Deep Survey
• COL — Collinder catalog
• LDE — Long Duration Event
• VF — Variable Frequency
• SCAC — Science Computing Advisory Commitee
• LETGS — Low Energy Transmission Gratings Spectrometer
• ECO — Earth crossing object
• SSO — Special Studies Office
• CSWA — Committee on the Status of Women in Astronomy
• NODO — NASA Orbital Debris Observatory
• SCP — Small Computer Systems Interface
• RRL — RR Lyrae
• BCVS — Bibliographic Catalogue of Variable Stars
• DCMF — Data Capture and Management Facility
• SETG — Search for Extra-Terrestrial Genomes
• WFAU — Wide-Field Astronomy Unit
• YSG — Yellow Super Giant
• SDF — Science Data Formatter
• PASA — Pan-Arab Space Agency
• ASW — Address and Synchronization Word

• JFC — Jupiter Family Comets
• GRB — Gamma Ray Bursters
• PFM — Pre-Flight Module
• BRAS — Baton Rouge Astronomical Society
• EF — Event Foreground
• LHS — Luyten Half-Second
• WAC — Wide Angle Converter
• IMIO — Image Input/Output
• RSB — Research Support Branch
• CAL — Casual Astronomy League
• EOL — Earth Observing Laboratory (formerly ATD)
• SVA — Soviet Astronomy
• MUSTANG — Multiplexed SQUID TES Array at Ninety GHz
• DE — Dwarf elliptical
• ADAS — Asiago DLR Asteroid Survey
• SIRD — Support Instrumentation Requirements Document
• GAAC — Gloucester Area Astronomy Club
• ASTRO — Autonomous Space Transport Robotic Operations
• CGRO — Compton Telescope
• TAMS — Terminal Age Main Sequence
• CANX — Canadian Advanced Nanospace Experiments
• SCARS — Science Computing & Research Support Division
• CHIP — Cosmic Hot Interstellar Plasma
• TB — Thermal Balance
• UAO — University of Arizona Observatories
• SEP — Solar Energetic Particle
• FEAT — Fine Error Averaging Test
• CTWG — Calibration Targets Working Group
• EPD — Expected Planetary Differences
• PRR — preliminary requirements review
• DDF — Directors Discretionary Funds
• PROPLYD — Protoplanetary Disk
• TAI — International Atomic Time (Temps Atomique International) [to 2015 July 1st, 35s ahead of UTC; from 2015 July 1st, 36s ahead of UTC.]
• FRB(S) — gamma ray burst(s)
• SCT — Schmidt-Cassegrain Telescope
• LFSA — List of Frequently Seen Acronyms
• CCMS — Command Control and Monitor System
• TBC — Time Base Correctors
• SIPE — Science Instrument Protective Enclosure
• LSA — Large Science Aperture
• HSI — Host System Interface
• LSB — Low Surface Brightness
• WF/PC — Wide Field/Planetary Camera
• AIM — Aeronomy of Ice in the Mesosphere
• SOARD — Steward Observatory Asteroid Relational Database
• PSR — Pulsar
• GRAB — Galactic Radiation and Background
• UKIDSS UKIRT — Infrared Deep Sky Survey
• SSD — Science Support Division
• XRB — X-Ray Background

• CEP — CEPheid
• CMOS — Complimentary Metal Oxide Semiconductor
• VVS — Vereniging voor Sterrenkunde
• ACT — Astrographic Catalog Tycho
• ORD — Operations Requirements Document
• US/PS — see PRESTO
• PEPSI — PEP System
• ECF — European Coordinating Facility
• SWRI — Southwest Research Institute
• LSVT — Large Solar Vacuum Telescope
• SSRT — Single Stage Rocket Technology
• WSGS — White Sands Ground Station
• RSN — Radio SuperNova
• OGLE — Optical Gravitational Lensing Experiment
• CCITT — Consultative Committee on International Telegraph & Telephone
• OST — Observation Sequence Table
• WINAR — Windsor Observatory Annual Report
• NLTT — New Luyten Two-Tenths
• GMOS — Gemini Multi-Object Spectrographs
• TC — Test Conductor (Controller)
• WRO — Warren Rupp Observatory
• VSSC — Vikram Sarabhai Space Centre
• ALTS — Astronomy Lunch Time Seminar
• SXG — Spectrum-X-Gamma
• PGPLOT — FORTRAN subroutine library for plotting graphics
• NDC — Network Data Center
• ACK — acknowldgement message
• SFD — SXT Full Disk
• JSGA — Japan Spaceguard Association
• SPB — Science Planning Branch
• STFS — Space Telescope Flight Software
• ACIS — Advanced CCD Imaging Spectrometer
• RCS — Readiness Control System
• IOTA — Infrared-Optical Telescope Array
• ODX — Occular Dynamic eXperiment
• SMA — Submillimeter Array
• PACS — Photoconductor Array Camera and Spectrometer
• VOS — Virtual Operating System
• PRB — Preliminary Review Board
• CODMAC — Committee on Data Management and Computing
• SIAF — Science Instrument Aperture File
• ACYG — Alpha CYGni
• R-L — Richardson-Lucy
• MLSO — Mauna Loa Solar Observatory
• LWP — Long Wavelength Primary
• CMD — Color-Magnitude Diagram
• LOFAR — Low Frequency Array
• AOSS — AURA Observatory Support Services
• CRAQ — Centre for Research in Astrophysics of Québec
• VLB — Very Long Baseline

• GKS — Graphic Kernel System
• MSO — Mount Stromlo Observatory
• MPP — multi-pinned phase
• DEFCAL — deflection calibration
• WAPP — Wide-base Arecibo Pulsar Processor
• GRS — Great Red Spot
• CFS — Chandrasekhar - Friedmann - Schutz instability
• STARS — Seismic Telescope for Astrophysical Research from Space
• SDD — Single Dish Data
• PO — Primary Object
• OSG — Observatory Support Group
• WBS — Wide Band Spectrometer
• NEAT — Near Earth Asteroid Tracking
• HPR — Hardware Problem Report
• TAAA — Tucson Amateur Astronomy Association
• FIRST — Faint Images of the Radio Sky at Twenty-centimeters
• PM — Primary Mirror
• SCP — Science Data Analyst
• GSP — General Support Pool
• AC — Ascendant Cusp
• WYBT — Whole Year Blazar Telescope
• SCMS — STScI Code Management System
• SAMPEX — Solar Anomalous And Magnetospheric Particle Explorer (spacecraft)
• PPM — Positions And Proper Motions (catalog)
• NESS — Near Earth Space Surveillance
• DRD — Data Requirements Document
• WFPC2 — Wide Field Planetary Camera-2
• SOGS — Science Operations Ground System
• PBO — Pine Bluff Observatory
• EPAO — Educational and Public Affairs Office
• WFAO — Wide Field Adaptive Optics
• AMASE — Astrophysics Multi-Spectral Archive Search Engine
• SOB — Science Observatory Branch
• IRS — International Reference Star
• WDS — Washington Double Star Catalog
• TFOV — target field of view
• LDS — Luyten Double Star
• BSS — Bigelow Sky Survey
• NGC — New General Catalog
• UVCS — Ultraviolet Coronal Spectrometer
• WFIS — Wide-Field-of-view Imaging Spectrometer
• EC — Embedded Cluster
• IRIS — InfraRed Imaging Surveyor
• GRU — Ground Replaceable Unit
• XANES — X-Ray Near Edge Spectroscopy
• GRAND — Gamma Ray and Neutron Detector (NASA)
• LSG — Liaison Scientists Group
• NTR — Nuclear Thermal Rocket
• CCS — Cool Carbon Star
• CCAS — Cape Cod Astronomical Society

• HSC — Hierachical Storage Controller
• BHXRT — Black Hole X-Ray Transient
• ♆ — Neptune
• CDBS — Calibration Data Base System
• WSO — World Space Observatory
• SDS — Star Diagnosis System
• EMU — Extra-vehicular Mobility Unit
• C&T — Communications and Tracking
• SOFIA — Stratospheric Observatory for Infrared Astronomy
• CCDS — Centers for the Commercial Development of Space
• SCL — Service Control Level
• SB — Super Bright
• TRES — Transatlantic Exoplanet Survey
• SCO — Software Change Order
• SSS — SuperCOSMOS Sky Surveys
• CSM — Central Star Magnitude
• PDS — Photometric Data Systems
• SPYBAL — spectrum Y balance
• EOT — End Of Tape
• STAC — Space Telescope Advisory Council
• MOSS — Moving Object Support System
• WSF — Wake Shield Facility
• PSS — Palomar Sky Survey
• DCB — Design Change Board
• IAU — International Astrophysical Union
• SXPHE — SX PhoEnicis
• VST — VLT Survey Telescope
• NFF — New Firm Formation
• CVA — Central Valley Astronomers
• EO — Earth Observatory
• PZT — Photographic Zenith Tube
• ORFEUS — Orbiting and Retrievable Far and Extreme Ultraviolet Spectrometer
• EDB — Engineering Data Base
• EB — Eclipsing Beta
• RAMBO — Robust associations of massive baryonic objects
• CGCS — Cool Galactic Carbon Star
• MUF — Mysterious Unknown Force
• MI — Maximum Influence
• LAL — LALande
• VMO — Valley of the Moon Observatory
• SAD — Supra-Arcade Downflow
• RCB — R Coronae Borealis
• DE — Detector Efficiency
• EGRET — Energetic Gamma-Ray Experiment Telescope
• SSA — Star Selector Assembly
• FIGV — Factor Inercial de Ganho solar do enVidracado
• WFPC2 — Wide Field and Planetary Camera 2
• TO — Texas Instruments
• MOMV — Manned Orbital Maneuvering Vehicle
• AMSU — Advanced Mass Spectrometry Unit

• STAN — Space Telescope Analysis Newsletter
• VLM — Very Low Mass
• R — Ray
• RSFC — Radially Stratified Flame Core
• EBA — Electronics Bay Assembly
• IO — Interacting Object
• SBIG — Santa Barbara Instrument Group
• TAMS — Terminal-Age Main Sequence
• MPP — Multi-Pinned-Phase
• ESTEC — European Space Research and Technology Center
• PASS — POCC Application Software Support
• WIYN — Wisconsin, Indiana University, Yale University, and NOAO (National Optical Astronomy Observatories) Observatory
• TSRS — Trieste Solar Radio System
• SFN — Star Formation Newsletter
• EBL — Extragalactic Background Light
• R&R — Reproducibility And Repeatability
• ISSA — Infrared Sky Survey Atlas
• SIMM — Standard Inline Memory Module
• DCL — Digital Control Language
• MTL — Mission Time Line
• QBSA — Quarterly Bulletin on Solar Activity
• GASA — Graduate Astronomy Students Association
• OAOT — Orbiting Astronomical Observatory Technology
• SRC — Science Research Council (formerly DSIR) (U.K.)
• MUNICS — MUnich Near-Infrared Cluster Survey
• EGP — Extrasolar Giant Planet
• LPCI — Lunar Phases Concept Inventory
• SPC — Short Period Comets
• RFO — Robert Ferguson Observatory
• UVOT — Ultraviolet Optical Telescope
• MHGL — Mexican Hat Gravitational Lens
• LM — Low Mass
• CSMA — Committee on the Status of Minorities in Astronomy
• LTP — Lunar Transient Phenomenon
• HRC — High Resolution Camera
• WBS — Work Breakdown Schedule
• SNY — Starry Night Backyard
• MDB — multiplexed data bus
• LS — List Star
• CODE — Creation Out of Deep Energy
• WHDF — William Herschel Deep Field
• ACTS — Advanced Communications Technology Satellite
• SDAS — Scarborough And District Astronomy Society
• FD — File Descriptor
• CRSR — Center for Radiophysics and Space Research
• INFOL — Ingredient Necessary FOr Life
• F — Fraunhofer lines
• LTT — Luyten Two-Tenths
• TAC — The Astronomy Connection
• TLE — Total Lunar Eclipse

• SLSN-I — hydrogen-poor SLSNe
• DNS — Double Neutron Star
• BATTERS — Bisei Asteroid Tracking Telescopes for Rapid Survey
• FTETTM — From The Earth To The Moon
• RS — Reed-Solomon error detection
• MFP — magnetic field perturbation theory
• EED — Extracted Engineering Data
• ECEF — EarthCentered EarthFixed
• CMF — Core Mass Function
• AER — Astronomy Education Review
• SS — Shooting Stars
• HVPS — High Voltage Power Supply
• HR — Hertzsprung-Russell
• RE — ROSAT (ROentgen SATellite) EUV (Extreme Ultra-Violet)
• NTT — New Technology Telescope
• TCS — Thermal Control System (Subsystem)
• XRF — X-Ray Flash
• ULIRG — Ultraluminous Infrared Galaxy
• LIC — local interstellar cloud
• PMS — Pre–Main Sequence
• VMC — Velocity Modulating Camera
• SIP — Software Implementation Plan
• MSC — Mission Support Calibration
• ASIAA — Academia Sinica Institute of Astronomy and Astrophysics
• VERA — VLBI Exploration of Radio Astrometry
• WAT — Wide Angle Tail
• EME — Earth-to-Moon-to-Earth
• UXOR — UX ORionis objects
• SSE — Star Selector Encoder
• GRB(S) — gamma ray burst(s)
• BIMA — Berkeley-Illinois-Maryland Array
• UGWZ — U Gem variable type star (WZ Sagittae sub-type)
• NIR — Near Infrared Research
• WCT — Window Correction Table
• UV-VIS — Ultraviolet - Visible
• ILRT — intermediate-luminosity red transients
• DCX — Delta Clipper Experimental
• SSC — STEIS Steering Committee
• TSS — Texas supernova survey
• RSA — Revised Shapley-Ames
• CA — Coronagraphic Apodizer
• MPIA — Max Planck Institute for Astronomy
• IMAGE — Imager for Magnetopause to Auroral Global Exploration
• TR — TRansit
• GSY — Galactic Standard Year
• CTA — Computer Technology Associates (GSFC)
• MPPG — Mars Program Planning Group
• VFIR — Very Far Infra-Red
• ASWG — ATST (Advanced Technology Solar Telescope) Science Working Group
• EVGA — European VLBI Group for Geodesy and Astrometry

• MACRO — Monopoles, Astrophysics, and Cosmic Ray Observatory
• SPD — Science Programs Division
• ARAS — Astronomical Ring for Access to Spectroscopy
• MOST — Microvariability and Oscillations of STars Telescope
• AP — Astral Projection
• QHO — Quail Hollow Observatory
• NA — Negative Alignment
• SIDS — SI Detector System
• SLOWPOKES — Sloan Low-mass Wide Pairs of Kinematically Equivalent Stars
• WUVC — Wezen Updated Variability Catalogue
• MPEC — Minor Planets Electronic Circular
• NT — Non-Thermal
• VMOA — Valley of the Moon Observatory Association
• OAO — Okayama Astrophysical Observatory
• TESS — Transiting Exoplanet Survey Satellite
• SZE — Sunyaev-Zeldovich Effect
• ICET — International Center for Earth Tides
• NSUM — Non-Spatial Universal Mechanics
• MEPCO — Meeting of European Planetary and Cometary Observers
• GCI — geocentric intertial
• NCP — North Celestial Pole
• MPS — Microlensing Planet Search
• DIN — Day Into Night
• TMN — Tokyo Meteor Network
• BHC — Black Hole Candidate
• SPSO — Science Program Selection Office
• HKO — Hong Kong Observatory
• DBSA — Database and System Administration team
• FFI — Full Frame Image
• IAPPP — International Amateur/Professional Photoelectric Photometry
• SDH — science data header
• MMTF — Maryland-Magellan Tunable Filter
• NGT — Next Generation Telescope
• HAC — Huachuca Astronomy Club
• GN — Galactic Nebula
• SOFA — Selectable Optical Filter Assembly
• UESAC — Uppsala-ESO Survey of Asteroids and Comets
• SSB — Science Software Branch
• CCF — Cosmogenic Correlation Factor
• HGD — Hot Gas Discharge
• WMAP — Wilkinson Microwave Anisotrophy Probe
• CGCS — Catalogue of Galactic Carbon Stars
• PGC — Principal Galaxy Catalog
• ARTEMIS — Advanced Relay TEchnology MISsion
• JAC — Japan Astronomical Circular
• TSS — Targeted Search System
• NIR — Near Infrared Reflection
• LMT — Large Millimeter Telescope
• GGC — Giant Gravity Core
• SSPS — Sky Survey Prototype System

• WTTS — Weak-Line T-Tauri Star
• SH — Super Hot
• AP.J — Astrophysical Journal
• PCAS — Planet-Crossing Asteroid Survey
• BO — Biological Origin
• IYA — International Year of Astronomy
• OHD — Observational Hubble-parameter Data
• ACPG — Astronomical Community Participation Group
• B — Barnard
• BLAST — Balloon-borne Large Aperture Submillimeter Telescope
• CAMC — Carlsberg Automatic Meridian Circle
• ♇ — Pluto
• RMS — Republic Management Systems, Inc.
• WFPCII — Replacement For WFPC
• PWLA — Portable Work Light Assembly
• MIPS — Multi-band Imaging Photometer
• OZ — Objective Zenith
• SGRA — School of Galactic Radio Astronomy
• STAT — Space Telescope Astrometry Team
• TAA — Tasmanian Amateur Astronomers
• RTPW — Rapid True Polar Wander
• GU — Galactic Unit
• NDV — NASP Derived Vehicle
• CIDA — Cometary Interplanetary Dust Analyzer
• WYAS — West Yorkshire Astronomical Society
• VTT — Vacuum Tower Telescope
• BCEP — Beta CEPhei
• LTSA — Long-Term Space Astrophysics