toggle menu

Home / Scientific & Educational / Astronomy

Scientific & Educational >> Astronomy Abbreviations

Look through 3189 acronyms and abbreviations related to Astronomy:

• IMHO — In My Humble Opinion
• LAN — Local Area Network
• HIV — Human Immunodeficiency Virus I
• PPNE — Proto-Planetary Bebulae
• N/A — Not Applicable
• PNX — Pulsar Network Exchange
• ETA — Estimated Time of Arrival
• MADOO — Madras Observatory Astronomical Observations
• HIPAA — Health Insurance Portability and Accountability Act of 1996
• ROM — Read-Only Memory
• LUNNO — Lunar Upper Navigation Nacelle Orb
• URL — Universal Resource Locator
• LASER — Light Amplification By Stimulated Emission Of Radiation (cf. Maser)
• FTP — File Transfer Protocol
• 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
• AHRQ — Agency for Health, Research, and Quality
• PIFOV — Planet In Field Of View
• MM — Millimeter
• BTW — By The Way
• A&ARV — Astronomy and Astrophysics Review
• B-V — Binary - Variable star
• ICD — Interface Control Document
• CPU — Central Processing Unit
• E&PSL — Earth and Planetary Science Letters
• ROM — Rough Order of Magnitude
• A — Ampere
• JAAVSO — Journal of the American Association of Variable Star Observers
• PPM — parts per million
• ZAND — Z ANDromedae
• P&SS — Planetary and Space Science
• R&QA — Reliability & Quality Assurance
• WHO — World Health Organization
• FIFO — First In, First Out
• COB — close of business (End of duty day)
• QJRAS — Quarterly Journal of the Royal Astronomical Society
• M&PS — Meteoritics and Planetary Science
• ZEPLIN — ZonEd Proportional scintillation in LIquid Noble gases
• XEUS — X-Ray Evolving Universe Spectroscopy Mission
• ☿ — Mercury
• PDR — Preliminary Design Review
• JASEG — Journal of the Astronomical Society of Egypt
• SADE-1 — Solar Array Deploy Electronics-11
• JAPAS — Journal of Astrophysics and Astronomy Supplement
• P/SOS — Payload/Spacecraft Operations Simulator
• IP — Internet Protocol
• SAAOC — South African Astronomical Observatory Circular
• CDR — Critical Design Review

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

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

• CFR — Code of Federal Regulations
• DD — Deputy Director
• DDL — Data Definition Language
• KG — Kilogram
• VHF — Very High Frequency
• FDA — Food Drug Administration
• DMSP — Defense Meteorological Satellite Program (U.S.)
• SDD — Software Design Document
• MHZ — Megahertz (Megacycles Per Second)
• DCC — Document Control Center
• LOE — Level Of Effort
• DOE — United States Department of Energy (government)
• ADS — Astrophysics Data System
• NSO — National Solar Observatory
• AMA — American Medical Association
• LOS — Line Of Sight
• DC — Direct Current
• CEN — Committee European de Normalisation
• SISEX — Shuttle Imaging Spectrometer Experiment
• FFT — Fast Fourier Transform
• HCFA — Health Care Financing Administration
• NEC — National Electrical Code
• CM — Centimeter
• SIR — Shuttle Imaging Radar
• JAXA — Japan Aerospace Exploration Agency
• NIOSH — National Institute for Occupational Safety and Health
• FTA — Fault Tree Analysis
• CRF — Case Report Form
• NAM — National Association of Manufacturers
• DOMSAT — Domestic Communications Satellite System
• LEO — Low Earth Orbit (satellite communications)
• NIST — National Institute of Standards and Technology
• OMB — Office of Management and Budget (U.S.)
• BHB — Black Hole Bang
• EDT — Eastern Daylight Time
• ACS — American College of Surgeons
• PHP — Planetary Horizontal Platform
• ACE — Advanced Composition Explorer
• 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
• UTC — Coordinated Universal Time
• NSF — National Sanitation Foundation
• UHF — Ultra High Frequency (300-3000 MHz; 1m-10cm)
• FTE — Full-Time Employee
• ISRO — Indian Space Research Organisation
• I/O — Input/Output
• CM — Configuration Management
• LED — law enforcement desk; light emitting diode
• PSI — Pounds Per Square Inch (Static Pressure)
• OSO — Orbiting Solar Observatory
• HQ — Headquarters (HDQ Preferred)

• AAAS — American Association for the Advancement of Science
• HZ — cycles per second (hertz)
• STR — Software Test Report
• NAS — United States National Academy of Sciences
• FTC — Federal Trade Commission (U.S.)
• HEAO — High Energy Astronomy Observatory
• OSHA — Occupational Safety and Health Act (1970)
• HR — HUMAN RESOURCES
• BOD — Board of Directors (Budget)
• TLA — Three Letter Abbreviation
• A/N — Alphanumeric
• SIG — Special Interest Group
• ACRIM — Active Cavity Radiometer Irradiance Monitor (EOS)
• HOPPS — Hospital Outpatient Prospective Payment System
• BCD — Binary-Coded Decimal
• CRC — Contrôle de Redondance Cyclique (French: Cyclic Redundancy Check)
• 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.
• NSA — National Security Agency
• GIF — Graphic Interchange Format
• BMA — British Medical Association
• TV — Television
• ADF — Astrophysics Data Facility
• NEMA — National Electric Manufacturer's Association
• M — Meter
• BER — Bit-Error Rate
• PM — Project Manager
• RFI — Radio Frequency Interference
• AAMI — Association for the Advancement of Medical Instrumentation
• GAO — Government Accountability Office [formerly the General Accounting Office]
• NOAA — National Oceanic and Atmospheric Administration (US)
• CAP — College of American Pathologists
• EOY — End-Of-Year
• AAMC — American Association of Medical Colleges
• AMU — Atomic Mass Unit
• CPI — Continuous Process Improvement
• ISF — Industrial Space Facility
• PAH — Polycyclic Aromatic Hydrocarbon
• WMO — World Meteorological Organization (ICSU)
• ISS — International Space Station
• CASE — computer-automated software engineering
• SN — Space Network
• NIH — NATIONAL INSTITUTE OF HEALTH
• OS — Operating System
• BAE — British Aerospace Systems, LTD
• NAI — No Action Indicated (Most Favorable Food & Drug Administration Post-inspection Classification)
• IEEE — Institute of Electrical and Electronic Engineers, Inc.
• RISC — Reduced Instruction Set Computer
• JPL — Jet Propulsion Laboratory (California Institute of Technology) (NASA)
• BAT — Burst Alert Telescope
• GE — General Electric American Communications Inc.

• ISO — Infrared Space Observatory
• GMT — Greenwich Mean Time (Zulu)
• COMSP — Commercial Space
• KHZ — kilohertz (1000 cycles per second)
• 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
• DMA — direct memory access (computer term)
• NASDA — National Space Development Agency of Japan
• AHA — American Hospital Association
• AOCS — Attitude and Orbit Control System
• IR — Infrared
• DBMS — Data Base Management System
• HHS — Health and Human Services Department
• K — Kilo-
• HV — High Voltage
• BPS — bits per second
• JSC — Johnson Space Center (Houston, TX)
• IRB — Institutional Review Board
• POS — Point of Service Plan
• COTS — Commercial Off the Shelf Software
• CW — Clockwise
• CCTV — Closed Circuit Television
• CITECH — Center for Information on Technology in Healthcare
• MS — Millisecond
• FAR — Flight Acceptance Review
• OTA — Optical Telescope Assembly
• NAFTA — North American Free Trade Agreement
• IEC — International Electrotechnical Commission
• EOL — End Of Line
• SPR — Software Problem Report
• NIST — National Institute of Standards & Technology (US)
• BUBES — Bulletin of the University of Besancon Observatory
• BNSC — British National Space Centre
• EDO — Extended Duration Orbiter
• APS — American Physical Society
• RMS — root mean square (preferred over "RMS")
• NBS — National Bureau of Standards (US)
• FOS — Faint Object Spectrograph
• CHSAJ — Chinese Society of Astronautics Journal
• MMS — Module Management System
• HF — High Frequency
• LOR — Lunar Orbit Rendezvous
• AJ — Astronomical Journal
• A&A — Astronomy and Astrophysics
• USGS — United States Geological Survey (DOI)
• MSFC — Marshall Space Flight Center (Huntsville AL)
• ISAS — Institute of Space and Astronautical Sciences (Japan)
• SSI — Space Studies Institute
• SF — Science Fiction
• COBE — Cosmic Background Explorer Satellite (NASA)
• ADC — Analog-Digital Converter

• SNR — Signal-to-Noise Ratio
• APO — Apache Point Observatory
• CDRH — Center for Devices and Radiological Health (Food & Drug Administration)
• UV — Ultraviolet (Light)
• CSTC — Consolidated Space Test Center
• RAS — Royal Astronomical Society
• NRC — National Response Center
• LANL — Los Alamos National Laboratory
• UCL — University College London
• ASQ — Alpha System Qualification
• PR — Public Relations
• DAR — Defense Acquisition Regulation
• FAC — Facilities
• DIST — Distance
• IIRC — If I Recall Correctly
• VLF — Very Low Frequency
• CCAFS — Cape Canaveral Air Force Station, an air force base in Florida where NASA launches satellites from.
• GMT — Giant Magellan Telescope
• SAS — Small Astronomy Satellite
• CEMDA — Celestial Mechanics and Dynamical Astronomy
• A&G — Astronomy and Geophysics
• IAU — International Astronomical Union
• ADA&A — Advances in Astronomy and Astrophysics
• CG — Center of Gravity (DXS)
• DSN — Deep Space Network - network of large antennas and communication facilities.
• DRS — Data Relay Satellite
• CHJAA — Chinese Journal of Astronomy and Astrophysics
• ADIL — Astronomy Data Image Library
• ERBS — Earth Radiation Budget Satellite
• TAG — Technical Advisory Group for Biological Control Agents of Weeds
• SME — Solar Mesosphere Explorer
• CDM — Cold Dark Matter
• WG — Working Group
• FM — Flight Model
• UPS — Uninterruptible Power Supply
• ATO — Abort To Orbit
• BASD — Ball Aerospace Systems Division
• GR — General Relativity
• RSA — Russian Space Agency
• JILA — Joint Institute for Laboratory Astrophysics
• ALEXIS — Array of Low Energy X-ray Imaging Sensors
• ESTEC — European Space Research and Technology Centre
• LOI — Lunar Orbit Insertion
• ROTFL — Roll On The Floor Laughing
• ABBOO — Abbadia Observatory Observations
• SARA — Society of Amateur Radio Astronomers
• RSN — Real Soon Now [which may be a long time coming]
• ARC — Ames Research Center (NASA)
• NASP — National Aerospace Plane
• RADAR — RAdio Detection And Ranging

• LARC — Langley Research Center (NASA)
• DFRC — Dryden Flight Research Center
• WP — Work Package
• N — Newton
• BBF — Bursty Bulk Flow
• RTG — Radioisotope Thermoelectric Generator
• MECO — Main Engine Cutoff
• HP — Hewlett Packard's
• SCA — Shuttle Carrier Aircraft
• SVD — Singular Value Decomposition
• DUNRE — Dunsink Observatory Reprints
• ESAJ — European Space Agency Journal
• USP — United States Pharmacopeia
• DSMB — Data Safety Monitoring Board
• FAT — File Allocation Table
• M&P — Materials and Processes
• EC — European Community
• CHJSS — Chinese Journal of Space Science
• COCAM — Contributions from the Cambridge Observatory England
• 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
• CCD — Charge Coupled Device - a device for the movement of electrical charge.
• SRL — Space Radar Laboratory
• FD — Flight Day
• PDP — Postinsertion Deorbit Preparation
• LBNL — Lawrence Berkeley National Laboratory (US)
• FF — Flat Field
• MITI — Ministry of International Trade & Industry (Japan)
• PPARC — Particle Physics and Astronomy Research Council
• ASC — Ambulatory Surgery Center
• AURA — Association of Universities for Research in Astronomy, Inc.
• NRL — Naval Research Laboratory
• AGB — Asymptotic Giant Branch
• CHSST — Chinese Space Science Technology
• ASI — Agenzia Spaziale Italiana
• MOSPO — Mobile Satellite Photometric Observatory
• ALS — Advanced Launch System
• 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)
• OSSE — Oriented Scintillation Spectrometer Experiment
• IPAC — Infrared Processing and Analysis Center
• JSAR — Journal of Space Astronomy Research
• DEC — Declination
• ROSAT — Roentgen Satellite
• CFA — Harvard-Smithsonian Center for Astrophysics, USA
• RCS — Radar Cross Section
• ASM — American Society for Microbiology
• FITS — Flexible Image Transport System
• NASA — National Aeronautics and Space Administration (US)
• FU — Flight Unit
• OIG — Office of Inspector General
• APJS — Astrophysical Journal Supplement Series

• N — Nitrogen
• GSFC — Goddard Space Flight Center (Greenbelt, MD)
• ASTRA — Advanced Star Tracker
• PCM — Pulse-Code Modulation
• KB — Kilobyte: One thousand and twenty-four bytes kbps kilo bit per second
• CHARA — Center for High Angular Resolution Astronomy
• DUNOP — Dunsink Observatory Publications
• NORAD — North American Air Defense (Command)
• ND — NASA Document
• ST — Space Telescope
• AGU — American Geophysical Union
• EUVE — Extreme Ultraviolet Explorer (NASA Satellite)
• CASS — Center for Advanced Space Studies
• DFRF — Dryden Flight Research Facility
• PHRMA — Pharmaceutical Research and Manufacturers of America (formerly PMA, Pharmaceutical Manufacturers Association)
• NSSDC — National Space Science Data Center (Greenbelt, MD)
• ANS — Astronomical Netherlands Satellite
• CHIPS — Cosmic Hot Interstellar Plasma Spectrometer
• BAO — Beijing Astronomical Observatory
• DSCS — U.S. Defense Satellite Communications System
• VBR — Variable Bit Rate (ATM)
• D — Diameter
• WET — Whole Earth Telescope
• MCC — Mission Control Center (JSC)
• JOP — Jupiter Orbiter Probe
• FHST — fixed-head star tracker
• BASBR — Bulletin of the Astronomical Society of Brazil
• NABR — National Association for Biomedical Research
• D — Director
• AE — Adverse Event
• AG — Astronomische Gesellschaft
• MIT — Massachusetts Institute of Technology (U.S.)
• SI — Scientific Investigation
• HD — Hilary Duff
• TAC — Telescope Allocation Committee
• ASTHE — Astronomical Herald
• KSC — John F. Kennedy Space Center
• GHZ — Gigahertz
• CASJ — Canadian Aeronautics and Space Journal
• LCC — Launch Control Center (KSC)
• ERS — Earth Resources Satellite
• ORIG — Origin
• ESRO — European Space Research Organisation
• PDS — Planetary Data System
• CRB — Change Review Board
• MOL — Manned Orbiting Laboratory
• AMPS — Atmospheric Magnetospheric Plasma System
• ASRM — Advanced Solid Rocket Motor
• SIM — Simulator
• ARMOL — Armagh Observatory Leaflet

• BAA — British Astronomical Association
• FRR — Flight Readiness Review
• MMDA — Michigan Medical Device Association
• SRM — Solid Rocket Motor
• DIN — Deutsches Institut für Normung.
• ISU — International Space University
• ADS — Astrophysics Data Service
• GEM — Giotto Extended Mission
• ST — Star Tracker
• PR — Problem Report
• CO — Contracting Officer
• ASCA — Advanced Satellite for Cosmology & Astrophysics
• CHIME — College of Healthcare Information Management Executives
• IDE — Investigational Device Exemption
• CMB — Cosmic Microwave Background
• IPA — Individual Practice Association
• VLSI — Very-Large-Scale Integration
• DOH — Department of Health (various countries)
• MTPE — Mission To Planet Earth
• DDCMP — Digital Data Communications Message Protocol
• JAMA — Journal of the American Medical Association
• ASA — Astronomical Society Of The Atlantic
• JANSC — Journal of Astronautical Sciences
• VMS — Virtual Memory System
• ISO 14155 — Current Widely Accepted Standard
• ESDAC — European Space Data Center
• BTOK — Bulletin of the Tokyo Astronomical Observatory
• TM — Telemetry
• IUS — Inertial UPper Stage (was Interim UPper Stage)
• LMSS — Lunar Mapping and Survey System
• NOAO — National Optical Astronomy Observatories (Tucson, AZ)
• ABHI — Association of British Health-Care Industries
• SUMS — Shuttle Upper Atmosphere Mass Spectrometer
• APL — Applied Physics Laboratory (at Johns Hopkins)
• SST — States Supersonic Transport
• RTLS — Return To Launch Site
• MASER — microwave amplification by stimulated emission of radiation
• F — Degrees Fahrenheit
• AMS — American Meteor Society
• BLOB — Binary Large Object
• DMERC — Durable Medical Equipment Regional Carrier
• WGPSN — Working Group for Planetary System Nomenclature
• RVU — Relative Value Unit
• WAIS — Wide Area Information Server
• VSOP — VLBI Space Observatory Program
• INS — Inertial Navigation System
• AOA — Angle Of Attack
• ASHP — American Society of Hospital Pharmacists
• SAR — synthetic aperture radar (satellite)
• AXAF — Advanced X-Ray Astrophysics Facility

• AFSD — Air Force Space Division
• NDA — New Drug Application
• GCP — Good Clinical Practice
• SLAR — Side-Looking Airborne Radar
• SEDS — Students for the Exploration and Development of Space
• CMP — Competitive Medical Plan
• CASJQ — Canadian Aeronautics and Space Journal Quarter
• LPL — Lunar and Planetary Laboratory
• AO — Adaptive Optics
• CPI — characters per inch
• MGMA — Medical Group Management Association
• IUE — International Ultraviolet Explorer
• COWRO — Contributions from the Wroclaw Astronomical Observatory
• PHS — Public Health Service (U.S.)
• SDR — System Design Review
• AAVSO — American Association of Variable Star Observers
• NASM — National Air and Space Museum
• EIA — Extended Interaction Amplifier
• CADC — Canadian Astronomy Data Centre
• MMU — Manned Maneuvering Unit
• LM — Lunar Module
• OSS — Office of Space Sciences
• CTE — Charge Transfer Efficiency
• MEM — Meteoroid Exposure Module
• PROM — Programmable Read-Only Memory
• HTH — Hope This Helps. Email abbreviation when replying to requests. Potentially counter-productive if the recipient doesn't understand what it means...
• MMI — Man-Machine Interface
• DYERE — Dyer Observatory Reprints
• TNM — The New Millenium
• CDT — Connaissance Des Temps
• CSA — Canadian Standards Association (like UL)
• SAO — Smithsonian Astrophysical Observatory
• KM — Kilometer (1,000 meters)
• SPVW — Spaceview
• ESO — European Southern Observatory
• HCIS — Health Care Information System
• DAO — Dominion Astrophysical Observatory (Victoria, BC, Canada)
• IRSA — Infrared Science Archive
• ASPP — Atmospheric and Space Plasma Physics
• DEACO — Dearborn Observatory Contributions
• DC — Delta Clipper
• AT — Acceptance Test
• GOES — Geostationary Operational Environmental Satellite
• LHEA — Laboratory for High Energy Astrophysics
• MOA — Microlensing Observations in Astrophysics
• NEODYS — Near Earth Objects Dynamic Site
• SERC — Science and Engineering Research Council
• SSID1 — Soviet Space Insertion Diverter One
• AREG — Astronomical Register
• JAC — Joint Astronomy Centre

• CEMEC — Celestial Mechanics
• USRA — Universities Space Research Association
• ANEDI — Annals of the Royal Observatory, Edinburgh
• NASAL — NASA Circular Letter
• SIDC — Sunspot Index Data Center
• OSCAR — Orbiting Satellite Carrying Amateur Radio
• ADCBU — Astronomical Data Center Bulletin
• EVA — Extra-Vehicular Activity
• NSP — NASA Support Plan
• COSTAR — Corrective Optics Space Telescope Axial Replacement
• IOTA — International Occultation Timing Association
• APJ — Astrophysical Journal
• ACICH — Astronomical Circular
• LOX — Liquid Oxygen
• LGA — Low Gain Antenna
• GSC — Guide Star Catalog
• ALPO — Association of Lunar and Planetary Observers
• DSS — Deep Space Station
• BSI — British Standards Institution
• NASAR — NASA Reference Publication
• SRD — Software Requirements Document
• VDS — Vereinigung der Sternfreunde
• XRD — X-Ray Diffraction
• LPS — Launch Processing System
• GHTF — Global Harmonization Task Force
• PRAES — Progress in Aerospace Sciences
• MFPE — Mission from Planet Earth
• ORROE — Occasional Reports of the Royal Observatory, Edinburgh
• JEM — Japanese Experiment Module
• UT — Universal Time
• ADSPR — Advances in Space Research
• STSCI — Space Telescope Science Institute
• ETLA — Extended Three Letter Acronym
• EPS — Encapsulated Postscript
• COKON — Commmunications of the Konkoly Observatory Hungary
• NCOS — National Commission on Space
• PHASP — Physics and Astrophysics from Spacelab
• ISN — International Supernovae Network
• ACMAN — Astronomical Contributions from the University of Manchester
• CARA — Center for Astrophysical Research in Antarctica
• CQGRA — Classical and Quantum Gravity
• NEOIC — Near Earth Object Information Center
• PHA — Physics And Astronomy
• ID — IDentifier
• SSME — Space Shuttle Main Engine
• CARA — California Association for Research in Astronomy
• SNII — SuperNova of Type II
• ECSS — European Cooperation for Space Standardization
• NASAS — NASA Special Publication
• R/T — Real Time

• CSBN — Committee for Small-Body Nomenclature
• USNO — United States Naval Observatory
• K — Kelvin (absolute temperature scale)
• ANOLL — Annals of the Private Observatory of Lucien Libert
• ESRIN — European Space Research Institute
• ANS — Astro News Service
• OSSA — Office of Space Sciences and Applications
• ZAHB — Zero-Age Horizontal Branch
• ASPRV — Astrophysics and Space Physics Reviews
• TES — Thermal Emission Spectrometer
• ADC — Astronomical Data Center
• MWOAR — Mount Wilson Observatory Annual Report
• LRB — Liquid Rocket Booster
• UL — Underwriters Laboratory
• LEM — Lunar Excursion Module
• ANMN — Antarctic Meteorite Newsletter
• S/W — Software
• DUROO — Durham Observatory Observations
• NASAC — NASA Conference Publication
• BPI — bits per inch
• ALAMO — Automated Lunar and Meteor Observatory
• LSF — Line Spread Function
• ADIS — Astrophysics Data and Information Services
• OBC — Onboard Computer
• AFSCN — Air Force Space Command network
• ESOSR — European Southern Observatory Scientific Report
• CQGRS — Classical and Quantum Gravity Supplement
• EUV — Extreme Ultraviolet Vertical
• CON — Certificate Of Need
• EBCI — Eclipsing Binaries Circulars
• EU — Expanded Universe
• NSI — NASA Science Internet
• POEM — Polar-Orbiting Earth Mission
• PROE — Publications of the Royal Observatory of Edinburgh
• JHIT — Joint Healthcare Information Technology Alliance
• CDC — Centers for Disease Control
• AUASS — Arab Union for Astronomy and Space Sciences
• VAI — Voluntary Action Indicated (Food & Drug Administration postaudit inspection classification)
• OPF — Orbiter Processing Facility
• RFNA — Red Fuming Nitric Acid
• APH — Astroparticle Physics
• RECONS — Research Consortium on Nearby Stars
• MHW — Ministry of Health and Welfare
• ASTL — Astronomy Letters
• SSTO — Single-Stage-to-Orbit
• EAA — Encyclopedia of Astronomy and Astrophysics
• TIFF — Tag Image File Format
• ADEC — Astrophysics Data Centers Executive Council
• PM — Pressurized Module
• AIRCO — Air et Cosmos

• MSX — Midcourse Space Experiment
• TAC — Time Allocation Committee
• AZ — Azimuth
• ATV — Automated Transfer Vehicle
• CMA — Chemical Manufacturers Association
• NIZRE — Nizamiah Observatory Reprints
• STICA — Space Technology Industrial and Commercial Applications
• ASTD — Advanced Space Technology Division
• AREPS — Annual Review of Earth and Planetary Sciences
• EVN — European VLBI Network
• HSP — High Speed Photometer
• JRASC — Journal of the Royal Astronomical Society of Canada
• CDSF — Commercially Developed Space Facility
• AAO — Anglo-Australian Observatory
• LASCO — Large Angle Spectrometric Coronograph
• LPO — La Palma Observatory
• MEPAG — Mars Exploration Program Analysis Group
• ASMT — American Society for Medical Technology
• SBNC — Small Bodies Names Committee
• AEXPR — Astronomy Express
• NCI — National Cancer Institute, USA
• RQQ — Radio Quiet Quasar
• BPSK — binary phase shift keying
• MSSS — Maui Space Surveillance Site
• BKOAS — Bulletin of Korean Astronomical Society
• VBO — Vainu Bappu Observatory
• ADEPS — Advances in Earth and Planetary Sciences
• OPAG — Outer Planets Assessment Group
• AMPS — Atmosphere, Magnetosphere & Plasmas in Space
• PASAU — Proceedings of the Astronomical Society of Australia
• PPCAS — Publication of the Pomona College Astronomical Society
• SSBUV — shuttle solar backscatter ultraviolet (radiometer)
• ARC — Astrophysical Research Consortium
• RA — Right Ascension
• AW&ST — Aviation Week & Space Technology
• PAM — Payload Assist Module
• AACCS — Analytical Approach to Candidate Constellation Selection
• AMIA — The American Medical Informatics Association
• IUEDAC — IUE satellite Data Analysis Center
• MDI — Michelson Doppler Imager
• LPI — Lunar and Planetary Institute
• ESOC — European Space Operations Center
• JASS — Journal of Astronomy and Space Sciences
• WEBT — Whole Earth Blazar Telescope
• HIRA — Health Industry Representatives Association
• TEM — Transverse Electromagnetic
• FIRSSE — Far Infrared Sky Survey Experiment
• ROSA — Romanian Space Agency
• NRT — near real time
• ARISTOTELES — Applications and Research Involving Space Technologies Observing the Earth's Field from Low Earth Orbiting Satellite

• CRPL — Cosmic Ray Physics Laboratory
• MSSSO — Mount Stromlo and Siding Spring Observatories
• FS — Far Side
• COLPL — Communications of the Lunar and Planetary Laboratory
• MMA — Minnesota Medical Association
• SPART — Space Research and Technology
• DOY — Day of Year
• VSOLJ — Variable Star Observers League in Japan
• TUV — Technische Uberwachungs-Vereine
• BH — Black Hole
• IDTF — Independent Diagnostic Testing Facility
• CME — Coronal Mass Ejection (usually Sun)
• MCO — Mars Climate Orbiter
• SAAO — South African Astronomical Observatory
• KPNO — Kitt Peak National Observatory (Tucson, AZ)
• ANHAR — Annals of Harvard College Observatory
• GLP — Good Laboratory Practice
• SPMAR — Space Markets
• RASC — Royal Astronomical Society of Canada
• NAMN — North American Meteor Network
• COVVO — Contributions of the Van Vleck Observatory
• LEGRI — Low Energy Gamma-Ray Imager
• HST — Hubble Space Telescope
• SEOS — Synchronous Earth Observation Satellite
• CAPS — Cassini Plasma Spectrometer
• OVS — Observation of Variable Stars
• TTA — Time to Apogee
• PDUFA — Prescription Drug User Fee Act (1992, U.S.)
• ALPOJ — Association of Lunar and Planetary Observers Journal
• WFF — Wallops Flight Facility
• EBS — Electron Bombarded Silicon
• SDI — Strategic Defense Initiative
• NAOJ — National Astronomical Observatory of Japan
• MNRAS — Monthly Notices of the Royal Astronomical Society
• MDD — Medical Device Directive
• SPP — Solar Physics Payload
• K — Kilogram
• FTL — Faster Than Light
• ESOAR — European Southern Observatory Annual Reports
• SPARTAN — Shuttle Pointed Autonomous Research Tool for Astronomy
• SGF — SpaceGuard Foundation
• NRAO — National Radio Astronomy Observatory (Greenbank, WV)
• COROE — Communications from the Royal Observatory Edinburgh
• SZA — Solar Zenith Angle
• Z — Zulu (Greenwich mean time)
• ANDUD — Annals of the Dudley Observatory
• IDL — Interactive Data Language
• BASI — Bulletin of the Astronomical Society of India
• IRAS — Infrared Astronomy Satellite
• SIMCAT — simulate observations using space catalog

• RGO — Royal Greenwich Observatory
• ANLUN — Annals of the Observatory of Lund
• SPRBU — Space Research Bulgaria
• CIBAA — Circular of the British Astronomical Association
• TOMS — Total Ozone Mapping Spectrometer (satellite Instrument)
• COMAP — Comments on Astrophysics
• SA — Solar Array
• CRAF — Comet Rendezvous/Asteroid Fly-by
• POMIC — Publications of Michigan Observatory
• ESOSP — European Southern Observatory Scientific Preprints
• SAPS — Sub Auroral Polarization Streams
• PASA — Publications of the Astronomical Society of Australia
• TIE — Telescopes in Education
• KCAO — Kumamoto Civil Astronomical Observatory
• RALPH — Reduction and Acquisition of Lunar Pulse Heights
• SO/SI — space operations and scientific investigation
• MERIS — Medium Resolution Imaging Spectrometer
• ASP — Astronomical Society of the Pacific
• TEP — Transits of Extrasolar Planets
• EXA — Experimental Astronomy
• MELOO — Melbourne Observatory Observations
• PRCO — Publications of the Riverview College Observatory
• DUDOR — Dudley Observatory Reports
• E&S — Earth and Space
• APHA — American Pharmaceutical Association
• ONRAS — Occasional Notes of the Royal Astronomical Society
• JAHH — Journal of Astronomical History and Heritage
• PA — Popular Astronomy
• BBXRT — Broadband XRay Telescope
• NCC — Network Control Center (GSFC)
• BAAS — Bulletin of the American Astronomical Society
• ISTEC — International Small Telescope Cooperative
• SDAC — Solar Data Analysis Center
• RAZEL — Range, Azimuth and Elevation
• ICE — International Cometary Explorer
• JBAA — Journal of the British Astronomical Association
• GTO — Geostationary Transfer Orbit
• TDRSS — Tracking and Data Relay Satellite System
• IQSY — International Quiet Sun Year
• QSR — Quality System Regulation
• COBOS — Contributions from the Bosscha Observervatory
• SRB — Solid Rocket Boosters
• CV — Cataclysmic Variable
• NAS — Norsk Astronomisk Selskap
• VDU — Video Display Unit
• CM — Command Module
• NESSI — Near Earth Space Surveillance Initiative
• JBAS — Journal of the British Astronomical Society
• ISY — International Space Year (1992)
• MVM — Mariner Venus/Mercury

• CPAF — Cost Plus Award Fee (Type of Contract)
• PLICO — Publications of Lick Observatory
• FWHM — Full Width at Half Maximum
• FSK — Frequency Shift Keying
• PMUNO — Publications of the Munich Observatory
• MSFN — Manned Space Flight Network
• JDSO — Journal of Double Star Observations
• STOMS — Space Telescope Observatory Management System
• UT — University of Texas
• WISE — Wide-Field Infrared Survey Explorer
• ANLOW — Annals of the Lowell Observatory
• VAB — Vertical Assembly Building
• COSRE — Cosmic Research
• JCAP — Journal of Cosmology and Astro-Particle Physics
• ARCHS — Archaeoastronomy Supplement
• PASJ — Publications of the Astronomical Society of Japan
• NCAR — National Center for Atmospheric Research (US)
• IPC — Interprocess Communication
• ADVAMED — Advanced Medical Technology Association
• NASO — North American Space Operations
• ONR — Office of Naval Research (U.S.)
• BIO — Biotechnology Industry Organization
• FCPH — Fundamentals of Cosmic Physics
• SETI — Search for Extraterrestrial Intelligence
• CIT — California Institute of Technology (Pasadena, CA)
• PVO — Pioneer Venus Orbiter
• SR — Special Relativity
• PDREO — Publications of the Dresden Observatory
• APOD — Astronomy Picture of the Day
• ANCAP — Annals of the Cape Observatory
• LBLRR — LBL Research Review
• RCS — Reaction Control System/Subsystem
• ANDEA — Annales of the Dearborn Observatory
• SDIO — Strategic Defense Initiative Organization
• OTV — Orbital Transfer Vehicle
• PAAS — Publications of the American Astronomical Society
• CBER — Center for Biologics Evaluation and Research
• MMH — Monomethyl Hydrazine
• M&R — Maintenance and Refurbishment
• Z — Zenith
• COBRN — Contributions of the Public Observatory and Planetarium in Brno
• PGLO — Publications of the Goethe Link Observatory
• DSSN — Delta Scuti Star Newsletter
• COLIC — Contributions of Lick Observatory
• COARM — Contributions from the Armagh Observatory
• AUJPA — Australian Journal of Physics Astrophysical Supplement
• CHA&A — Chinese Astronomy and Astrophysics
• MEDGV — Germany's Medical Equipment Safety Law
• VVORE — Van Vleck Observatory Reprints
• ECRI — Emergency Care Research Institute

• LR — Long Radius
• TCPA — Time for Closest Point of Approach
• FAHS — Federation of American Health Systems
• CPFF — Cost Plus Fixed-Fee
• AOA — Abort Once Around (shuttle Abort Plan)
• PNAOJ — Publications of the National Astronomical Observatory of Japan
• NIR — Near Infrared
• DSMA — Division of Small Manufacturers Assistance
• ASSU — Annual Scientific Supplement to Urania
• GLOMR — Global Low-Orbiting Message Relay
• IRAJ — Irish Astronomical Journal
• ESABU — European Space Agency Bulletin
• IUEEN — IUE ESA Newsletter
• TPS — Thermal Protection System
• CHPA — Consumer Healthcare Products Association
• AREP — Astronomy Reports
• CIUO — Circular of the Union Observatory Johannesburg
• AP — Array Processor
• SRON — Space Research Organization of the Netherlands
• LCROSS — Lunar CRater Observation and Sensing Satellite
• OCC — Operations control center
• CMS — Correctional Medical Services
• PI — Principle Investigator
• MECO — Magnetospheric Eternally Collapsing Object
• LLO — Low Lunar Orbit
• IMBH — Intermediate-Mass Black Hole
• JIMO — Journal of the International Meteor Organization
• MOC — Mars Observer Camera
• JAD — Journal of Astronomical Data
• OAP — Odessa Astronomical Publications
• ARA&A — Annual Review of Astronomy and Astrophysics
• COSSE — Cosmic Search Summer
• ADFRF — Ames-Dryden Flight Research Facility
• CODDO — Communications from the David Dunlap Observatory
• MEDEC — Medical Devices Canada
• HRI — High Resolution Imager
• CLMA — Clinical Laboratory Management Association
• SLC — Space Launch Complex
• SPOT — Satellite Pour l'Observation de la Terre (France)
• ELT — Extremely Large Telescope
• IRAJS — Irish Astronomical Journal Supplement
• CNB — Cosmic Neutrino Background
• PLAST — Planetary Astronomy
• OV — Orbital Vehicle
• HIAA — Health Insurance Association of America
• JHAS — Journal for the History of Astronomy Supplement
• COSKA — Contributions of the Astronomical Observatory Skalnate Pleso
• NASPY — North American Society of Electro Physiology and Pacing
• NRAOR — National Radio Astronomy Observatory Reprints
• NMI — Nautical Mile

• UPPAN — Uppsala Astronomical Observatory Annals
• ESPI — European Space Policy Institute
• PMANO — Publications of the Manila Observatory
• PN — Planetary Nebula
• COASP — Comments on Astrophysics and Space Physics
• APM — Attached Pressurized Module (a.k.a. Columbus)
• JBRE — Jodrell Bank Reprints
• JD — Julian Date
• LBT — Large Binocular Telescope
• EEXSC — Earth and Extraterrestrial Sciences
• ITU — Infrared Telescope Unit
• ISEE — International Sun-Earth Explorer
• AO — announcement of opportunity
• ECS — Environmental Control System (Subsystem)
• JASAC — Japan Astronomical Study Association Circulars
• BCRAO — Bulletin Crimean Astrophysical Observatory
• PVVO — Publications of the Van Vleck Observatory
• AACC — American Association for Clinical Chemists
• ASAIO — American Society for Artificial Internal Organs
• PBEIO — Publications of the Beijing Astronomical Observatory
• EOS — Earth Observing System (U.S.)
• MDMA — Medical Device Manufacturers Association
• PDDO — Publications of the David Dunlap Observatory
• JKAS — Journal of Korean Astronomical Society
• ICH — International Conference of Harmonization
• LSR — Local Standard of Rest
• MDS — Medium Deep Survey
• CRARE — Cracow Observatory Reprints
• MPL — Mars Polar Lander
• PDR — Photo Dissociation Region
• CAMRE — Cambridge Observatories Reprints
• RSNA — The Radiological Society of North America, Inc.
• ACRV — Assured Crew Return Vehicle
• FDLI — Food and Drug Law Institute
• RSO — Resident Space Object
• CCR — Cost-Charge Ratio
• NEWAR — New Astronomy Review
• IUENN — IUE NASA Newsletter
• MELAR — Melbourne Observatory Annual Report
• HRSA — U.S. Health Resources and Services Administration
• MOPH — Ministry of Public Health
• MHD — Magnetohydrodynamic
• WHT — William Herschel Telescope
• JAAME — Japanese Association for the Advancement of Medical Equipment
• APJL — Astrophysical Journal Letters
• LICOB — Lick Observatory Bulletin
• ATLAS — ACTIVITIES Atmospheric Laboratory for Applications and Science
• LAMO — low altitude mapping orbit
• IAPM — International Association of Medical Prosthesis Manufacturers
• ETC — Estimated Time to Completion

• DRG — Diagnosis-Related Groups
• RA — Regulatory Affairs
• JBAN — Jodrell Bank Annals
• RAA — Relative Azimuth Angle
• JASV — Journal of the Astronomical Society of Victoria Melbourne
• ESIS — ESA Space Information Systems
• PERCO — Perkins Observatory Contributions
• CIRCE — Confusion-limited Infrared Cosmology Explorer
• UVS — Ultraviolet Spectrometer
• CFC — Chloroflourocarbon
• PCINO — Publications of the Cincinnati Observatory
• IU — Interface Unit
• COPER — Contributions of Perkins Observatory
• S/N — Signal-to-Noise ratio
• TOKRE — Tokyo Astronomical Observatory Reprints
• MASSMEDIC — Massachusetts Medical Device Industry Council
• SUNY — State Universityrsity of New York
• LRSP — Living Reviews in Solar Physics
• CEC — Commission of the European Communities ;
• ASCRS — American Society of Cataract and Refractive Surgery's
• HIDA — Health Industry Distributors Association
• AFGWC — Air Force Global Weather Central (U.S.)
• TIROS — Television InfraRed Observation Satellite (POES)
• CD-ROM — compact disc-read only memory
• HIS — Health Information Systems
• RGOO — Royal Greenwich Observatory Observations
• APC — Ambulatory Payment Class
• MMT — Multiple Mirror Telescope
• WIMP — Weakly Interacting Massive Particle
• JHA — Journal for the History of Astronomy
• OASH — Office of the Assistant Secretary for Health
• FIR — Far Infrared
• CFIT — Controlled Flight into Terrain
• ECCLS — European Committee on Clinical Laboratory Standards
• GPC — General Purpose Computer
• ARKOD — Annual Report of the Kodaikanal Observatory
• NAHIT — National Alliance for Health Information Technology
• WRORE — Wroclaw Astronomical Observatory Reprints
• RA — Research Assistant
• CEA — Center for EUV Astrophysics
• INDA — Investigational New Drug Application
• PSLV — Polar Satellite Launch Vehicle (Indian Space Research Organization; India)
• PEPI — Physics of the Earth and Planetary Interiors
• UARS — Upper Atmosphere Research Satellite (NASA)
• LF — Luminosity Function
• NIGMS — National Institute Of General Medical Sciences (NIH)
• OEJV — Open European Journal on Variable Stars
• JAPA — Journal of Astrophysics and Astronomy
• STO — Solar Terrestrial Observatory
• QBO — Quasi-biennial Oscillation (atm.)

• USPHS — United States Public Health Service
• D — Directive
• PCA — Proportional Counter Array
• SIM — Space Interferometry Mission
• DSP — Defense Support Program
• HFMA — Healthcare Financial Management Association
• NCSC — National Council of Senior Citizens
• PSPRO — Publications of the Sproul Observatory
• MCD — Minimum Cost Design
• RNAOJ — Report of the National Astronomical Observatory of Japan
• MEI — Medical Economic Index
• DCT — Discrete Cosine Transformer
• PDR — Physician’s Desk Reference
• MJD — Modified Julian Date
• UCLA — Harbor-University of California Los Angeles
• PSK — Phase Shift Key
• PPN — Proto-Planetary Nebula
• POMIN — Publications of the Astronomical Observatory University of Minnesota
• DEED — Minnesota Department of Employment and Economic Development
• STERE — Steward Observatory Reprints
• IPEM — Institute of Physics and Engineering in Medicine
• PROPAC — Prospective Payment Assessment Commission
• SERAJ — Serbian Astronomical Journal
• PCARS — Publication of COMU Astrophysics Research Center
• LAC — Lockheed Aircraft Corporation
• SPED — Space Education
• PV — photovoltaic (solar)
• EPIC — Earth Polychromatic Imaging Camera
• ICD-9-CM — International Classification of Diseases, 9th Edition
• S/C — Spacecraft
• FDR — Final Design Review
• A&AS — Astronomy and Astrophysics Supplement Series
• OHTA — Office of Health Technology Assessment
• CIRRIS — Cryogenic Infrared Radiance Instrument for Shuttle
• CCAS — Cape Canaveral Air Station
• CDS — Coronal Diagnostic Spectrometer
• MAFI — Medical Alert Foundation International
• PMT — Photo Multiplier Tube
• EFPIA — European Federation of Pharmaceutical Industries and Associations
• TTP — Time to Perigee
• VHT — Very High Temperature
• SFR — Star Formation Rate
• EGRET — Energetic Gamma Ray Explorer Telescope
• SDSS — Sloan Digital Sky Survey
• COROT — Convection Rotation and Planetary Transits
• RAD — Radiant
• OPM — Outer Planet Mission
• ATDRS — Advanced Tracking and Data Relay Satellite
• QSO — Quasar|Quasi-Stellar Object
• MVI — Microgravity Vestibular Investigation

• ATM — Apollo Telescope Mount (on Skylab)
• SOT — Solar Optical Telescope
• DOAMS — distant-object attitude-measuring system
• AMANDA — Antarctic Muon And Neutrino Detector Array
• HSQB — Health Standard and Quality Bureau
• SMDA — Safe Medical Devices Act (1990)
• MTI — Minnesota Technology Inc
• ESTP — European Space Technology Platform
• RAE — Radio Astronomy Explorer
• CFF — Columbus Free Flyer
• NRO — U.S. National Reconnaissance Office
• CNSA — China National Space Administration
• JCAHO — Joint Committee on the Accreditation of Healthcare Organizations
• SEB — Systems Engineering Branch
• GML — Galactic Modeling Language
• CENELEC — European Committee for Electromechanical Standardisation
• CST — Constant-Separation Traversing
• GOES — Geostationary Orbiting Environmental Satellite
• HIMSS — Healthcare Information and Management Systems Society
• MOTIF — Maui Optical Tracking and Identification Facility
• ANSAO — Annals of the Astrophysical Observatory of the Smithsonian Institution
• JETRO — Japan External Trade Organization
• WR — Western Range
• LRO — Lunar Reconnaissance Orbiter
• SPAC — State Pharmaceutical Administration of China
• LM&SS — Lunar Mapping and Scientific Survey
• GPE — Gravitational Potential Energy
• JCCT — Joint Commission on Commerce and Trade (US-China)
• CGRO — Compton Gamma-Ray Observatory
• SYDOP — Sydney Observatory Papers
• HUT — Hopkins Ultraviolet Telescope
• LAN — Local Apparent Noon
• LHA — Local Hour Angle
• MOS — Metal Oxide Semiconductor (FET Devices)
• JET-X — Joint European Telescope for X-ray astronomy
• AAT — Anglo Australian Telescope
• LAWOB — Laws Observatory Bulletin
• HIBCC — Health Industry Business Communications Council
• LOD — Length of Day
• USNOC — United States Naval Observatory Circulars
• G — Gravity
• NAG — Numerical Algorithms Group Inc.
• PDA — Parenteral Drug Association
• OSTA — Office of Space and Terrestrial Applications (US NASA; now OAST)
• CBI — Confederation of British Industries
• ND — Neutral Density
• TPF — Terrestrial Planet Finder
• IES — Institute of Environmental Sciences
• POSS — Palomar Observatory Sky Survey
• SPIRE — Spectral Infrared Rocket Experiment

• SF — Square Foot
• SPRRE — Sproul Observatory Reprints
• LLC — Limited Liability Partnership
• UPPOR — Uppsala Astronomical Observatory Reports
• MIL-STD — Military Standard
• MIAA — Medical Industry Association of Australia
• AMDM — Association of Medical Diagnostics Manufacturers
• ETR — Eastern Test Range (ESME Preferred)
• ISTAHC — International Society of Technology Assessment in Health Care
• IMDA — Independent Medical Distributors Association
• EUDRA — European Drug Regulatory Authorities Network
• MS — Master Schedule
• CHI — California Healthcare Institute
• QSIT — Quality System Inspection Technique
• UGC — Uppsala General Catalog
• CSG — Council of State Governments
• WD — White Dwarf
• ASCP — American Society for Clinical Pharmacology and Therapeutics
• EUV — Extreme Ultra-Violet 2
• ASH — American Society of Hematology's
• SSDF — Space Science Development Facility
• PPRC — Physician Payment Review Commission
• BATSE — Burst and Transient Source Experiment
• SOLSTICE — Solar Stellar Irradiance Comparison Experiment
• VO — Virtual Observatory
• MMKMO — Memoirs Of The Kakioka Magnetic Observatory
• DEM — Differential Emission Measure
• ORA — FDA's Office of Regulatory Affairs
• SNR — Super Nova Remnant
• AIPS — Astronomical Image Processing System
• MDR — Medical Device Register
• NEEDS — NASA end-to-end data system
• GRO — Gamma Ray Observatory (NASA)
• PVASO — Publications of the Vassar College Observatory
• TIMED — Thermosphere Ionosphere Mesosphere Energetics and Dynamics
• MDA — Medical Device Amendments
• IGM — Intergalactic Medium
• GEO — Geosynchronous Earth Orbit
• FIPS — Fast Imaging Plasma Spectrometer
• NAMES — National Association of Medical Equipment Services
• VTVL — Vertical Takeoff Vertical Landing
• CL — Command Language
• MEV — Mars Excursion Vehicle
• LAT — Large Area Telescope
• LASS — large-amplitude space simulator
• PAMELA — Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics
• MM — Memory Module
• SPIE — The Society of Photo-optical Instrumentation Engineers
• GRS — Gamma Ray Spectrometer
• RTV — Room Temperature Vulcanizer

• MTPPI — Medical Technology and Practice Patterns Institute
• TOKAB — Tokyo Astronomical Bulletin
• PYUNO — Publications of the Yunnan Observatory
• TDRS — Tracking and Data Relay Satellites
• PWASO — Publications of the Washburn Observatory
• SHA — Sidereal Hour Angle
• PRO — Professional Review Organization
• EFCS — Earth-fixed coordinate system
• MOSS — Market-Oriented Sector Selective
• JFMDA — Japan Federation of Medical Device Associations
• PAB — Pharmaceutical Affairs Bureau (Japan)
• MRSR — Mars Rover Sample Return
• ROAN — Royal Observatory Annals
• WFC — Wide-Field Camera
• TNO — Trans-Neptunian Object
• NLN — National League for Nursing
• PCS — Pointing Control System
• ODC — Other Direct Cost
• MTF — Modulation transfer function.
• HPB — Health Protection Board (Canada)
• SUSIM — Solar Ultraviolet Spectral Irradiance Monitor
• BEV — Billion Electron Volts
• EGG — Evaporating Gaseous Globule
• MDDI — Medical Device and Diagnostics Industry
• CM — Center of Mass
• ERF — Energy Rejection Filter
• STSKY — Star Sky
• S&T — Sky & Telescope
• JBIS — Journal of the British Interplanetary Society
• OARE — Orbital Acceleration Research Experiment
• INTEGRAL — International Gamma-Ray Astrophysics Laboratory
• VLA — Very Large Array
• SOPH — Solar Physics
• AAOPR — Anglo-Australian Observatory Epping Preprint
• MITTS — Mobile Igor Tracking Telescope System
• ANTOK — Annals of the Tokyo Astronomical Observatory
• JAXA — Japan Aerospace Exploration System
• LIGO — Laser Interferometer Gravitational-Wave Observatory
• LH — Liquid Hydrogen
• PYERO — Publications of the Yerkes Observatory
• TMT — Thirty-Meter Telescope
• LAPSS — Large-Area Pulse Solar Simulator
• FDAMA — FDA Modernization Act of 1997
• ODF — Orbit Determination Facility
• RVGSP — Reviews of Geophysics and Space Physics
• TV — Thermal Vacuum
• DIN — Deutsches Institut fur Normung
• JGR — Journal of Geophysical Research
• GHRS — Goddard High Resolution Spectrograph
• MTC — Man-Tended Capability

• ISSRT — Israel Space Research and Technology Information Bulletin
• PT — Pass-Through
• WILOO — Williamstown Observatory Observations
• LAMMR — large-antenna multichannel microwave radiometer
• IOA — Institute Of Astronomy (Cambridge)
• VAB — Vehicle Assembly Building
• SNAP — Supernova / Acceleration Probe
• RTK — Right-To-Know
• AGPS — Assisted Global Positioning System
• M&P — Moon and Planets
• SPIRIT — Spatial Infrared Telescope
• GRC — Glenn Research Center
• STACC — Standard Telemetry And Communications Component
• HIB — Health Insurance Bureau (Japan)
• CYSF — Cape York Space Facility
• ER — Eastern Range
• AVSOM — American Association of Variable Stars Observers Monographs
• DSSC — Deep Space Station Complex
• NHIB — National Health Insurance Bureau (Taiwan)
• IDT — Investigation Definition Team
• RAPS — Regulatory Affairs Professional Society
• NMDC — National Medical Device Coalition
• DNA — Digital Network Architecture
• MPBU — Minor Planet Bulletin
• PSC — Point Source Catalog
• IFA — Institute for Astronomy
• DADS — Data Archive and Distribution System
• ISBRV — International Space Business Review
• PACS — Physics and Astronomy Classification Schemex
• OG — Original Gravity
• SOHO — SOlar and Heliospheric Observatory
• COPRE — Copenhagen University Observatory Reprints
• WAXS — Wide Angle X-ray Scattering
• SST — Spectroscopic Survey Telescope
• MACHO — Massive Compact Halo Object
• HAACP — Hazard Analysis Critical Control Points Program
• PHA — Potentially Hazardous Asteroid
• HDIF — Health Care Data Interchange Format
• IGY — International Geophysical Year (1 July 1957 - 31 December 1958)
• LLAGN — Low-Luminosity Active Galactic Nucleus
• IOLM — International Organization of Legal Metrology
• DH — Data Handling
• CIAO — Chandra Interactive Analysis of Observations
• EDMA — European Diagnostics Manufacturer's Association
• ASIM — American Society of International Medicine
• CCR — Configuration Change Request
• SSRMS — Space Station Remote Manipulator System
• TECRV — Technology Review
• NERVA — Nuclear Engine for Rocket Vehicle Application
• MPEC — Minor Planet Electronic Circular

• BHB — Blue Horizontal Branch
• CATS — Cheap Access to Space
• STMAP — Studies in Mathematical Physics
• GLOB — Globular
• LS/ST — Light Shield/Star Tracker
• SSS — Spinning Sun Sensor
• ATEL — Astronomer's Telegram
• SO — Space Operations
• LAIRT — Large-Aperture Infrared Telescope
• SEF — Space Environmental Facility
• APINV — Astrophysical Investigations
• UW — University of Wisconsin
• PLANEMO — Planetary Mass Object
• NUSTAR — Nuclear Spectroscopic Telescope Array
• MEDMARC — Medical Device Material Assurance and Reinsurance Company, Ltd.
• MEDSUN — Medical Device Surveillance Network
• OMS — orbital maneuvering system
• XUV — Extreme Ultraviolet
• PPQA — Pre-Product Quality Assurance
• MVEMJSUNP — Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto
• BBT — Big Bang Theory
• WMAP — Wilkinson Microwave Anisotropy Probe
• B/W — Black and White
• FK4 — Fundamental Katalog 4
• RGOB — Royal Greenwich Observatory Bulletin
• NSTL — National Space Technology Laboratories (NASA)
• CBR — Cosmic Background Radiation
• SPICE — Survey Probe Infrared Celestial Experiment
• QE — Quantum Efficiency
• SAA — South Atlantic Anomaly
• QTG — Quantum Theory of Gravity
• SM — Standard Model
• EBTC — Edison BioTechnology Center
• PBOSO — Publications of the Bosscha Observatory Lembang
• SSPF — Space Station Processing Facility
• OAO — Orbital Astronomical Observatory
• FOC — Faint Object Camera
• SANS — Stellar Autonomous Navigation System
• MOTIE — Ministry of Trade, Industry, and Energy (Korea)
• AIMBE — American Insitute for Medical and Biological Engineering
• EMDM — European Medical Device Manufacturer
• UHMW — Ultra High Molecular Weight
• PERI — Pharmaceutical Education & Research Institute
• TOCC — TDRS Operations Control Center
• PISCO — Parallel Imager for Southern Cosmological Observations
• ADSAC — Advanced Series in Astrophysics and Cosmology
• BCS — Bragg Crystal Spectrometer
• SPPOL — Space Policy
• AR — Active Region
• ISM — Interstellar Medium

• HGA — High Gain Antennae
• DCR — Document Change Request
• COWAT — Contributions of the University of Waterloo Observatory
• IPA — Institute for Polyacryclate Sciences
• SSI — Solid-State Imager
• CU — Calibration Unit
• VLT — Very Large Telescope
• AGN — Active Galaxy Nucleus
• COCIR — Coordination Committee of the Radiological and Electromedical Industries
• NOCC — Network Operations Control Center (GSFC)
• E — Earth
• KBO — Kuiper Belt Object
• MDC — Major Diagnostics Category
• PMC — Permanently Manned Capability (of Space Station)
• SSGSR — Springer Verlag Springer Series on Group Geophysics Space Research
• HCPCS — Health Care Common Procedure Coding System
• USNOR — United States Naval Observatory Reports
• BAVSO — Bulletin of the American Association of Variable Stars Observers
• PMA — Premarket Application
• SPAN — Space Physics Analysis Network
• SIP — Sickness Index Profile
• FRC — Flight Research Center
• MST — Mean Solar Time
• IFCC — International Federation of Clinical Chemists
• SPD — Solar Physics Division
• NAHC — National Association of Home Care
• NEAR — Near-Earth Asteroid Rendezvous
• SM — Secondary Mirror
• MNBIO — Minnesota Biotechnology
• TGF — Terrestrial Gamma-Ray Flash
• SPWD — Space World
• LVPS — Low Voltage Power Supply
• OFAD — Optical Field Angle Distortion
• HEDIS — Healthplan Employee Data and Information
• POL — Physician's Office Laboratory
• SDO — Scattered Disk Object
• HTML — Hyptertext Markup Language
• UNOOSA — United Nations Office for Outer Space Affairs
• VLBI — Very Long Baseline Interferometry
• PC — Planetary Camera
• TR — Tape Recorder
• MMASI — Memoirs of the Astronomical Society of India
• SRAG — Space Radiation Analysis Group
• SIRTF — Space Infrared Telescope Facility
• MODIS — Moderate Resolution Imaging Spectroradiometer
• IPNS — Intense Pulsed Neutron Source
• USAFA — United States Air Force Academy
• AAONW — Anglo-Australian Observatory Epping Newsletter
• 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)
• UADE — Unanticipated Adverse Device Effects

• JRASN — Journal of the Royal Astronomical Society of New Zealand
• NACA — National Advisory Committee on Aeronautics
• MMO — Mercury Magnetospheric Orbiter
• LPV — Long Period Variable
• MPI — Minnesota Project Innovation
• EUCOMED — European Confederation of Medical Suppliers Associations
• PLR — Planetary Report
• ODE — Office of Device Evaluation
• MPC — Minor Planet Circulars
• STATS — star tracker alignment test set
• ASC — Agence Spatiale Canadienne
• KODOB — Kodaikanal Observatory Bulletins
• SCP — Supernova Cosmology Project
• MA — Medical Alley
• DSS — Digitized Sky Survey
• ST-ECF — Space Telescope - European Coordinating Facility
• MACRO — Monopole, Astrophysics and Cosmic Ray Observatory
• DMF — Data Management Facility
• LCG — light curve generator
• CCLRC — Central Laboratory of the Research Councils
• PBPK — Physiologically-Based Pharmacokinetic
• BD — Bonner Durchmusterung
• JHU — The Johns Hopkins University (Baltimore, MD)
• DWE — Doppler Wind Experiment
• FPA — Floating Point Accelerator
• B/L — Baseline
• TEC — Thermal Electric Cooler
• JCMT — James Clerk Maxwell Telescope
• STHCG — Studies in High Energy Physics Cosmology and Gravitation
• OWL — Overwhelmingly Large Telescope
• DDORE — David Dunlap Observatory Richmond Hill Reprints
• AU — Alternate Universe
• ESAST — European Space Agency Scientific Technical Review
• AVSOQ — American Association of Variable Stars Observers Quarterly Reports
• ET — External Tank
• ESS — Engineering Support System
• PKAS — Publication of the Korean Astronomical Society
• RGB — Red Giant Branch
• VEEGA — Venus-Earth-Earth Gravity Assist
• ASSA — Astronomical Society of South Africa
• M — Messier
• PAB — Publications of The Astrophysics Branch Ottawa
• MSP — Millisecond Pulsar
• MMIC — Medical Manufacturers' Information Council
• PEB — Performance Evaluation Board
• SKA — Square Kilometre Array
• XMM — X-ray Multi Mirror
• AVSOA — American Association of Variable Stars Observers Abstracts
• SEM — space environment monitoring
• TAI — International Atomic Time

• CEV — Crew Exploration Vehicle
• SGR — Soft Gamma Repeater
• WSMR — White Sands Missile Range (whiz-murr)
• DG — Data Group
• AASPP — Astrononomy and Astrophysics Series
• MBBNET — Minnesota Biomedical Business Network
• HOTOL — Horizontal Takeoff and Landing Launcher
• TEA — Torque Equilibrium Attitude
• SNR — SuperNova Remnant
• PST — Personal Solar Telescope
• THAST — Theoretical Astrophysics
• PBRN — Publications of the Astronomical Institute of the University of Borneo
• LDEF — Long Duration Exposure Facility (for Spacecraft Material Testing)
• MVCA — Minnesota Venture Capital Association
• ICCD — Intensified Charge-Coupled Device
• ROE — Royal Observatory, Edinburgh
• SIRTF — Shuttle InfraRed Telescope Facility
• UDL — Unique Data Log
• SIMBAD — Set of Identifications, Measurements, and Bibliography for Astronomical Data
• VDC — Volts, Direct Current
• LRO — Large Radio Observatory
• CEAB — Central European Astrophysical Bulletin
• POVRO — Publications of the Owens Valley Observatory
• RSU — Rate Sensor Unit
• SG — Shattered Galaxy (game)
• DOC — Data Operations Center
• D/A — Digital-to-Analog
• TMA — Tycho Magnetic Anomaly
• ISO — Imaging Spectrometic Observatory
• NR — Non-Relativistic
• PAN-STARRS — Panoramic Survey Telescope and Rapid Response System
• BHTA — British Healthcare Trades Industry
• STEREO — Solar Terrestrial Relations Observatory
• CWS — Committee on World Standards
• MDR — Medical Device Reports
• ADASS — Astronomical Data Analysis Software and Systems
• LDEO — Lamont-Doherty Earth Observatory
• PSF — Point Spread Function
• FQR — Flight Qualification Review
• SST — Space Surveillance and Tracking
• GG — Gravity Gradient
• MMRAS — Memoirs of the Royal Astronomical Society
• OHP — Observatoire de Haute-Provence
• ZPF — Zero-Point-Fluctuation
• CTB — Cargo Transfer Bag
• DPS — Division for Planetary Sciences
• PVSS — Publications of Variable Star Section
• RAPS — radiologists, anesthesiologists, and pathologists
• ASTRA — Astrophysics and Space Sciences Transactions
• ANSHO — Shanghai Observatory Annals

• TOY — Time of Year
• PDAO — Publications of the Dominion Astrophysical Observatory
• NEA — Noise Equivalent Angle
• XRT — X-Ray Telescope
• MMBAA — Memoirs of the British Astronomical Association
• MPS — Mission Planning System
• NRF — National Research Foundation
• PFAO — Publications of the Flower Astronomical Observatory
• IDA — International Dark-Sky Association, Inc.
• DSNPR — Deep Space Network Progress Report
• MMAAR — Maria Mitchell Association Annual Report
• BMDO — Ballistic Missile Defense Office
• EGRET — Energetic Gamma Ray Experiment Telescope
• SAC — Solar Array Carrier
• WR — Wolf-Rayet Star
• SI — Science Instrument
• ATC — Absolute Time Command
• CAPMI — Royal Observatory Cape Mimeogram
• LNSP — Lecture Notes and Supplements in Physics
• GAS — Getaway Special
• PLSS — Portable Life Support System
• NM — Non-Moment
• ADU — Astronomical Distance Unit
• SAC — Saguaro Astronomy Club
• RC — Relativistic Correction
• PCOOO — Publications of the Cook Observatory
• SVPCS — Springer Verlag Springer Series on Physics Chemistry Space
• APPLE — Ariane Passenger Payload Experiment
• PDO — Publications of the Dominion Observatory Ottawa
• HRMS — High Resolution Microwave Survey (SETI, Project Phoenix)
• ZD — Zenith Distance
• VCS — Vernier Control System
• OGSE — Optical Ground Support Equipment
• AGILE — Astro-rivelatore Gamma a Immagini Leggero
• ACE — Actuator Control Electronics
• MTSRE — Mount Stromlo Observatory Reprints
• CRISTA — Cryogenic Infrared Spectrometer Telescope For Atmosphere
• RV — Radial Velocity
• GST — Ground System Test
• POHEL — Publications of the Astronomical Observatory Helsinki
• ESOB — European Southern Observatory Bulletin
• HEO — Highly Elliptical Orbit
• MV — Apparent Visual Magnitude
• ROUS — Rodents Of Unusual Size
• ODB — Operations Data Base
• CAROB — Carter Observatory Wellington New Zealand Astronomical Bulletins
• ANLL — Annals of the Observatory of Lucien Libert
• LITVC — Liquid Injection Thrust Vector Control
• MACHO — Massive Astronomical Compact Halo Object
• LGRB(S) — long gamma ray burst(s)

• AEDRV — Astronomy Education Review
• ISTS — Institute for Space and Terrestrial Science
• PLAWO — Publications of Laws Observatory
• CORAD — Communications from the Radcliffe Observatory Pretoria South Africa
• VMS — Vertical Motion Simulator
• BANS — Bulletin of the Astronomical Institutes of the Netherlands, Supplement Series
• TCE — Thermal Control Electronics
• NEO — Near Earth Object
• AP&SS — Astrophysics and Space Science
• HZ — Habitable Zone
• CD — Cordoba Durchmusterung
• TMC — Taurus Molecular Cloud
• SPO — Sacramento Peak Observatory
• RMS — Record Management System
• AAAD — Amateur Astronomers Association Delhi
• BIS — British Interplanetary Society
• ARBEI — Astrophysics Reports Publications of the Beijing Astronomical Observatory
• JWST — James Webb Space Telescope
• VAC — Volts, Alternating Current
• LGM — Little Green Men
• PPMTO — Publications of the Purple Mountain Observatory
• OOTU — Origin Of The Universe
• MAGIC — Major Atmospheric Gamma-ray Imaging Cherenkov Telescope
• CCA — Cambridge Contemporary Astrophysics
• APL&C — Astrophysical Letters Communications
• WCFZ — Worst Case Fresnel Zone
• T&E — Test and Evaluation
• PAIB — Publications of the Astronomy Institute of Bonn
• VLBA — Very Long Baseline Array
• PA — Position Angle
• IMO — International Meteor Organization
• ESTEC — European Space Technology Center
• IPNPR — Interplanetary Network Progress Report
• ALMA — Atacama Large Millimeter Array
• SSP — Subsolar Point
• LST — Large Space Telescope
• SMM — Solar Maximum Mission
• POCC — Payload Operations Control Center
• LEND — Lunar Exploration Neutron Detector
• MOLA — Mars Observer Laser Altimeter
• PASPS — Publications of the Astronomical Society of the Pacific Supplement
• IRFNA — Inhibited Red Fuming Nitric Acid
• PRAST — Practical Astronomy
• MER — Mars Exploration Rover
• HVR — Hyper-Variable Region
• EPD — Energetic Particles Detector
• PMCCO — Publications of the Leander McCormick Observatory
• WSO — Wilcox Solar Observatory
• FRAS — fellow of the Royal Astronomical Society
• VAFB — Vandenberg Air Force Base

• KP — Kitt Peak
• MLI — Multilayer Insulation
• MOWG — Mission Operations Working Group
• MPO — Mercury Planetary Orbiter
• AVSOR — American Association of Variable Stars Observers Reports
• PAICZ — Publications of the Astronomical Institute of the Czechoslovak Academy of Sciences
• APSSS — Astrophysics and Space Science Supplement
• MIP — Moon Impact Probe
• MTWRE — Mount Wilson and Palomar Observatory Reprints
• LAMP — Lyman-Alpha Mapping Project
• COLON — Communications of the University of London Observatory
• KODRE — Kodaikanal Observatory Reprints
• IRBS — Infrared Background Sensor
• VPF — Vertical Processing Facility
• VAP — Verification and Acceptance Program
• TEI — The Education Initiative
• MO — Mars Observer
• ANBOS — Annals of the Bosscha Observatory Lembang
• GHA — Greenwich Hour Angle
• PGOOO — Publications of the Goodsell Observatory
• CEO — Corporate Europe Observatory
• UIT — Ultraviolet Imaging Telescope
• OBAFGKM — Oh, Be A Fine Girl, Kiss Me
• APL — Astrophysical Letters
• WAA — Westchester Amateur Astronomers
• AGK3 — Katalog der Astronomischen Gesellschaft 3
• IWG — Interface Working Group
• PAM-D — Payload Assist Module, Delta-class
• SL — Comet Shoemaker-Levy
• COOXF — Communications from the University Observatory Oxford
• HB — Hot Bands
• SAS — Space Adaptation Syndrome
• SIC — Spacecraft Identification Code
• PISTO — Publications of the Istanbul Observatory
• MOND — Modified Newtonian Dynamics
• WTR — Western Test Range
• DLR — Deutschen Zentrum für Luft- und Raumfahrt
• PKIRO — Publications of the Kirkwood Observatory of Indiana University
• DES — Deep Ecliptic Survey
• CAS — Cambridge Astrophysics Series
• WKO — Well-Known Object
• HRS — High Resolution Spectrograph
• TBBT — The Big Bang Theory
• RASS — ROSAT All-Sky Survey
• IRA — Infrared Astronomy
• NEP — North Ecliptic Pole
• LST — Local Sidereal Time
• LERC — Lewis Research Center
• SR — Spectral Recording
• SST — Spitzer Space Telescope

• NED — NASA/IPAC Extragalactic Database
• AC — Astrographic Catalogue
• SMS — Science Mission Specification
• GIO — graphics input/output
• OMC — Orion Molecular Cloud
• SID — Sudden Ionospheric Disturbance
• SMART — Small Missions for Advanced Research in Technology
• RICAP — Roma International Conference on Astroparticle Physics
• MEERE — Kenneth Mees Observatory Reprints
• VHE — Very High Energy
• RAL — Radio Astronomy Laboratory
• UBM — Unpressurized Berthing Mechanism
• ANCGH — Annals of Royal Observatory, Cape of Good Hope
• CSVS — Catalogue of Suspected Variable Stars
• DENIS — Deep Near-Infrared Survey
• BDB — Big Dumb Booster
• OLT — Observatory Level Test
• RTS — Relative Time Sequence
• VTHL — Vertical Takeoff Horizontal Landing
• MNSSA — Monthly Notes of the Astronomical Society of South Africa
• CARRE — Carter Observatory Wellington New Zealand Reprints
• MFR — Manipulator Foot Restraint
• TT — Terrestrial Time
• CDCA — Centre de Depoiullement des Cliches Astronimiques
• MINISAT — Miniature Satellite
• PNLF — Planetary Nebula Luminosity Function (astronomy)
• LFT — Luyten Five-Tenths
• IDT — Instrument Development Team
• MTSOM — Mount Stromlo Observatory Mimeographs
• VOIR — Venus Orbiting Imaging Radar
• EROS — Earth Resources Observation Satellite
• AXP — Anomalous X-Ray Pulsar
• SQPK — staggered quadrature phase shift keying
• BALTA — Baltic Astronomy
• TMP — Technical Management Plan
• AMR — Antarctic Meteorite Research
• IAO — International Astronomy Olympiad
• CVZ — Continuous Viewing Zone (Hubble Space Telescope; US NASA)
• HAO — High Altitude Observatory (NCAR)
• SPDM — Special Purpose Dextrous Manipulator
• STAR — Space Telescope Axial Replacement
• CCDM — Catalog of Components of Double and Multiple Stars
• SOHO — Solar Heliospheric Observatory
• APT — Automatic Photometric Telescope
• COPRI — Contributions from the Princeton University Observatory
• ITF — Intensity Transfer Function
• SAOCO — Smithsonian Astrophysical Observatory - Contributions to Astrophysics
• COAST — Communications in Asteroseismology
• PF&CO — Publications of the Flower and Cook Astronomical Observatory
• CRS — Cambridge Reference Sequence

• SP — Solar Physics
• CIT — Circumstellar Imaging Telescope
• DQE — Detector Quantum Efficiency
• LOWOB — Lowell Observatory Bulletin
• DSO — Deep Sky Object
• ETOL — ESA Test and Operations Language
• EAAA — Escambia Amateur Astronomers Association
• SP — sun point
• ECA — Earth Crossing Asteroid
• UIC — User Identification Code
• OAF — Optical Alignment Facility
• SXR — Soft X-Ray
• FIRST — Frontiers in Research: Space and Time
• MPF — Mars PathFinder
• NSC — Navigational Star Catalog
• PASK — Publications of the Academy of Science Kasakstan
• AVWG — Assembly and Verification Working Group
• A — Angstrom unit
• TMTE — Telemetry Test Equipment
• ATM — Amateur Telescope Maker
• MDRS — Mars Desert Research Station
• OXFOO — Oxford University Observatory Observations
• PCS — Physics and Chemistry in Space
• TOPS — Toward Other Planetary Systems
• OPS — Operations Division
• DDTE — Design, Development, Test, and Evaluation
• STARCAT — Space Telescope Archive Catalog
• EU — Extended Universe
• SPRL — Space Physics Research Laboratory
• CPD — Cape Photographic Durchmusterung
• CSM — Command and Service Module
• MICRE — University of Michigan Observatory Reprints
• PDAA — Publications of the Department of Astronomy, Austin, Texas
• ISR — Instrument Science Report
• CPMF — cost plus management fee
• FACC — Ford Aerospace Communications Corporation
• SLAP — Space Link Access Protocol
• RLQ — Radio Loud Quasar
• KTB — Cretaceous-Tertiary Boundary
• A/D — Analog to Digital (conversion)
• OTHB — Over The Horizon Backscatter
• EBE — Extraterrestrial Biological Entity
• MPC — Minor Planets Circular
• CCD — Color-Color Diagram
• AST — Astrometry Science Team
• AIT — Assembly, Integration, and Testing
• BWI — Baltimore-Washington International Airport, between Baltimore, Maryland and Washington, DC, United States
• CM/QA — Configuration Management/Quality Assurance
• SOUST — Southern Skies
• LUT — Lookup Table

• MSOCC — Multisatellite Operations Control Center
• RTC — Real-Time Command
• FAME — Full-sky Astrometric Mapping Explorer
• IPPPSSOOT — file naming convention for HST data sets
• BCG — Blue Compact Galaxy
• EHB — Extreme Horizontal Branch
• CSM — Circumstellar Material
• AGN — Active Galactic Nucleus
• ASTQ — Astronomy Quarterly
• ABBA — ADC Backend For Bolometer Array
• SMA — Secondary Mirror Assembly
• WCS — World Coordinate System
• NEAF — North East Astronomy Forum
• NG — Newsgroup
• MSTO — Main Sequence Turn-Off
• AEA — Atomic Energy Agency
• MS — Mission Schedule
• SAT — Synthetic Aperture Telescope
• GDS — Great Dark Spot
• ODAS — OCA (Observatoire de la Côte d'Azur) - DLR (Deutschen Zentrum für Luft- und Raumfahrt) Asteroid Survey
• MLY — Mega Light Year
• HLV — Heavy Lift Vehicle
• MTWAR — Mount Wilson and Palomar Observatory Annual Report
• BRITE — Bright-Star Target Explorer
• FDI — failure detection and isolation
• EU — Engineering Unit
• DQF — Data Quality File
• GVI — Global Village Idiot
• SETI — Search for Extra Terrestial Intelligence
• NSL — Northrop Space Laboratory
• NSSCC — NORAD Space Surveillance Computation Center
• MONGO — Interactive graphics software package
• CTO — Color Temperature Orange
• CCL — Closed Conference Loop
• ZHR — Zenith Hourly Rate
• MTR — Mean Time to Restore
• SPP — Subset Preprocessor
• FGE — Fine Guidance Electronics
• PAD — Pulse Amplitude Discriminator
• DISR — Descent Imager/Spectral Radiometer
• PWM — pulse width modulated
• TAR — Test Authorization Request
• COTS — Cheap Off the Shelf
• AOR — Astronomical Observation Request
• TAG — Two-Axis Gimbal
• ZAP — Z Axis Precession
• LBVS — Luminous blue variable
• RM — Retrieval Mode
• SUMER — Solar Ultraviolet Measurements of Emitted Radiation
• NGS — National Geographic Society

• YSO — Young Stellar Object
• QPOE — Quick Position Oriented Event
• CELT — California Extremely Large Telescope
• SN — SuperNova
• SV — Science Verification
• SIA — Solar Inertial Attitude
• FAST — Fast Auroral Snapshot Explorer
• CSO — Caltech Submillimeter Observatory
• HTVL — Horizontal Takeoff Vertical Landing
• SCSP — Science and Culture Series Physics
• CSPN — Central Star of Planetary Nebula
• PDA — Photon Detector Assembly
• SAL — Space Astronomy Laboratory (Univ. Wisconsin, Madison WI)
• ACV — Alpha Canes Venatici
• HRA — High Resolution Apodizer
• FSM — First Servicing Mission
• SXT — Soft X-Ray Telescope
• CAI — Calcium Aluminum-rich Inclusion
• DN — Digital Number
• SCAS — Southern Cross Astronomical Society, Inc.
• SB — Spectroscopic Binary
• TFMRP — Transfer Function Mode Reduction Package
• PODPS — Post Observation Data Processing System
• SARA — Satellite pour Astronomie Radio Amateur
• TAUVEX — Tel Aviv University Ultraviolet Explorer
• JVO — Japanese Virtual Observatory
• AXAF — Assembly and Verification Working Group
• IRDC — Infrared Dark Cloud
• ABB — After the Big Bang
• FEM — Finite Element Model
• MCSA — Mir Cooperative Solar Array
• Z — Redshift Factor
• ARGOS — Advanced Research Global Observation Satellite
• GSPC — Guide Star Photometry Catalog
• PEP — Proposal Entry Processor
• ACRV — Astronaut Crew Rescue Vehicle
• AAA — Amateur Astronomers Association
• ETI — Extraterrestrial Intelligence
• SED — Spectral Energy Distribution
• LBN — Lynds Bright Nebula
• LMST — Local Mean Sidereal Time
• AESS — Institute of Electrical and Electronic Engineers - Aerospace and Electronics Systems Society
• LCRS — Las Campanas Redshift Survey
• IDT — Image Dissector Tube
• FPA — Focal Plane Assembly
• VSSSC — Variable Star Section Special Circulars
• VRCS — Vernier Reaction Control System
• SWAS — Submillimeter Wave Astronomy Satellite
• CCAR — Colorado Center for Astrodynamics Research
• XN — X-ray Nova

• STERJ — Solar, Terrestrial and Environmental Research Japan
• BMO — Black Moving Object
• DSD — Data Systems Division
• OSB — Operations Software Branch
• GCVS — General Catalog of Variable Stars
• FES — Fine Error Signal
• RNP — Rotation, Nutation and Precession
• OCB — Operational Configuration Baseline
• MEM — Maximum Entropy Method
• TZO — Thorne-Å»ytkow Object
• RPI — Rensselaer Polytechnic Institute (Rensselaer, NY)
• ORB — Observatoire Royal de Belgique (Royal Observatory of Belgium)
• VSSCI — Variable Star Section Circulars
• SST — Software Support Team
• IPS — Inches Per Second
• VSSRE — Variable Star Section Reprints
• TKSC — Tsukuba Space Center
• SERF — Space Environment Research Facility
• DCF — Data Capture Facility
• VRM — Venus Radar Mapper
• GEIS — Generic Edited Information Set
• AST — Apparent Solar Time
• UDMH — Unsymmetrical Dimethyl Hydrazine (Alar Metabolite)
• WXQ — Waxing Quarter
• HFQPO(S) — high-frequency quasi-periodic oscillation(s)
• NEA — Near-Earth Asteroid
• STIF — Software Test and Integration Facility
• XCS — XMM Cluster Survey
• SNAP — Structural Network Analysis Program
• CDMH — Cold Dark Matter Haloes
• SRS — Stellar Radiation Sensor
• CPMM — characters per millimeter
• BAC — Bordeaux Astrographic Catalog
• CAAS — Central Arkansas Astronomical Society
• ATR — Absolute Time Reference
• BOOK — Bio Optical Organized Knowledge
• GOX — Gaseous Oxygen
• SWEEPS — Sagittarius Window Eclipsing Extrasolar Planet Search
• SLOI — Satellite Lake Observatory Initiative
• SGRB(S) — short gamma ray burst(s)
• PK — Perek-Kohoutek
• EA — Eclipsing Algol
• NICMOS — Near-Infrared Camera and Multi-Object Spectrometer
• LBV — Luminous Blue Variable
• SPWEA — Space Weather
• OMS — Observatory Monitoring System
• WBHF — WideBand High Frequency
• TOYAL — Transactions of the Astronomical Observatory of Yale University
• VELLO — Very Low Luminosity Object
• WAA — Western Amateur Astronomers

• SUVSR — Scandinavian Union of Amateur Astronomers Variable Star Section
• DMS — Data Management Subsystem
• HIPO — Hierarchic Input-Process-Output
• SLTV — System Level Thermal Vacuum
• CSS — Catalina Sky Survey
• SAREX — Search and Rescue Exercise
• NEMP — Nitrogen-Enhanced Metal-Poor
• PEGA — Programs in Extra-Galactic Astronomy
• VFN — virtual file name
• ARAA — Annual Review of Astronomy and Astrophysics
• EJASA — Electronic Journal of the Astronomical Society of the Atlantic
• SPIF — Shuttle/POCC Interface Facility
• PNNV — Planetary Nebula Nucleus Variable
• NIMS — Near-Infrared Mapping Spectrometer
• OPB — Observation Planning Branch
• VGRF — Variable-Gravity Research Facility
• DOV — Director of Orbital Verification
• AWG — Astronomy Working Group
• GTO — Guaranteed Time Observer
• VPU — video processing unit
• SWAT — Swift Action Team
• BDF — Block Data Format
• BBH — Big Black Hole
• SCSA — Science and Culture Series Astrophysics
• IRAC — International Radio Advisory Committee
• RQZ — Radio Quiet Zone
• GMC — Giant Molecular Cloud
• ZOF — zone of exclusion
• TWA — TW Hydrae Association
• ADAF — Advection-dominated Accretion Flow
• SFS — Smallest Feature Size
• PTF — Payload Test Facility
• SQM — Strange Quark Matter
• CFCO — Committee for Crescent Observation
• SDMS — Spatial Data Management System
• WAA — Wiener Arbeitsgemeinschaft für Astronomie
• STOL — Systems Test and Operations Language
• AVO — Astrophysical Virtual Observatory
• LSO — Large Solar Observatory
• QZ — Quasi Zenith
• VZA — Viewing Zenith Angle
• CEMP — Carbon-Enhanced Metal-Poor
• SAGA — Solar Array Gain Augmentation
• RC — Reference Catalogue
• EAPU — External Auxiliary Power Unit
• RXTE — Rossi X-Ray Timing Explorer
• ACS — Advanced Camera for Surveys
• QPO — Quasi-periodic Oscillation
• ADIL — Astronomy Digital Image Library
• LENA — Low Energy Neutrino Astronomy

• TIUCS — Transactions of the International Union for Cooperation in Solar Research
• DPOSS — Digitized Palomar Observatory Sky Survey
• CAMAC — Computer-Aided Measurement and Control
• EVAC — East Valley Astronomy Club
• ENE — East North East
• QV — quick visual
• COMPTEL — Compton Telescope
• ROLUN — Reports of the Lund Observatory
• RGA — Rate Gyro Assembly
• O — Oblivion
• CIP — Celestial Intermediate Pole
• CCO — Catalogue of Cometary Orbits
• SJC — slit jaw camera
• IFT — Inverse Fourier Transform
• AQR — Aquarius
• AJD — Astronomical Julian Day
• FGS — Fine Guidance Sensors
• WIYN — Wisconsin Indiana Yale NOAO Telescope Consortium
• CVAS — Chippewa Valley Astronomical Society
• LIRG — Luminous Infrared Galaxy
• EMP — Extremely Metal-Poor
• CREAM — Cosmic Ray Energetics and Mass
• MWO — Mount Wilson Observatory
• DN — Dwarf Nova
• ULAS — Union List of Astronomy Serials
• CG — Compact Galaxy
• VERITAS — Very Energetic Radiation Imaging Telescope Array System
• RIACS — Research Institute for Advanced Computer Science
• SPT — South Pole Telescope
• RTLT — Round Trip Light Time
• DDCU — DC-to-DC Converter Unit
• OCS — Optical Control System
• SDP — science data packet
• UKIRT — United Kingdom Infrared Telescope
• NOT — NOrdic Telescope
• PMIRR — Pressure Modulated InfraRed Radiometer
• PASP — Publications of the Astronomical Society of Pacific
• SHAD — Stellar Horizon Atmospheric Dispersion
• WIRE — Wide-Field Infrared Explorer
• IRAC — Infrared Array Camera
• QE — Quality Engineer
• SQPN — staggered quadriphase pseudo-random noise
• MMR — Mean-Motion Resonance
• CAAA — Capital Area Astronomy Association
• WOMBAT — Wavelength-Oriented Microwave Background Analysis Team
• VILCO — Villanova University Observatory Contributions
• EKBO — Edgeworth-Kuiper Belt Object
• BCCP — Berkeley Center for Cosmological Physics
• SEB — Source Evaluation Board
• STR — Science Tape Recorder

• RVMA — Reviews in Modern Astronomy
• GXY — Galaxy
• PSL — Program Support Library
• STL — science trailer line
• THEMIS — Thermal Emission Imaging System
• STAVF — Space Telescope Assembly and Verification Facility
• AD — Analog to Digital
• PSR — Pulsar Supernova Remnant
• C&DH — Control and Data Handling
• GMRT — Giant Meter-wave Radio Telescope
• RMS — Remote Manipulator System
• P&A — Physics and Astronomy
• IDMP — International Daylight Measurement Program
• AGK — Astronomische Gesellschaft Katalog
• SPA — Solar Panel Assembly
• PRESTO — Project to Re-Engineer Space Telescope Observing
• PUSNO — Publications of the US Naval Observatory
• IMSL — International Mathematical and Statistical Library
• SOFA — Standards of Fundamental Astronomy
• IAAC — Internet Amateur Astronomers Catalog
• MU — Memory Unit
• GLOW — Gross Lift-Off Weight
• C/C — configuration control
• LV — Lunette Verte
• CMT — Carlsberg Meridian Telescope
• TSTO — Two-Stage-To-Orbit
• ESTR — Engineering and Science Tape Recorder
• APT — Automated Patrol Telescope
• SSRV — Space Science Reviews
• HTHL — Horizontal Takeoff Horizontal Landing
• RABF — Radio Astronomy Bandstop Filter
• DN — Dwarf Novae
• GSOWG — Ground Systems Operations Working Group
• IQL — Interactive Query Language
• CISCO — Cooled Infrared Spectrograph and Camera for OHS
• CASB — Catalogs and Survey Branch
• AOA — ASCA Online Arxiv
• CM — Critical mass
• WISARD — Web Interface for Searching Archival Research Data
• CNSR — Comet Nucleus Sample Return
• EAAS — East Antrim Astronomical Society
• SGEMP — Space-Generated Electromagnetic Pulse
• ORR — Orbit Readiness Review
• IBBTF — Imagination Baffled By The Facts
• OSS — Observation Support System
• EOSL — Earth Observation Systems Laboratory
• LMSC — Lockheed Missile and Space Corporation
• SIF — Science Instrument Formatter
• IDM — Intelligent Database Machine
• MSE — Milton S. Eisenhower library

• PUAMS — Publications of the Astronomical Institute of the University of Amsterdam
• PMDB — Project Management Data Base
• ASP — Analog Signal Processor
• UST — Universal Standard Time
• AET — Accuracy Enhancing Technology
• ULE — Ultralow Expansion
• RRAT — Rotating RAdio Transient
• TYC — Tycho
• MEV — million electron volts
• ACP — Aerosol Collector and Pyrolyser
• KAIT — Katzman Automatic Imaging Telescope
• SMOV — Servicing Mission Observatory Verification
• HERA — Hermes Robotic Arm
• LC — Las Campanas observatory
• SQIID — Simultaneous Quad Infrared Imaging Device
• CFCP — Center for Cosmological Physics
• SAM — Small Angle Maneuver
• SPIEL — Signal Processing Interactive Extensible Language
• SETA — Search for Extra Terrestrial Artifacts
• TCB — Barycentric Coordinate Time
• UGSU — UG SU Ursae Majoris
• AOC — Award Of Contract
• SUPRIME — SUbaru PRIME focus CAMera
• PFS — Percent Full Scale
• SFC — Space Forecast Center
• UGZ — UG Z Camelopardalis
• LWS — Long Wavelength Spectrometer
• ACS — Actuator Control System
• GBT — Green Bank Telescope
• SSC — Science Support Center
• CBS — Contract and Business Services
• TECU — Technology and Culture
• OCO — Oort Cloud Object
• LSST — Large Synoptic Survey Telescope
• ICSO — International Conference on Space Optics
• SCUBA — Submillimetre Common User Bolometer Array
• STEIS — Space Telescope Electronic Information System
• RFT — Rich Field Telescope
• PFI — Partial Frame Image
• SPE — Static Phase Error
• IRCS — Infrared Camera and Spectrograph
• OVIWG — Orbital Verification Implementation Working Group
• CVC — Current-to-Voltage Converter
• CCIR — Comit? Consultatif International Pour La Radio (French For Consultative Committee On International Radio
• BSG — Blue SuperGiant
• BLO — Bl Lac Object
• FPSA — FPA Structure Assembly
• AEDP — Astrometry and Engineering Data Processing
• RAG — Radio Astronomy Group
• FIRST — Far InfraRed and Submillimeter Space Telescope

• IRAIT — International Robotic Antarctic Infrared Telescope
• BRAVO — Back-End Redesign for Added Value for Observers
• TUASB — Tokyo University Institute of Space and Aeronautical Science Bulletin
• NPS — North Polar Sequence
• SANSA — South African National Space Agency
• NAO — National Astronomy Olympiad
• PCT — Program Coordinator Team
• CIB — Cosmic Infrared Background
• LWR — Long Wavelength Redundant
• E/A — Ephemeris/Attitude
• SIPS — Southern Infrared Proper Motion Survey
• CSAA — Committee on Space Astronomy and Astrophysics
• LCDM — Lambda Cold Dark Matter
• BITP — Bogolyubov Institute for Theoretical Physics
• SMM — science mission management
• DSOB — Data Systems Operations Branch
• R&I — Receiving and Inspection
• NLTE — Non-local Thermodynamic Equilibrium
• CIBR — Cosmic Infrared Background Radiation
• RPO — Research Programs Office
• RNGC — Revised New General Catalog
• CMBR — Cosmic Microwave Background Radiation
• TAROT — Télescope à Action Rapide pour les Objets Transitoires
• SESD — Science and Engineering Systems Division
• CMC — Carlsberg Meridian Catalogue
• MAST — Multimission Archive at Space Telescope
• PPF — Payload Processing Facility (USAF)
• MIDAS — Munich Image Data Analysis System
• STSDAS — Space Telescope Science Data Analysis System
• 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
• IRTF — Infrared Telescope Facility
• ODL — Observation Data Log
• XIS — X-ray Imaging Spectrometer
• AEG — Astro Event Group
• GMT — Greenwich Mean Time (now obsolete)
• BDEC — Bendix Field Engineering Corporation
• JOP — Joint Observing Program
• HLO — High Light Output
• REPT — Relativistic Electron-Proton Telescope
• EAAE — European Association for Astronomy Education
• TUASR — Tokyo University Institute of Space and Aeronautical Science Report
• ELIAS — European Large Area ISO Survey
• FOCAS — Faint Object Classification and Analysis System
• VIMOS — Visible Multiobject Spectrograph
• SEP — System Enhancement Plan
• VISTAR — visible space tracking and reconnaissance
• SEI — Space Exploration Initiative
• SRAA — Scenic Rim Astronomy Association, Inc.

• UKST — United Kingdom Schmidt Telescope
• MS — Meteor Scattering
• PNS — Pulsed Neutron Source
• ALAT — Airborne Large Aperture Telescope
• TML — Total Mass Loss
• UCSD — University of California San Diego
• C&A — calibration and analysis
• ASCA — Advanced Satellite for Cosmology and Astronomy
• CG — Cometary Globule
• CRAP — Completely Radical Anthropic Principle
• L — Lagrange
• DVA — Detector Vacuum Assembly
• BOAO — Bohyunsan Optical Astronomy Observatory
• MYSO — Massive Young Stellar Object
• FFD — First Fixation Duration
• ACURA — Association of Canadian Universities for Research in Astronomy
• GAF — Geographic Adjustment Factor
• BST — British Summer Time [GMT 0100]
• VSOLB — Variable Star Observers League in Japan - Bulletin
• SAREX — Space Amateur Radio Experiment
• STIF — Science and Technology Information Facility
• SS — Safing System
• LRG — Luminous Red Galaxy
• CTIO — Cerro Tololo Inter-American Observatory
• ITA — Institute of Theoretical Astronomy
• OC — Open Cluster
• CINEOS — Campo Imperatore Near-Earth Object Survey
• ETRD — Engineering Tape Recorded Data
• PNN — Planetary Nebula Nucleus
• OSCAR — Orbital Satellite Carrying Amateur Radio
• SVPHA — Soviet Physics Astronomy
• OPD — Operations and Data Processing Division
• SS — System Simulator
• SSP — Surface Science Packages
• IV — intra vehicular
• ETR — Engineering Tape Recorder
• MPCS — Minor Planet circulars Supplement
• GEM — Galileo Europa Mission
• DIG — Dwarf Irregular Galaxy
• CC — Candidate Companion
• QEH — Quantum Efficiency Hysteresis
• AAT — Anglo-Australian Telescope
• ASKAP — Australian Square Kilometre Array Pathfinder
• OPO — Operations Project Office
• SJR — Software Justification Report
• IPPW — International Planetary Probe Workshop
• CXO — Chandra X-ray Observatory
• OCX — observation comments file
• VRSD — Verification Requirements and Specifications Document
• DCEP — Delta Cepheid

• SUGRA — Supergravity
• XSC — Extended Source Catalog
• ATCA — Australia Telescope Compact Array
• RPSS — Remote Proposal Submission System
• PDBI — Plateau de Bure Interferometer
• EAFB — Edwards Air Force Base
• SWAN — Solar Wind ANisotropy
• TASS — The Amateur Sky Survey
• BAV — Bundesdeutsche Arbeitsgemeinschaft fur Veraenderliche Sterne
• LINER — Low Ionization Nuclear Emission Region
• SDAS — Scientific Data Analysis System
• ISPM — International Solar Polar Mission
• RLOF — Roche Lobe Overflow
• OV — Orbital Verification
• MOID — Minimum Orbit Intersection Distance
• CDIMP — Catalogue of Discoveries and Identifications of Minor Planets
• SSU — Steady State Universe
• AAAM — Active Amateur Astronomers of Maryland
• PW&SO — Publications of the Warner Swasey Observatory
• CHZ — Circumstellar Habitable Zone
• ♅ — Uranus
• LTM — Like The Moon
• CSV — Catalog of Suspected Variables
• NOMAD — Naval Observatory Merged Astrometric Dataset
• PASP — Proceedings of the Astronomical Society of the Pacific
• WIRCAM — Wide-field InfraRed Camera, instrument on the Canada-France-Hawaii Telescope
• DAV — Deerlick Astronomy Village
• DES — Dark Energy Survey
• OAO — Orbiting Astronomical Observatory
• XMM — X-ray Multi- Mirror satellite
• OT — Off-Topic
• TO — target of opportunity
• RC — Ritchey-Chretien
• SAS — Science Analysis Software
• DM — Dark Matter
• CSPAR — Center for Space Plasma and Aeronomic Research
• PSR — Project Status Review
• PROS — Post Reduction Offline Software
• ACM — Asteroids Comets Meteors
• LFAE — Light Field Attribute Explorer
• N — Nova
• APSB — Advance Planning Systems Branch
• AGAPE — Andromeda Galaxy and Amplified Pixels Experiment
• UNPSA — United Nations Programme on Space Applications
• CST — Constant
• SSPRV — Space and Solar Power Review
• LOTOSS — Lick Observatory and Tenagra Observatory Supernova Searches
• UMCP — University of Maryland College Park
• EIT — Extreme Ultraviolet Imaging Telescope
• SID — Software Implementation Directive

• OPUS — OSS and PODPS Unified Systems
• ASAS — All Sky Automated Survey
• MGS — Mars Global Surveyor
• DRS — Direct Receiving Station
• SPSS — Science Planning and Scheduling System
• BATC — Beijing-Arizona-Taiwan-Connecticut
• SDA — Science Data Analyst Small Computer Systems Interface
• FGC — Flat Galaxy Catalogue
• CRTS — Centre Royal de Teledetection Spatiale
• PWD — Pre-White Dwarf
• ISEE — International Sun Earth Explorer
• QPSK — quadriture phase shift keying
• OBP — Onboard Processor
• NEO — Near-Earth Object - Non-combatant Evacuation Operations
• PNG — Planetary Nebulae, Galactic
• SHAD — Stellar Horizon Attitude Determination
• TAU — Thousand Astronomical Unit
• IARA — Italian Amateur Radio Astronomy
• SIMA — Secondary Mirror Incremental Motor Actuator
• MOSES — Mission Operations and Systems Engineering Support
• ICF — Intrinsic Correlation Function
• STOCC — Space Telescope Operations Control Center (GSFC, Greenbelt MD)
• GSSS — Guide Star Selection System
• PORTS — Preliminary Operations Requirements and Test Support
• AAS — Archaeology Astronautics and Seti
• PSI — Planetary Science Institute
• ECT — Equator Crossing Time
• SOSYR — Solar System Research
• FGSAA — FGS Access Area
• LWS — Long-Wave Spectrograph
• ADS — Aitken Double Stars
• ASWG — Astronomical Science Working Group
• TCG — Geocentric Coordinate Time
• CNES — Centre National d'Etude Spatiales
• SIB — Science Instrument Branch
• MV — absolute visual magnitude
• RDI — Radiation Driven Implosion
• ATPI — Astronomy Through Practical Investigations
• GCC — Globular Cluster Candidate
• SEST — Swedish-ESO Submillimetre Telescope
• CNO — Carbon-Nitrogen-Oxygen
• LPICO — Lunar and Planetary Institute Contributions
• WKAA — West Kentucky Amateur Astronomers
• TAC — telemetry and command processor
• PEP — PhotoElectric Photometry
• CST — Constant Strain Triangle
• CCO — Central Compact Object
• SDM — Secondary Deployment Mechanism
• CMCC — Central Mission Control Centre
• M — Mira

• NEAP — Near Earth Asteroid Prospector
• DAG — Doğu Anadolu Gozlemevi
• MOXE — MOnitoring X-Ray Experiment
• ESB — Engineering Support Branch
• MLRS — McDonald Laser Ranging Station
• IPMO — Isolated Planetary-Mass Objects
• SMBH — Super Massive Black Hole
• TIC — Tycho Input Catalog
• FEB — Falling-Evaporating Body
• CP — Chemically Peculiar
• SHAR — Stellar Horizon Atmospheric Refraction
• CTRF — Celestial and Terrestrial Reference Frames
• START — Solar Thermal Analysis Review and Training
• NAIF — Navigation Ancillary Information Facility
• CNS — Computing and Network Services
• VPC — viewport coordinates
• COMICS — Cooled Mid-Infrared Camera and Spectrometer
• TRB — Test Review Board
• WFS — Wave Front Sensor
• OCST — Office of Commercial Space Transportation
• EUSO — Extreme Universe Space Observatory
• HESI — High Energy Solar Imager
• AH — ampere hours
• UGWZ — UG WZ Sagittae
• FASTT — Flagstaff Astrometric Scanning Transit Telescope
• OW — Outer Wall
• BPM — Bruce Proper Motion
• WDS — Washington Double Star
• RSG — Red Super Giant
• ILOC — International Lunar Occultation Center
• IB — Interstellar Band
• LEST — Large Earth-based Solar Telescope
• PAR — Photon Activity Rate
• TT — Terrestrial Time (replaced Ephemeris Time, ET)
• MOR — Mission Operations Room
• MOTV — Manned Orbital Transfer Vehicle
• APASS — AAVSO Photometric All-Sky Survey
• NLST — National Large Solar Telescope
• ERO — Extremely Red Object
• PRE — Photospheric Radius Expansion
• ODS — Our Dark Skies
• USMP — United States Microgravity Payload
• STDN — Satellite Tracking and Data Network
• HDOS — Hughes Danbury Optical Systems (Danbury CT)
• CSLG — Campus-wide Software License Grants Program
• SFU — Space Flier Unit
• KIC — Kepler Input Catalog
• LP — Luyten Palomar
• IIPS — Interactive Image Processing System
• BCD — Blue Compact Dwarf

• BZ — Brillouin zone - a uniquely defined primitive cell in reciprocal space
• HETE-2 — high energy transient explorer
• SINGS — Spitzer Infrared Nearby Galaxies Survey
• MW — Milky Way
• DS — Dwarf Star
• PTF — Palomar Transient Factory
• ABRIXAS — A BRoadband Imaging X-ray All-sky Survey
• ESIS — European Space Information System
• TIB — Telescope Instrument Branch
• RWA — Reaction Wheel Assembly
• E — Eclipsing
• VVDS — VIMOS-VLT Deep Survey
• ICRC — International Cosmic Ray Conference
• DBW — decibel reference to 1 watt
• TPI — Technical Proposal Instructions
• LOSS — Lick Observatory Supernova Search
• EAC — European Astronaut Centre
• MAG — Magnitude
• DCA — Detector Control Assembly
• NIU — NASCOM Interface Unit
• SER — Systems Engineering Report
• CIAO — Coronagraphic Imager with Adaptive Optics
• LST — Large Stellar Telescope
• SPG — Special Projects Group
• MT — Moving Target
• FSS — Flight Servicing System
• SVWG — Science Verification Working Group
• MMTO — Multiple Mirror Telescope Observatory
• XBP — X-Ray Bright Point
• OTS — Oasa Tamura Sugitani
• CXBR — Cosmic X-ray Background Radiation
• LOTIS — Livermore Optical Transient Imaging System
• SIS — SETI (Search for Extra-Terrestial Intelligence) Intercept System
• ECA — Electronics Control Assembly
• GDSO — Georgi Dobrovolski Solar Observatory
• SPS — Solar Power Satellite
• TRACE — Transition Region and Coronal Explorer
• SSSPM — SuperCOSMOS Sky Survey Proper Motion
• TLP — Transient Lunar Phenomenon
• Q&A — qualification and acceptance
• GC — Galactic Center
• PMPS — Parkes Multibeam Pulsar Survey
• NCSA — National Center for Supercomputer Applications (Urbana IL)
• USOC — Unified System Orbit Computation
• IRD — Interface Requirements Document
• TAAS — The Albuquerque Astronomical Society
• KM — Kilometres
• CGSS — Catalogue of Galactic S Stars
• MXRB — Massive X-Ray Binary
• SMS — Sun Moon and Stars

• ACA — Atacama Compact Array
• PWHHO — Publications of West Hendon House Observatory, Sunderland
• RORF — Radio/Optical Reference Frame
• FPAS — FPA Shroud
• KAO — Kuiper Airborne Observatory
• WFCAM — Wide Field Camera
• SHP — Standard Header Packet
• SVAL — Soviet Astronomy Letters
• MRSRM — Mars Rover and Sample Return Mission
• TSI — Total Solar Irradiance
• GPB — Group Parameter Block
• SMC — Small Magellanic Cloud
• URPX — Uranian Ring Plane Crossing
• PWN — Pulsar Wind Nebula
• EMP — Ephemerides of Minor Planets
• MMF — Moving Magnetic Feature
• CRL — Compound Refractive Lens
• SAO — Swinburne Astronomy Online
• CRRES — Combined Release Radiation Effects Satellite
• GHZ — Galactic Habitable Zone
• UCLAP — University of California Los Angeles - Astronomical Papers
• PVTEL — PV TELescopii
• IWCA — International Workshop on Cometary Astronomy
• PFR — Portable Foot Restraint
• NGST — Next Generation Space Telescope
• SEST — Swedish ESO Submillimeter Telescope
• TTC — telemetry, tracking, and command
• SMC — Standard Model of Cosmology
• SAOC — SAO Catalog
• RC — Red Clump
• ITT — International Telephone and Telegraph Corporation
• CTTS — Classical T Tauri Star
• GIMP — Geomagnetically Induced Motion Problem
• UGSS — UG SS Cygni
• DSN — deep-space network
• EARS — Electrostatic Atmospherics Radio Sensor
• VISTA — Visible and Infrared Survey Telescope for Astronomy
• BCD — Basic Calibrated Data
• NGS — New Generation STAR
• CVP — Continuously Variable Planetary
• CFHT — Canada-France-Hawaii Telescope
• IVC — Institute Visiting Committee
• ROTSE — Robotic Optical Transient Search Experiment
• SMM — Spectro-Mirror Mechanism
• LINEAR — Lincoln Near Earth Asteroid Research
• TRACE — Transition Regional and Coronal Explorer
• SPST — Science Planning and Scheduling Team
• SMO — Servicing Mission Office
• SEA — Sensor Electronics Assembly
• SF — Star Field

• ERRSAC — Eastern Regional Remote Sensing Applications Center
• DDA — Division on Dynamical Astronomy
• WGAS — Working Group on Astronomical Software
• WSAL — Winston-Salem Astronomical League
• PEPE — Plasma Experiment for Planetary Exploration
• WFAU — Wide-Field Astronomy Unit
• LHS — Luyten Half-Second
• EF — Event Foreground
• CHIP — Cosmic Hot Interstellar Plasma
• TB — Thermal Balance
• UAO — University of Arizona Observatories
• SEP — Solar Energetic Particle
• FEAT — Fine Error Averaging Test
• CAL — Casual Astronomy League
• BRAS — Baton Rouge Astronomical Society
• AUDS — ALFA Ultra Deep Survey
• COL — Collinder catalog
• SIRD — Support Instrumentation Requirements Document
• RSB — Research Support Branch
• BSS — Blue Straggler Star
• SSO — Special Studies Office
• NS — Neutron Star
• ECO — Earth crossing object
• SCARS — Science Computing & Research Support Division
• MBA — Main-Belt Asteroid
• ULX — Ultra-Luminous X-ray source
• GAAC — Gloucester Area Astronomy Club
• DCMF — Data Capture and Management Facility
• STVSW — Space Telescope Verification Software
• RTC — Researching The Cosmos
• SCUBA-2 — Submillimetre Common User Bolometer Array 2
• SCOA — Smithsonian Contributions to Astrophysics
• EAPJ — Electronic AstroPhysical Journal Letters
• GRB — Gamma Ray Bursters
• LN2 — liquid N2
• DIB — Diffuse Interstellar Band
• LETGS — Low Energy Transmission Gratings Spectrometer
• LONEOS — Lowell Observatory Near-Earth-Object Search
• LP — Lonely Planet
• SCAC — Science Computing Advisory Commitee
• SXARI — SX ARIetis
• WAC — Wide Angle Converter
• IMIO — Image Input/Output
• EOR — End of Record
• SCP — Small Computer Systems Interface
• CSWA — Committee on the Status of Women in Astronomy
• EOL — Earth Observing Laboratory (formerly ATD)
• MUSTANG — Multiplexed SQUID TES Array at Ninety GHz
• DE — Dwarf elliptical
• ADAS — Asiago DLR Asteroid Survey

• BCVS — Bibliographic Catalogue of Variable Stars
• LMXB — Low-Mass X-Ray Binary
• PASA — Pan-Arab Space Agency
• MONS — Measuring Oscillations in Nearby Stars
• NODO — NASA Orbital Debris Observatory
• CGRO — Compton Telescope
• DSOS — Dish Surface Optimization System
• SSRT — Single Stage Rocket Technology
• GMOS — Gemini Multi-Object Spectrographs
• CCITT — Consultative Committee on International Telegraph & Telephone
• OST — Observation Sequence Table
• PFM — Pre-Flight Module
• SWRI — Southwest Research Institute
• LSVT — Large Solar Vacuum Telescope
• CRAQ — Centre for Research in Astrophysics of Québec
• VLB — Very Long Baseline
• GKS — Graphic Kernel System
• MSO — Mount Stromlo Observatory
• CTWG — Calibration Targets Working Group
• AOSS — AURA Observatory Support Services
• NDC — Network Data Center
• OGLE — Optical Gravitational Lensing Experiment
• ACK — acknowldgement message
• SFD — SXT Full Disk
• STIC — Space Telescope Institute Council
• NLTT — New Luyten Two-Tenths
• PGPLOT — FORTRAN subroutine library for plotting graphics
• DDF — Directors Discretionary Funds
• LDE — Long Duration Event
• VF — Variable Frequency
• RCS — Readiness Control System
• IOTA — Infrared-Optical Telescope Array
• SXG — Spectrum-X-Gamma
• SPB — Science Planning Branch
• SIPE — Science Instrument Protective Enclosure
• LSA — Large Science Aperture
• VPO — VISTA Project Office
• HSI — Host System Interface
• CCMS — Command Control and Monitor System
• R-L — Richardson-Lucy
• CANX — Canadian Advanced Nanospace Experiments
• CMD — Color-Magnitude Diagram
• JSGA — Japan Spaceguard Association
• STFS — Space Telescope Flight Software
• ACIS — Advanced CCD Imaging Spectrometer
• SMA — Submillimeter Array
• XRB — X-Ray Background
• CMOS — Complimentary Metal Oxide Semiconductor
• ACT — Astrographic Catalog Tycho
• ORD — Operations Requirements Document

• SETG — Search for Extra-Terrestrial Genomes
• SSD — Science Support Division
• LOFAR — Low Frequency Array
• PRR — preliminary requirements review
• UG — U Geminorum
• MLSO — Mauna Loa Solar Observatory
• EPD — Expected Planetary Differences
• WSGS — White Sands Ground Station
• ASW — Address and Synchronization Word
• JFC — Jupiter Family Comets
• 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)
• CGRO — Compton Gamma Ray Obsrvatory
• WRO — Warren Rupp Observatory
• ALTS — Astronomy Lunch Time Seminar
• UKIDSS UKIRT — Infrared Deep Sky Survey
• RRL — RR Lyrae
• WF/PC — Wide Field/Planetary Camera
• SCT — Schmidt-Cassegrain Telescope
• SVA — Soviet Astronomy
• LSB — Low Surface Brightness
• US/PS — see PRESTO
• SOARD — Steward Observatory Asteroid Relational Database
• GRAB — Galactic Radiation and Background
• ECF — European Coordinating Facility
• PRB — Preliminary Review Board
• CODMAC — Committee on Data Management and Computing
• SIAF — Science Instrument Aperture File
• PACS — Photoconductor Array Camera and Spectrometer
• MKO — MAUNA KEA OBSERVATORY
• VOS — Virtual Operating System
• NESS — Near Earth Space Surveillance
• TFOV — target field of view
• SOGS — Science Operations Ground System
• SOB — Science Observatory Branch
• WINAR — Windsor Observatory Annual Report
• WDS — Washington Double Star Catalog
• SDF — Science Data Formatter
• SDS — Star Diagnosis System
• EMU — Extra-vehicular Mobility Unit
• CDBS — Calibration Data Base System
• AMASE — Astrophysics Multi-Spectral Archive Search Engine
• UVCS — Ultraviolet Coronal Spectrometer
• IRS — International Reference Star
• WFIS — Wide-Field-of-view Imaging Spectrometer
• PO — Primary Object
• OSG — Observatory Support Group
• PROPLYD — Protoplanetary Disk
• XANES — X-Ray Near Edge Spectroscopy
• GRAND — Gamma Ray and Neutron Detector (NASA)

• LSG — Liaison Scientists Group
• TBC — Time Base Correctors
• WYBT — Whole Year Blazar Telescope
• NTR — Nuclear Thermal Rocket
• LWP — Long Wavelength Primary
• HSC — Hierachical Storage Controller
• ACYG — Alpha CYGni
• GRU — Ground Replaceable Unit
• ♆ — Neptune
• CEP — CEPheid
• SAMPEX — Solar Anomalous And Magnetospheric Particle Explorer (spacecraft)
• PPM — Positions And Proper Motions (catalog)
• CFS — Chandrasekhar - Friedmann - Schutz instability
• MPP — multi-pinned phase
• DEFCAL — deflection calibration
• WAPP — Wide-base Arecibo Pulsar Processor
• EPAO — Educational and Public Affairs Office
• WFAO — Wide Field Adaptive Optics
• PBO — Pine Bluff Observatory
• FIRST — Faint Images of the Radio Sky at Twenty-centimeters
• SCP — Science Data Analyst
• GSP — General Support Pool
• AC — Ascendant Cusp
• GRS — Great Red Spot
• BSS — Bigelow Sky Survey
• NGC — New General Catalog
• NEAT — Near Earth Asteroid Tracking
• TAAA — Tucson Amateur Astronomy Association
• AIM — Aeronomy of Ice in the Mesosphere
• SCMS — STScI Code Management System
• PM — Primary Mirror
• DRD — Data Requirements Document
• PSR — Pulsar
• YSG — Yellow Super Giant
• WFPC2 — Wide Field Planetary Camera-2
• ASTRO — Autonomous Space Transport Robotic Operations
• CCAS — Cape Cod Astronomical Society
• PZT — Photographic Zenith Tube
• VMO — Valley of the Moon Observatory
• ISSA — Infrared Sky Survey Atlas
• SIMM — Standard Inline Memory Module
• DCL — Digital Control Language
• R&R — Reproducibility And Repeatability
• FIGV — Factor Inercial de Ganho solar do enVidracado
• TO — Texas Instruments
• EGRET — Energetic Gamma-Ray Experiment Telescope
• SSA — Star Selector Assembly
• STARS — Seismic Telescope for Astrophysical Research from Space
• TRES — Transatlantic Exoplanet Survey
• SCO — Software Change Order

• WBS — Wide Band Spectrometer
• SSS — SuperCOSMOS Sky Surveys
• MOMV — Manned Orbital Maneuvering Vehicle
• TAMS — Terminal-Age Main Sequence
• MPP — Multi-Pinned-Phase
• IRIS — InfraRed Imaging Surveyor
• IO — Interacting Object
• PSS — Palomar Sky Survey
• DCB — Design Change Board
• MOSS — Moving Object Support System
• WSF — Wake Shield Facility
• WIYN — Wisconsin, Indiana University, Yale University, and NOAO (National Optical Astronomy Observatories) Observatory
• EBA — Electronics Bay Assembly
• TSRS — Trieste Solar Radio System
• PASS — POCC Application Software Support
• BHXRT — Black Hole X-Ray Transient
• SBIG — Santa Barbara Instrument Group
• CVA — Central Valley Astronomers
• EO — Earth Observatory
• WDM — Warm Dark Matter
• CCDS — Centers for the Commercial Development of Space
• SFN — Star Formation Newsletter
• EBL — Extragalactic Background Light
• SCL — Service Control Level
• C&T — Communications and Tracking
• EB — Eclipsing Beta
• RAMBO — Robust associations of massive baryonic objects
• MUF — Mysterious Unknown Force
• RSN — Radio SuperNova
• EDB — Engineering Data Base
• STAC — Space Telescope Advisory Council
• SOFIA — Stratospheric Observatory for Infrared Astronomy
• CSM — Central Star Magnitude
• PDS — Photometric Data Systems
• SPYBAL — spectrum Y balance
• SAD — Supra-Arcade Downflow
• LDS — Luyten Double Star
• DE — Detector Efficiency
• TC — Test Conductor (Controller)
• VST — VLT Survey Telescope
• HPR — Hardware Problem Report
• IAU — International Astrophysical Union
• EOT — End Of Tape
• LFSA — List of Frequently Seen Acronyms
• EC — Embedded Cluster
• RSFC — Radially Stratified Flame Core
• STAN — Space Telescope Analysis Newsletter
• ORFEUS — Orbiting and Retrievable Far and Extreme Ultraviolet Spectrometer
• PEPSI — PEP System
• ESTEC — European Space Research and Technology Center

• CCS — Cool Carbon Star
• BATTERS — Bisei Asteroid Tracking Telescopes for Rapid Survey
• FTETTM — From The Earth To The Moon
• RS — Reed-Solomon error detection
• FD — File Descriptor
• CRSR — Center for Radiophysics and Space Research
• SLSN-I — hydrogen-poor SLSNe
• NIR — Near Infrared Research
• WFPC2 — Wide Field and Planetary Camera 2
• RE — ROSAT (ROentgen SATellite) EUV (Extreme Ultra-Violet)
• SDD — Single Dish Data
• SB — Super Bright
• LPCI — Lunar Phases Concept Inventory
• SPC — Short Period Comets
• VMC — Velocity Modulating Camera
• SIP — Software Implementation Plan
• MSC — Mission Support Calibration
• NTT — New Technology Telescope
• LM — Low Mass
• CSMA — Committee on the Status of Minorities in Astronomy
• LTP — Lunar Transient Phenomenon
• HRC — High Resolution Camera
• WBS — Work Breakdown Schedule
• SSE — Star Selector Encoder
• GRB(S) — gamma ray burst(s)
• UGWZ — U Gem variable type star (WZ Sagittae sub-type)
• ASIAA — Academia Sinica Institute of Astronomy and Astrophysics
• EME — Earth-to-Moon-to-Earth
• VVS — Vereniging voor Sterrenkunde
• CODE — Creation Out of Deep Energy
• NFF — New Firm Formation
• WHDF — William Herschel Deep Field
• BIMA — Berkeley-Illinois-Maryland Array
• OAOT — Orbiting Astronomical Observatory Technology
• SRC — Science Research Council (formerly DSIR) (U.K.)
• MUNICS — MUnich Near-Infrared Cluster Survey
• CGCS — Cool Galactic Carbon Star
• TAC — The Astronomy Connection
• TLE — Total Lunar Eclipse
• MI — Maximum Influence
• LAL — LALande
• MHGL — Mexican Hat Gravitational Lens
• MTL — Mission Time Line
• QBSA — Quarterly Bulletin on Solar Activity
• GASA — Graduate Astronomy Students Association
• UVOT — Ultraviolet Optical Telescope
• ECEF — EarthCentered EarthFixed
• CMF — Core Mass Function
• AER — Astronomy Education Review
• SS — Shooting Stars

• HVPS — High Voltage Power Supply
• MFP — magnetic field perturbation theory
• EED — Extracted Engineering Data
• MDB — multiplexed data bus
• SXPHE — SX PhoEnicis
• SNY — Starry Night Backyard
• R — Ray
• LIC — local interstellar cloud
• AMSU — Advanced Mass Spectrometry Unit
• VLM — Very Low Mass
• TCS — Thermal Control System (Subsystem)
• LTT — Luyten Two-Tenths
• ACTS — Advanced Communications Technology Satellite
• SDAS — Scarborough And District Astronomy Society
• INFOL — Ingredient Necessary FOr Life
• WAT — Wide Angle Tail
• TAMS — Terminal Age Main Sequence
• GCI — geocentric intertial
• ICET — International Center for Earth Tides
• DNS — Double Neutron Star
• ACPG — Astronomical Community Participation Group
• B — Barnard
• BLAST — Balloon-borne Large Aperture Submillimeter Telescope
• CAMC — Carlsberg Automatic Meridian Circle
• WCT — Window Correction Table
• WSO — World Space Observatory
• NCP — North Celestial Pole
• IAPPP — International Amateur/Professional Photoelectric Photometry
• SZE — Sunyaev-Zeldovich Effect
• SDH — science data header
• MMTF — Maryland-Magellan Tunable Filter
• MEPCO — Meeting of European Planetary and Cometary Observers
• DBSA — Database and System Administration team
• EGP — Extrasolar Giant Planet
• RFO — Robert Ferguson Observatory
• ODX — Occular Dynamic eXperiment
• HKO — Hong Kong Observatory
• PMS — Pre–Main Sequence
• FFI — Full Frame Image
• HR — Hertzsprung-Russell
• UESAC — Uppsala-ESO Survey of Asteroids and Comets
• SSB — Science Software Branch
• CTA — Computer Technology Associates (GSFC)
• PCAS — Planet-Crossing Asteroid Survey
• BO — Biological Origin
• SOFA — Selectable Optical Filter Assembly
• WTTS — Weak-Line T-Tauri Star
• SH — Super Hot
• UXOR — UX ORionis objects
• AP.J — Astrophysical Journal

• AP — Astral Projection
• LS — List Star
• QHO — Quail Hollow Observatory
• NA — Negative Alignment
• ARAS — Astronomical Ring for Access to Spectroscopy
• MOST — Microvariability and Oscillations of STars Telescope
• SSC — STEIS Steering Committee
• SSPS — Sky Survey Prototype System
• TSS — Texas supernova survey
• CA — Coronagraphic Apodizer
• UV-VIS — Ultraviolet - Visible
• ILRT — intermediate-luminosity red transients
• IYA — International Year of Astronomy
• VMOA — Valley of the Moon Observatory Association
• OAO — Okayama Astrophysical Observatory
• RSA — Revised Shapley-Ames
• DCX — Delta Clipper Experimental
• IMAGE — Imager for Magnetopause to Auroral Global Exploration
• TR — TRansit
• MPS — Microlensing Planet Search
• TMN — Tokyo Meteor Network
• VSSC — Vikram Sarabhai Space Centre
• RCB — R Coronae Borealis
• SPSO — Science Program Selection Office
• MACRO — Monopoles, Astrophysics, and Cosmic Ray Observatory
• MPPG — Mars Program Planning Group
• VFIR — Very Far Infra-Red
• ASWG — ATST (Advanced Technology Solar Telescope) Science Working Group
• GSY — Galactic Standard Year
• XRF — X-Ray Flash
• ULIRG — Ultraluminous Infrared Galaxy
• NGT — Next Generation Telescope
• HAC — Huachuca Astronomy Club
• GN — Galactic Nebula
• F — Fraunhofer lines
• SPD — Science Programs Division
• WUVC — Wezen Updated Variability Catalogue
• MPEC — Minor Planets Electronic Circular
• NT — Non-Thermal
• SIDS — SI Detector System
• SLOWPOKES — Sloan Low-mass Wide Pairs of Kinematically Equivalent Stars
• 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
• VERA — VLBI Exploration of Radio Astrometry
• GGC — Giant Gravity Core

• WMAP — Wilkinson Microwave Anisotrophy Probe
• URO — Unidentified Red Object
• RSAA — Research School of Astronomy and Astrophysics
• NSUM — Non-Spatial Universal Mechanics
• SCRT — Stockholm Centimetre Radio Telescope
• SGD — Solar Geophysical Data
• BHAS — Black Hills Astronomical Society
• BB — Black-body
• IUESIPS — Iue Spectral Image Processing System
• MACO — Mars Atmospheric Constellation Observatory
• SPIRIT — SPace InfraRed Imaging Telescope
• HMC — Halley Multicolor Camera
• STIS — Space Telescope Imaging Spectrograph
• SN — Signal-to-Noise
• SLSN-II — hydrogen-rich SLSNe
• MIPS — Multi-band Imaging Photometer
• OZ — Objective Zenith
• WFPCII — Replacement For WFPC
• SAR — Software Analysis Room
• CCF — Cosmogenic Correlation Factor
• HGD — Hot Gas Discharge
• CRAF — Committee on Radio Astronomy Frequencies
• COD — Carbon Oxygen Dwarf
• NLDP — National Launch Development Program
• SNU — Solar Neutrino Units
• VSAT — Very Small Angle Tracker
• CIDA — Cometary Interplanetary Dust Analyzer
• WYAS —