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Scientific & Educational >> Astronomy Abbreviations

Look through 3189 acronyms and abbreviations related to Astronomy:

• IMHO — In My Humble Opinion
• HIV — Human Immunodeficiency Virus I
• LAN — Local Area Network
• ETA — Estimated Time of Arrival
• HIPAA — Health Insurance Portability and Accountability Act of 1996
• PPNE — Proto-Planetary Bebulae
• AHRQ — Agency for Health, Research, and Quality
• PNX — Pulsar Network Exchange
• ROM — Read-Only Memory
• MM — Millimeter
• FTP — File Transfer Protocol
• COBRAS-SAMBA — Cosmic Background Radiation Anisotropy Satellite / Satellite for Measurement of Background Anisotrop
• NHLBI — National Heart, Lung, and Blood Institute
• LUNNO — Lunar Upper Navigation Nacelle Orb
• LASER — Light Amplification By Stimulated Emission Of Radiation (cf. Maser)
• ASAP — As Soon As Possible (pronounced AY-sap)
• CPU — Central Processing Unit
• ANSI — American National Standards Institute, Inc.
• ICD — Interface Control Document
• A — Ampere
• WWW — World Wide Web
• AIAA — American Institute of Aeronautics and Astronautics, Inc.
• RF — Radio Frequency
• CDR — Critical Design Review
• WHO — World Health Organization
• BTW — By The Way
• UFO — Unidentified Flying Object
• CSA — Canadian Space Agency
• QC — Quality Control
• ISO — International Organization for Standardization
• SAR — Search And Rescue
• AFAIK — As Far As I Know
• PDR — Preliminary Design Review
• CCB — Configuration Control Board
• ESA — European Space Agency
• IP — Internet Protocol
• ELV — Expendable Launch Vehicle
• A&AT — Astronomical and Astrophysical Transactions
• EOF — End Of File
• CY — Calendar Year
• MOA — Memorandum Of Agreement
• EEO — Equal Employment Opportunity
• FYI — For Your Information
• CD — Compact Disc
• CBO — Congressional Budget Office
• GO — General Observer
• COB — close of business (End of duty day)
• CV — Curriculum Vitae
• NFS — Network File System
• GATT — General Agreement on Tariffs and Trade (government)

• AU — Astronomical Unit
• ROI — Region of Interest
• RFP — Request For Proposal
• CKSM — checksum
• MB — Megabyte
• A&ARV — Astronomy and Astrophysics Review
• HEAO — High Energy Astronomy Observatory
• STS — Space Transportation System
• DOT — Department of Transport
• APU — Auxiliary Power Unit
• PPM — parts per million
• MOU — Memorandum of Understanding (an MOU between Food & Drug Administratin and a regulatory agency in another country allows mutual recognition of inspections)
• ADS — Astrophysics Data System
• FOV — Field Of View (satellite)
• R&D — Research & Development
• E&PSL — Earth and Planetary Science Letters
• SIR — Shuttle Imaging Radar
• AHU — Air Handling Unit
• PT — Physical Therapy
• COSPAR — Committee on Space Research (ICSU)
• WAN — Wide Area Network
• DDL — Data Definition Language
• DMSP — Defense Meteorological Satellite Program (U.S.)
• ACE — Advanced Composition Explorer
• MRI — Magnetic Resonance Imaging
• ADP — Automated Data Processing
• AAS — American Astronomical Society
• MPH — Miles Per Hour
• ROM — Rough Order of Magnitude
• CRS — Congressional Research Service
• IFOV — Instantaneous Field Of View
• SCSI — Small Computer System Interface
• BTU — British Thermal Unit
• NSO — National Solar Observatory
• SN — Space Network
• ASTM — American Society for Testing and Materials (Philadelphia, Pennsylvania)
• EST — Eastern Standard Time
• OSO — Orbiting Solar Observatory
• USAF — United States Air Force
• FAR — Flight Acceptance Review
• BAT — Burst Alert Telescope
• DEC — Digital Equipment Corporation
• ACRIM — Active Cavity Radiometer Irradiance Monitor (EOS)
• ACS — American College of Surgeons
• OPD — Outpatient Department
• HMO — Health Maintenance Organization
• VHF — Very High Frequency
• JAAVSO — Journal of the American Association of Variable Star Observers
• WAXD — Wide-Angle X-Ray Diffraction
• JAXA — Japan Aerospace Exploration Agency

• FIFO — First In, First Out
• LTE — Local Thermodynamic Equilibrium
• MTBF — Mean Time Before Failure
• ASCII — American National Standard Code for Information Interchange
• ISF — Industrial Space Facility
• DME — Durable Medical Equipment
• BAE — British Aerospace Systems, LTD
• PAH — Polycyclic Aromatic Hydrocarbon
• PHP — Planetary Horizontal Platform
• KG — Kilogram
• DCC — Document Control Center
• I/O — Input/Output
• CM — Centimeter
• B-V — Binary - Variable star
• RAM — random-access memory
• URL — Universal Resource Locator
• MRB — Material Review Board
• GMP — Good Manufacturing Practice
• ZAND — Z ANDromedae
• SQA — Software Quality Assurance
• NM — Nanometer
• GPS — Global Positioning System (ex-NAVSTAR)
• CAP — College of American Pathologists
• ISRO — Indian Space Research Organisation
• N/A — Not Applicable
• SIG — Special Interest Group
• FM — Flight Model
• FOS — Faint Object Spectrograph
• ISO — Infrared Space Observatory
• OTA — Optical Telescope Assembly
• CRO — Contract Research Organization
• EU — European Union (1994; formerly referred to as the EEC or EC)
• CM — Configuration Management
• CEN — Committee European de Normalisation
• UHF — Ultra High Frequency (300-3000 MHz; 1m-10cm)
• FTA — Fault Tree Analysis
• FFT — Fast Fourier Transform
• APS — American Physical Society
• BMA — British Medical Association
• SISEX — Shuttle Imaging Spectrometer Experiment
• CHSAJ — Chinese Society of Astronautics Journal
• A/N — Alphanumeric
• FD — Flight Day
• M&PS — Meteoritics and Planetary Science
• M — Meter
• SRL — Space Radar Laboratory
• TBD — To Be Determined
• SAS — Small Astronomy Satellite
• R&QA — Reliability & Quality Assurance
• LOE — Level Of Effort

• AJ — Astronomical Journal
• GMT — Giant Magellan Telescope
• NCCLS — National Committee for Clinical Laboratory Standards
• ADF — Astrophysics Data Facility
• CHJAA — Chinese Journal of Astronomy and Astrophysics
• LOR — Lunar Orbit Rendezvous
• TV — Television
• ☿ — Mercury
• HCFA — Health Care Financing Administration
• GR — General Relativity
• IRB — Institutional Review Board
• AMU — Atomic Mass Unit
• PPO — Preferred provider organization
• CRT — Cathode Ray Tube (type of TV)
• DC — Direct Current
• BHB — Black Hole Bang
• SDD — Software Design Document
• PIFOV — Planet In Field Of View
• LEO — Low Earth Orbit (satellite communications)
• CRF — Case Report Form
• ADA&A — Advances in Astronomy and Astrophysics
• MADOO — Madras Observatory Astronomical Observations
• CEMDA — Celestial Mechanics and Dynamical Astronomy
• BASD — Ball Aerospace Systems Division
• P&SS — Planetary and Space Science
• SCA — Shuttle Carrier Aircraft
• MSFC — Marshall Space Flight Center (Huntsville AL)
• P/SOS — Payload/Spacecraft Operations Simulator
• UCL — University College London
• SPR — Software Problem Report
• MHZ — Megahertz (Megacycles Per Second)
• P-E — Perkin-Elmer Corporation
• A&A — Astronomy and Astrophysics
• LOS — Line Of Sight
• LOI — Lunar Orbit Insertion
• SF — Science Fiction
• F&CRE — Flower and Cook Observatory Reprints
• RFI — Radio Frequency Interference
• NSF — National Sanitation Foundation
• AOCS — Attitude and Orbit Control System
• HV — High Voltage
• ISS — International Space Station
• NAI — No Action Indicated (Most Favorable Food & Drug Administration Post-inspection Classification)
• ADIL — Astronomy Data Image Library
• BAICZ — Bulletin of the Astronomical Institutes of Czechoslovakia
• AARP — American Association of Retired Persons
• BCD — Binary-Coded Decimal
• CW — Clockwise
• DAR — Defense Acquisition Regulation
• CSTC — Consolidated Space Test Center

• A&G — Astronomy and Geophysics
• FORTRAN — FORmula TRANslation (a computer language)
• ZEPLIN — ZonEd Proportional scintillation in LIquid Noble gases
• ATO — Abort To Orbit
• DUNRE — Dunsink Observatory Reprints
• AA&AA — Astronomy and Astrophysics Abstracts Heidelberg
• COMSP — Commercial Space
• HOPPS — Hospital Outpatient Prospective Payment System
• NSA — National Security Agency
• DOD — United States Department of Defense
• MIS — Management Information System (OSHA)
• QA — Center for Quality Assurance in International Education
• NEC — National Electrical Code
• ANS — Astronomical Netherlands Satellite
• E-ELT — European Extremely Large Telescope
• FAQ — Frequently Asked Questions (sometimes Pronounced Fak)
• SRM — Solid Rocket Motor
• GEM — Giotto Extended Mission
• CCAFS — Cape Canaveral Air Force Station, an air force base in Florida where NASA launches satellites from.
• JSC — Johnson Space Center (Houston, TX)
• DRS — Data Relay Satellite
• AHA — American Hospital Association
• FY — Fiscal Year
• AAMI — Association for the Advancement of Medical Instrumentation
• ALS — Advanced Launch System
• DFRC — Dryden Flight Research Center
• PR — Problem Report
• SAAOC — South African Astronomical Observatory Circular
• SME — Solar Mesosphere Explorer
• ESAJ — European Space Agency Journal
• HF — High Frequency
• NASP — National Aerospace Plane
• NIOSH — National Institute for Occupational Safety and Health
• SOW — Statement Of Work
• EDO — Extended Duration Orbiter
• ST — Space Telescope
• CFR — Code of Federal Regulations
• MS — Millisecond
• XEUS — X-Ray Evolving Universe Spectroscopy Mission
• RPM — Revolutions Per Minute, (Rotations Per Minute)
• BUBES — Bulletin of the University of Besancon Observatory
• BER — Bit-Error Rate
• JALPO — Journal of the Association of Lunar & Planetary Observers
• OSSE — Oriented Scintillation Spectrometer Experiment
• LM — Lunar Module
• STR — Software Test Report
• PDP — Postinsertion Deorbit Preparation
• K — Kilo-
• AAAS — American Association for the Advancement of Science
• AAMC — American Association of Medical Colleges

• CDM — Cold Dark Matter
• JPL — Jet Propulsion Laboratory (California Institute of Technology) (NASA)
• DAOAR — Dominion Astrophysical Observatory Annual Report
• CHJSS — Chinese Journal of Space Science
• FDA — Food Drug Administration
• ROI — Return on Investment
• ST — Star Tracker
• QJRAS — Quarterly Journal of the Royal Astronomical Society
• WP — Work Package
• ALEXIS — Array of Low Energy X-ray Imaging Sensors
• SI — Scientific Investigation
• PABEI — Progress in Astronomy
• COBE — Cosmic Background Explorer Satellite (NASA)
• DMA — direct memory access (computer term)
• FU — Flight Unit
• ASC — Ambulatory Surgery Center
• JSAR — Journal of Space Astronomy Research
• CMB — Cosmic Microwave Background
• APO — Apache Point Observatory
• CHSST — Chinese Space Science Technology
• WG — Working Group
• RAS — Royal Astronomical Society
• FF — Flat Field
• MOSPO — Mobile Satellite Photometric Observatory
• JASEG — Journal of the Astronomical Society of Egypt
• ABBOO — Abbadia Observatory Observations
• DOE — United States Department of Energy (government)
• NAS — United States National Academy of Sciences
• CPI — Continuous Process Improvement
• BBF — Bursty Bulk Flow
• ND — NASA Document
• O&M — Operation and Maintenance
• CASJ — Canadian Aeronautics and Space Journal
• ERBS — Earth Radiation Budget Satellite
• DFRF — Dryden Flight Research Facility
• ASTRA — Advanced Star Tracker
• SVD — Singular Value Decomposition
• NAM — National Association of Manufacturers
• LARC — Langley Research Center (NASA)
• FTE — Full-Time Employee
• D — Diameter
• TES — Thermal Emission Spectrometer
• DSCS — U.S. Defense Satellite Communications System
• LED — law enforcement desk; light emitting diode
• ADC — Analog-Digital Converter
• IUS — Inertial UPper Stage (was Interim UPper Stage)
• LCC — Launch Control Center (KSC)
• IR — Infrared
• DUNOP — Dunsink Observatory Publications
• LEM — Lunar Excursion Module

• PALLO — Publications of the Allegheny Observatory of the University of Pittsburgh
• BNSC — British National Space Centre
• FITS — Flexible Image Transport System
• IEC — International Electrotechnical Commission
• JILA — Joint Institute for Laboratory Astrophysics
• SNR — Signal-to-Noise Ratio
• JAPAS — Journal of Astrophysics and Astronomy Supplement
• ASRM — Advanced Solid Rocket Motor
• DEC — Declination
• JANSC — Journal of Astronautical Sciences
• NORAD — North American Air Defense (Command)
• OMB — Office of Management and Budget (U.S.)
• 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.
• MOL — Manned Orbiting Laboratory
• RTLS — Return To Launch Site
• DOMSAT — Domestic Communications Satellite System
• SST — States Supersonic Transport
• D — Director
• NASDA — National Space Development Agency of Japan
• IAU — International Astronomical Union
• JOP — Jupiter Orbiter Probe
• NIST — National Institute of Standards and Technology
• SSI — Space Studies Institute
• NOAA — National Oceanic and Atmospheric Administration (US)
• ECSS — European Cooperation for Space Standardization
• PADEU — Publications of the Astronomy Deparment of the Eotvos Lorand University
• VLF — Very Low Frequency
• SSID1 — Soviet Space Insertion Diverter One
• ROSAT — Roentgen Satellite
• OS — Operating System
• HZ — cycles per second (hertz)
• CHIME — College of Healthcare Information Management Executives
• FRR — Flight Readiness Review
• SLAR — Side-Looking Airborne Radar
• AMA — American Medical Association
• KSC — John F. Kennedy Space Center
• HQ — Headquarters (HDQ Preferred)
• OIG — Office of Inspector General
• DC — Delta Clipper
• HR — HUMAN RESOURCES
• IPA — Individual Practice Association
• HSP — High Speed Photometer
• TLA — Three Letter Abbreviation
• NSP — NASA Support Plan
• VATOP — Vatican Observatory Publications
• LGA — Low Gain Antenna
• MMS — Module Management System
• PHRMA — Pharmaceutical Research and Manufacturers of America (formerly PMA, Pharmaceutical Manufacturers Association)
• SARA — Society of Amateur Radio Astronomers
• SSME — Space Shuttle Main Engine

• TM — Telemetry
• SADE-1 — Solar Array Deploy Electronics-11
• COTS — Commercial Off the Shelf Software
• SUMS — Shuttle Upper Atmosphere Mass Spectrometer
• BPS — bits per second
• PDS — Planetary Data System
• PM — Pressurized Module
• OAI — Official Action Indicated (serious Food & Drug Administration post-inspection classification)
• EUVE — Extreme Ultraviolet Explorer (NASA Satellite)
• BASBR — Bulletin of the Astronomical Society of Brazil
• CCTV — Closed Circuit Television
• WASOA — Washburn Observatory Astrophysics
• ARMOL — Armagh Observatory Leaflet
• CASJQ — Canadian Aeronautics and Space Journal Quarter
• AFSD — Air Force Space Division
• ESDAC — European Space Data Center
• AO — Adaptive Optics
• NRC — National Response Center
• AW&ST — Aviation Week & Space Technology
• NASM — National Air and Space Museum
• DSN — Deep Space Network - network of large antennas and communication facilities.
• UV — Ultraviolet (Light)
• GSFC — Goddard Space Flight Center (Greenbelt, MD)
• PSI — Pounds Per Square Inch (Static Pressure)
• MMU — Manned Maneuvering Unit
• BH — Black Hole
• USP — United States Pharmacopeia
• ERS — Earth Resources Satellite
• N — Nitrogen
• RSA — Russian Space Agency
• MADOB — Madras Observatory Observations
• ESTEC — European Space Research and Technology Centre
• CRC — Contrôle de Redondance Cyclique (French: Cyclic Redundancy Check)
• UT — University of Texas
• RADAR — RAdio Detection And Ranging
• HD — Hilary Duff
• GAO — Government Accountability Office [formerly the General Accounting Office]
• AT — Acceptance Test
• ASCA — Advanced Satellite for Cosmology & Astrophysics
• ESRO — European Space Research Organisation
• SA — Solar Array
• TNM — The New Millenium
• MCO — Mars Climate Orbiter
• DD — Deputy Director
• CAPS — Cassini Plasma Spectrometer
• N — Newton
• CITECH — Center for Information on Technology in Healthcare
• SIM — Simulator
• AGB — Asymptotic Giant Branch
• UTC — Coordinated Universal Time

• CRAF — Comet Rendezvous/Asteroid Fly-by
• IEEE — Institute of Electrical and Electronic Engineers, Inc.
• AMPS — Atmospheric Magnetospheric Plasma System
• SNII — SuperNova of Type II
• MMDA — Michigan Medical Device Association
• SDR — System Design Review
• LRB — Liquid Rocket Booster
• IIRC — If I Recall Correctly
• NEMA — National Electric Manufacturer's Association
• CTE — Charge Transfer Efficiency
• MGMA — Medical Group Management Association
• R/T — Real Time
• NBS — National Bureau of Standards (US)
• MTPE — Mission To Planet Earth
• LMSS — Lunar Mapping and Survey System
• IDE — Investigational Device Exemption
• EU — Expanded Universe
• KHZ — kilohertz (1000 cycles per second)
• EOL — End Of Line
• SPARTAN — Shuttle Pointed Autonomous Research Tool for Astronomy
• ACMAN — Astronomical Contributions from the University of Manchester
• LPS — Launch Processing System
• ABHI — Association of British Health-Care Industries
• AREG — Astronomical Register
• ISAS — Institute of Space and Astronautical Sciences (Japan)
• PCM — Pulse-Code Modulation
• CASE — computer-automated software engineering
• WISE — Wide-Field Infrared Survey Explorer
• LANL — Los Alamos National Laboratory
• DMERC — Durable Medical Equipment Regional Carrier
• GTO — Geostationary Transfer Orbit
• RTG — Radioisotope Thermoelectric Generator
• GIF — Graphic Interchange Format
• DIST — Distance
• MEM — Meteoroid Exposure Module
• DBMS — Data Base Management System
• EOY — End-Of-Year
• IUE — International Ultraviolet Explorer
• S/N — Serial Number
• OPF — Orbiter Processing Facility
• OV — Orbital Vehicle
• NSI — NASA Science Internet
• FTC — Federal Trade Commission (U.S.)
• 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
• ADFRF — Ames-Dryden Flight Research Facility
• DSMB — Data Safety Monitoring Board
• NIH — NATIONAL INSTITUTE OF HEALTH
• ANEDI — Annals of the Royal Observatory, Edinburgh
• NASAS — NASA Special Publication
• COSTAR — Corrective Optics Space Telescope Axial Replacement

• AOA — Angle Of Attack
• SSTO — Single-Stage-to-Orbit
• PM — Project Manager
• WFF — Wallops Flight Facility
• ROSA — Romanian Space Agency
• JEM — Japanese Experiment Module
• AP — Array Processor
• MOC — Mars Observer Camera
• RISC — Reduced Instruction Set Computer
• GMT — Greenwich Mean Time (Zulu)
• MFPE — Mission from Planet Earth
• OSCAR — Orbiting Satellite Carrying Amateur Radio
• INS — Inertial Navigation System
• APL — Applied Physics Laboratory (at Johns Hopkins)
• PHASP — Physics and Astrophysics from Spacelab
• SAO — Smithsonian Astrophysical Observatory
• PRAES — Progress in Aerospace Sciences
• GE — General Electric American Communications Inc.
• APM — Attached Pressurized Module (a.k.a. Columbus)
• FAC — Facilities
• NASAR — NASA Reference Publication
• RSN — Real Soon Now [which may be a long time coming]
• POEM — Polar-Orbiting Earth Mission
• ACICH — Astronomical Circular
• RA — Right Ascension
• APJS — Astrophysical Journal Supplement Series
• JAPOA — Japan Amateur Photoelectric Observers Association
• ATV — Automated Transfer Vehicle
• NCOS — National Commission on Space
• APJ — Astrophysical Journal
• CEMEC — Celestial Mechanics
• AACCS — Analytical Approach to Candidate Constellation Selection
• ROTFL — Roll On The Floor Laughing
• CHIPS — Cosmic Hot Interstellar Plasma Spectrometer
• 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
• 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)
• GSC — Guide Star Catalog
• ESRIN — European Space Research Institute
• OSS — Office of Space Sciences
• MECO — Main Engine Cutoff
• SDAC — Solar Data Analysis Center
• NASAL — NASA Circular Letter
• NIST — National Institute of Standards & Technology (US)
• PR — Public Relations
• CDRH — Center for Devices and Radiological Health (Food & Drug Administration)
• ASTD — Advanced Space Technology Division
• UT — Universal Time
• LAMOST — Large sky Area Multi-Object fiber Spectroscopic Telescope
• CDSF — Commercially Developed Space Facility
• RCS — Reaction Control System/Subsystem

• DSS — Deep Space Station
• ASHP — American Society of Hospital Pharmacists
• COKON — Commmunications of the Konkoly Observatory Hungary
• MVM — Mariner Venus/Mercury
• MPL — Mars Polar Lander
• TAG — Technical Advisory Group for Biological Control Agents of Weeds
• RVU — Relative Value Unit
• MIT — Massachusetts Institute of Technology (U.S.)
• FHST — fixed-head star tracker
• CM — Command Module
• CMP — Competitive Medical Plan
• NRT — near real time
• NASAC — NASA Conference Publication
• PPCAS — Publication of the Pomona College Astronomical Society
• AURA — Association of Universities for Research in Astronomy, Inc.
• ASI — Agenzia Spaziale Italiana
• EAPSNET — East-Asian Planet Search Network
• MOA — Microlensing Observations in Astrophysics
• AXAF — Advanced X-Ray Astrophysics Facility
• EBCI — Eclipsing Binaries Circulars
• LCROSS — Lunar CRater Observation and Sensing Satellite
• ASPP — Atmospheric and Space Plasma Physics
• PPARC — Particle Physics and Astronomy Research Council
• AG — Astronomische Gesellschaft
• ARC — Ames Research Center (NASA)
• ESOC — European Space Operations Center
• MDI — Michelson Doppler Imager
• CASS — Center for Advanced Space Studies
• POS — Point of Service Plan
• MHD — Magnetohydrodynamic
• AFSCN — Air Force Space Command network
• FIRSSE — Far Infrared Sky Survey Experiment
• SPVW — Spaceview
• RMS — root mean square (preferred over "RMS")
• CG — Center of Gravity (DXS)
• DUROO — Durham Observatory Observations
• AREPS — Annual Review of Earth and Planetary Sciences
• NASA — National Aeronautics and Space Administration (US)
• ZAHB — Zero-Age Horizontal Branch
• CDT — Connaissance Des Temps
• ITU — Infrared Telescope Unit
• CIRCE — Confusion-limited Infrared Cosmology Explorer
• USGS — United States Geological Survey (DOI)
• COWRO — Contributions from the Wroclaw Astronomical Observatory
• CQGRS — Classical and Quantum Gravity Supplement
• KB — Kilobyte: One thousand and twenty-four bytes kbps kilo bit per second
• ASTHE — Astronomical Herald
• MSX — Midcourse Space Experiment
• JD — Julian Date
• ADSPR — Advances in Space Research

• WET — Whole Earth Telescope
• STICA — Space Technology Industrial and Commercial Applications
• FAT — File Allocation Table
• DIN — Deutsches Institut für Normung.
• CON — Certificate Of Need
• JRASC — Journal of the Royal Astronomical Society of Canada
• GCP — Good Clinical Practice
• SEOS — Synchronous Earth Observation Satellite
• SIM — Space Interferometry Mission
• UL — Underwriters Laboratory
• EDT — Eastern Daylight Time
• LF — Luminosity Function
• VMS — Virtual Memory System
• CRB — Change Review Board
• OSHA — Occupational Safety and Health Act (1970)
• ASPRV — Astrophysics and Space Physics Reviews
• OSSA — Office of Space Sciences and Applications
• BAO — Beijing Astronomical Observatory
• AIRCO — Air et Cosmos
• PROM — Programmable Read-Only Memory
• Z — Zenith
• CFA — Harvard-Smithsonian Center for Astrophysics, USA
• COCAM — Contributions from the Cambridge Observatory England
• SPART — Space Research and Technology
• MMI — Man-Machine Interface
• TAC — Telescope Allocation Committee
• ORIG — Origin
• CCD — Charge Coupled Device - a device for the movement of electrical charge.
• LSR — Local Standard of Rest
• NSSDC — National Space Science Data Center (Greenbelt, MD)
• ADEPS — Advances in Earth and Planetary Sciences
• EC — European Community
• PASAU — Proceedings of the Astronomical Society of Australia
• APH — Astroparticle Physics
• RAZEL — Range, Azimuth and Elevation
• SRB — Solid Rocket Boosters
• NASO — North American Space Operations
• TEM — Transverse Electromagnetic
• GPC — General Purpose Computer
• ADCBU — Astronomical Data Center Bulletin
• GHZ — Gigahertz
• COLPL — Communications of the Lunar and Planetary Laboratory
• MHW — Ministry of Health and Welfare
• NRL — Naval Research Laboratory
• MMA — Minnesota Medical Association
• AEXPR — Astronomy Express
• WAIS — Wide Area Information Server
• WMO — World Meteorological Organization (ICSU)
• ORROE — Occasional Reports of the Royal Observatory, Edinburgh
• SAR — synthetic aperture radar (satellite)

• DYERE — Dyer Observatory Reprints
• LAD-C — Large Area Debris Collector
• LEGRI — Low Energy Gamma-Ray Imager
• UPS — Uninterruptible Power Supply
• BTOK — Bulletin of the Tokyo Astronomical Observatory
• SPP — Solar Physics Payload
• PCA — Proportional Counter Array
• RFNA — Red Fuming Nitric Acid
• CHARA — Center for High Angular Resolution Astronomy
• LASCO — Large Angle Spectrometric Coronograph
• PN — Planetary Nebula
• IMBH — Intermediate-Mass Black Hole
• BAA — British Astronomical Association
• MITI — Ministry of International Trade & Industry (Japan)
• AE — Adverse Event
• MMT — Multiple Mirror Telescope
• FS — Far Side
• FDR — Final Design Review
• ICE — International Cometary Explorer
• JAMA — Journal of the American Medical Association
• JASS — Journal of Astronomy and Space Sciences
• XRD — X-Ray Diffraction
• ADS — Astrophysics Data Service
• SPRBU — Space Research Bulgaria
• ALPOJ — Association of Lunar and Planetary Observers Journal
• TCPA — Time for Closest Point of Approach
• MSFN — Manned Space Flight Network
• NAFTA — North American Free Trade Agreement
• SLC — Space Launch Complex
• ARISTOTELES — Applications and Research Involving Space Technologies Observing the Earth's Field from Low Earth Orbiting Satellite
• AMS — American Meteor Society
• SAPS — Sub Auroral Polarization Streams
• DEACO — Dearborn Observatory Contributions
• RALPH — Reduction and Acquisition of Lunar Pulse Heights
• SPMAR — Space Markets
• CV — Cataclysmic Variable
• HIRA — Health Industry Representatives Association
• LBNL — Lawrence Berkeley National Laboratory (US)
• GOES — Geostationary Operational Environmental Satellite
• ONRAS — Occasional Notes of the Royal Astronomical Society
• EAA — Encyclopedia of Astronomy and Astrophysics
• ANMN — Antarctic Meteorite Newsletter
• SR — Special Relativity
• VAI — Voluntary Action Indicated (Food & Drug Administration postaudit inspection classification)
• ATDRS — Advanced Tracking and Data Relay Satellite
• SSBUV — shuttle solar backscatter ultraviolet (radiometer)
• LOX — Liquid Oxygen
• MVI — Microgravity Vestibular Investigation
• OVS — Observation of Variable Stars
• DUDOR — Dudley Observatory Reports

• PROE — Publications of the Royal Observatory of Edinburgh
• HP — Hewlett Packard's
• LLO — Low Lunar Orbit
• AAT — Anglo Australian Telescope
• CQGRA — Classical and Quantum Gravity
• PHA — Physics And Astronomy
• AOA — Abort Once Around (shuttle Abort Plan)
• MELOO — Melbourne Observatory Observations
• AMPS — Atmosphere, Magnetosphere & Plasmas in Space
• BLOB — Binary Large Object
• NMI — Nautical Mile
• ASA — Astronomical Society Of The Atlantic
• ASM — American Society for Microbiology
• CFF — Columbus Free Flyer
• JBAS — Journal of the British Astronomical Society
• PCARS — Publication of COMU Astrophysics Research Center
• PAM — Payload Assist Module
• ANDUD — Annals of the Dudley Observatory
• ISU — International Space University
• ESOSP — European Southern Observatory Scientific Preprints
• M&R — Maintenance and Refurbishment
• ASQ — Alpha System Qualification
• PDR — Photo Dissociation Region
• HHS — Health and Human Services Department
• ASTL — Astronomy Letters
• COSRE — Cosmic Research
• ANLUN — Annals of the Observatory of Lund
• FCPH — Fundamentals of Cosmic Physics
• EIA — Extended Interaction Amplifier
• OTV — Orbital Transfer Vehicle
• MECO — Magnetospheric Eternally Collapsing Object
• GHTF — Global Harmonization Task Force
• PA — Popular Astronomy
• WGPSN — Working Group for Planetary System Nomenclature
• BPSK — binary phase shift keying
• JDSO — Journal of Double Star Observations
• CEA — Center for EUV Astrophysics
• APOD — Astronomy Picture of the Day
• ANHAR — Annals of Harvard College Observatory
• JAHH — Journal of Astronomical History and Heritage
• RQQ — Radio Quiet Quasar
• COVVO — Contributions of the Van Vleck Observatory
• Z — Zulu (Greenwich mean time)
• BKOAS — Bulletin of Korean Astronomical Society
• NDA — New Drug Application
• BOD — Board of Directors (Budget)
• IPAC — Infrared Processing and Analysis Center
• BASI — Bulletin of the Astronomical Society of India
• ETLA — Extended Three Letter Acronym
• VLSI — Very-Large-Scale Integration

• PRCO — Publications of the Riverview College Observatory
• ACRV — Assured Crew Return Vehicle
• NIZRE — Nizamiah Observatory Reprints
• F — Degrees Fahrenheit
• COMAP — Comments on Astrophysics
• PVO — Pioneer Venus Orbiter
• VO — Virtual Observatory
• POMIC — Publications of Michigan Observatory
• CGRO — Compton Gamma-Ray Observatory
• WD — White Dwarf
• PLICO — Publications of Lick Observatory
• ND — Neutral Density
• LOD — Length of Day
• SFR — Star Formation Rate
• ESABU — European Space Agency Bulletin
• MM — Memory Module
• KM — Kilometer (1,000 meters)
• CIBAA — Circular of the British Astronomical Association
• PMUNO — Publications of the Munich Observatory
• CMA — Chemical Manufacturers Association
• CDC — Centers for Disease Control
• AGU — American Geophysical Union
• CRPL — Cosmic Ray Physics Laboratory
• PDREO — Publications of the Dresden Observatory
• MNRAS — Monthly Notices of the Royal Astronomical Society
• CNB — Cosmic Neutrino Background
• VBR — Variable Bit Rate (ATM)
• HTH — Hope This Helps. Email abbreviation when replying to requests. Potentially counter-productive if the recipient doesn't understand what it means...
• ANLOW — Annals of the Lowell Observatory
• VAB — Vertical Assembly Building
• JBAA — Journal of the British Astronomical Association
• EBS — Electron Bombarded Silicon
• SDI — Strategic Defense Initiative
• IDL — Interactive Data Language
• OPM — Outer Planet Mission
• TMT — Thirty-Meter Telescope
• GLOMR — Global Low-Orbiting Message Relay
• ESOAR — European Southern Observatory Annual Reports
• ESIS — ESA Space Information Systems
• COROT — Convection Rotation and Planetary Transits
• TOMS — Total Ozone Mapping Spectrometer (satellite Instrument)
• VSOP — VLBI Space Observatory Program
• ESTP — European Space Technology Platform
• PHS — Public Health Service (U.S.)
• DSSN — Delta Scuti Star Newsletter
• LM&SS — Lunar Mapping and Scientific Survey
• MWOAR — Mount Wilson Observatory Annual Report
• COBOS — Contributions from the Bosscha Observervatory
• MCC — Mission Control Center (JSC)
• RCS — Radar Cross Section

• COROE — Communications from the Royal Observatory Edinburgh
• IUEEN — IUE ESA Newsletter
• MCD — Minimum Cost Design
• PASJ — Publications of the Astronomical Society of Japan
• BBXRT — Broadband XRay Telescope
• PCS — Pointing Control System
• IQSY — International Quiet Sun Year
• ISO 14155 — Current Widely Accepted Standard
• COLIC — Contributions of Lick Observatory
• CHA&A — Chinese Astronomy and Astrophysics
• PASA — Publications of the Astronomical Society of Australia
• ANCAP — Annals of the Cape Observatory
• COBRN — Contributions of the Public Observatory and Planetarium in Brno
• LAN — Local Apparent Noon
• SNAP — Supernova / Acceleration Probe
• OAP — Odessa Astronomical Publications
• ADVAMED — Advanced Medical Technology Association
• TTA — Time to Apogee
• TV — Thermal Vacuum
• MASER — microwave amplification by stimulated emission of radiation
• GRC — Glenn Research Center
• AREP — Astronomy Reports
• ASMT — American Society for Medical Technology
• STO — Solar Terrestrial Observatory
• COARM — Contributions from the Armagh Observatory
• K — Kilogram
• CPAF — Cost Plus Award Fee (Type of Contract)
• LASS — large-amplitude space simulator
• LAT — Large Area Telescope
• ASSU — Annual Scientific Supplement to Urania
• JAD — Journal of Astronomical Data
• DDCMP — Digital Data Communications Message Protocol
• SST — Spectroscopic Survey Telescope
• G — Gravity
• ANDEA — Annales of the Dearborn Observatory
• PAAS — Publications of the American Astronomical Society
• NABR — National Association for Biomedical Research
• ESOSR — European Southern Observatory Scientific Report
• SOT — Solar Optical Telescope
• IDTF — Independent Diagnostic Testing Facility
• BSI — British Standards Institution
• BAAS — Bulletin of the American Astronomical Society
• CME — Coronal Mass Ejection (usually Sun)
• BCRAO — Bulletin Crimean Astrophysical Observatory
• CL — Command Language
• JIMO — Journal of the International Meteor Organization
• MDD — Medical Device Directive
• AUJPA — Australian Journal of Physics Astrophysical Supplement
• JBRE — Jodrell Bank Reprints
• AACC — American Association for Clinical Chemists

• CPI — characters per inch
• COSKA — Contributions of the Astronomical Observatory Skalnate Pleso
• NOAO — National Optical Astronomy Observatories (Tucson, AZ)
• IRAJ — Irish Astronomical Journal
• E&S — Earth and Space
• CDS — Coronal Diagnostic Spectrometer
• LR — Long Radius
• NCI — National Cancer Institute, USA
• SIDC — Sunspot Index Data Center
• RAE — Radio Astronomy Explorer
• ESPI — European Space Policy Institute
• PMANO — Publications of the Manila Observatory
• MDS — Medium Deep Survey
• CIUO — Circular of the Union Observatory Johannesburg
• AAOPR — Anglo-Australian Observatory Epping Preprint
• PNAOJ — Publications of the National Astronomical Observatory of Japan
• EXA — Experimental Astronomy
• IRAJS — Irish Astronomical Journal Supplement
• BPI — bits per inch
• AMIA — The American Medical Informatics Association
• LH — Liquid Hydrogen
• COASP — Comments on Astrophysics and Space Physics
• PLAST — Planetary Astronomy
• NEODYS — Near Earth Objects Dynamic Site
• EPS — Encapsulated Postscript
• OBC — Onboard Computer
• AZ — Azimuth
• APHA — American Pharmaceutical Association
• CODDO — Communications from the David Dunlap Observatory
• ARCHS — Archaeoastronomy Supplement
• MRSR — Mars Rover Sample Return
• FAHS — Federation of American Health Systems
• JAAME — Japanese Association for the Advancement of Medical Equipment
• PSC — Point Source Catalog
• OSTA — Office of Space and Terrestrial Applications (US NASA; now OAST)
• PPN — Proto-Planetary Nebula
• JAXA — Japan Aerospace Exploration System
• FWHM — Full Width at Half Maximum
• LBLRR — LBL Research Review
• A&AS — Astronomy and Astrophysics Supplement Series
• JCAP — Journal of Cosmology and Astro-Particle Physics
• COSSE — Cosmic Search Summer
• MERIS — Medium Resolution Imaging Spectrometer
• UVS — Ultraviolet Spectrometer
• DOY — Day of Year
• ANSAO — Annals of the Astrophysical Observatory of the Smithsonian Institution
• MS — Master Schedule
• JASAC — Japan Astronomical Study Association Circulars
• EUV — Extreme Ultraviolet Vertical
• IFA — Institute for Astronomy

• ELT — Extremely Large Telescope
• GPE — Gravitational Potential Energy
• SM — Secondary Mirror
• EEXSC — Earth and Extraterrestrial Sciences
• NASPY — North American Society of Electro Physiology and Pacing
• TPF — Terrestrial Planet Finder
• NEEDS — NASA end-to-end data system
• SPIRE — Spectral Infrared Rocket Experiment
• VDU — Video Display Unit
• WHT — William Herschel Telescope
• IGM — Intergalactic Medium
• IRSA — Infrared Science Archive
• CATS — Cheap Access to Space
• CBER — Center for Biologics Evaluation and Research
• ISSRT — Israel Space Research and Technology Information Bulletin
• MEV — Mars Excursion Vehicle
• EVA — Extra-Vehicular Activity
• OG — Original Gravity
• COPRE — Copenhagen University Observatory Reprints
• LICOB — Lick Observatory Bulletin
• JHAS — Journal for the History of Astronomy Supplement
• CAMRE — Cambridge Observatories Reprints
• PAMELA — Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics
• JASV — Journal of the Astronomical Society of Victoria Melbourne
• ARA&A — Annual Review of Astronomy and Astrophysics
• NSTL — National Space Technology Laboratories (NASA)
• NRAOR — National Radio Astronomy Observatory Reprints
• SDIO — Strategic Defense Initiative Organization
• PGLO — Publications of the Goethe Link Observatory
• LHEA — Laboratory for High Energy Astrophysics
• NCC — Network Control Center (GSFC)
• JAC — Joint Astronomy Centre
• MELAR — Melbourne Observatory Annual Report
• MTC — Man-Tended Capability
• CYSF — Cape York Space Facility
• IRAS — Infrared Astronomy Satellite
• M&P — Materials and Processes
• AR — Active Region
• NERVA — Nuclear Engine for Rocket Vehicle Application
• PERCO — Perkins Observatory Contributions
• ODF — Orbit Determination Facility
• JHIT — Joint Healthcare Information Technology Alliance
• JKAS — Journal of Korean Astronomical Society
• OEJV — Open European Journal on Variable Stars
• S/W — Software
• WR — Western Range
• USRA — Universities Space Research Association
• SSRMS — Space Station Remote Manipulator System
• JBAN — Jodrell Bank Annals
• PBEIO — Publications of the Beijing Astronomical Observatory

• LBT — Large Binocular Telescope
• K — Kelvin (absolute temperature scale)
• HRI — High Resolution Imager
• UPPAN — Uppsala Astronomical Observatory Annals
• MASSMEDIC — Massachusetts Medical Device Industry Council
• PCINO — Publications of the Cincinnati Observatory
• PC — Planetary Camera
• UW — University of Wisconsin
• DSSC — Deep Space Station Complex
• FSK — Frequency Shift Keying
• PDDO — Publications of the David Dunlap Observatory
• LHA — Local Hour Angle
• BIO — Biotechnology Industry Organization
• 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
• SSI — Solid-State Imager
• CU — Calibration Unit
• OARE — Orbital Acceleration Research Experiment
• PHA — Potentially Hazardous Asteroid
• IAPM — International Association of Medical Prosthesis Manufacturers
• JAPA — Journal of Astrophysics and Astronomy
• TIFF — Tag Image File Format
• ISBRV — International Space Business Review
• ISY — International Space Year (1992)
• HST — Hubble Space Telescope
• MMKMO — Memoirs Of The Kakioka Magnetic Observatory
• COPER — Contributions of Perkins Observatory
• JHA — Journal for the History of Astronomy
• AAVSO — American Association of Variable Star Observers
• SIMCAT — simulate observations using space catalog
• IDT — Investigation Definition Team
• AFGWC — Air Force Global Weather Central (U.S.)
• TPS — Thermal Protection System
• RSO — Resident Space Object
• ARKOD — Annual Report of the Kodaikanal Observatory
• OMS — orbital maneuvering system
• CADC — Canadian Astronomy Data Centre
• LRO — Lunar Reconnaissance Orbiter
• SO — Space Operations
• BBT — Big Bang Theory
• POMIN — Publications of the Astronomical Observatory University of Minnesota
• IU — Interface Unit
• SRD — Software Requirements Document
• DOH — Department of Health (various countries)
• OAO — Orbital Astronomical Observatory
• SHA — Sidereal Hour Angle
• ASCRS — American Society of Cataract and Refractive Surgery's
• ISEE — International Sun-Earth Explorer
• IUENN — IUE NASA Newsletter
• NUSTAR — Nuclear Spectroscopic Telescope Array
• USNO — United States Naval Observatory

• JBIS — Journal of the British Interplanetary Society
• DAO — Dominion Astrophysical Observatory (Victoria, BC, Canada)
• SETI — Search for Extraterrestrial Intelligence
• CHPA — Consumer Healthcare Products Association
• NEWAR — New Astronomy Review
• CIT — California Institute of Technology (Pasadena, CA)
• FRC — Flight Research Center
• CRARE — Cracow Observatory Reprints
• LAC — Lockheed Aircraft Corporation
• AVSOM — American Association of Variable Stars Observers Monographs
• ASAIO — American Society for Artificial Internal Organs
• IPC — Interprocess Communication
• FDLI — Food and Drug Law Institute
• TDRSS — Tracking and Data Relay Satellite System
• SPICE — Survey Probe Infrared Celestial Experiment
• ECS — Environmental Control System (Subsystem)
• SPIRIT — Spatial Infrared Telescope
• ID — IDentifier
• SEF — Space Environmental Facility
• LRSP — Living Reviews in Solar Physics
• NCAR — National Center for Atmospheric Research (US)
• EGG — Evaporating Gaseous Globule
• PMC — Permanently Manned Capability (of Space Station)
• ESO — European Southern Observatory
• PLANEMO — Planetary Mass Object
• ET — External Tank
• EGRET — Energetic Gamma Ray Explorer Telescope
• AUASS — Arab Union for Astronomy and Space Sciences
• APJL — Astrophysical Journal Letters
• S/N — Signal-to-Noise ratio
• ANS — Astro News Service
• ICCD — Intensified Charge-Coupled Device
• SPPOL — Space Policy
• E — Earth
• DSP — Defense Support Program
• SSPF — Space Station Processing Facility
• SRAG — Space Radiation Analysis Group
• OASH — Office of the Assistant Secretary for Health
• RSNA — The Radiological Society of North America, Inc.
• ISN — International Supernovae Network
• CIRRIS — Cryogenic Infrared Radiance Instrument for Shuttle
• PDUFA — Prescription Drug User Fee Act (1992, U.S.)
• MOTIF — Maui Optical Tracking and Identification Facility
• PST — Personal Solar Telescope
• NEOIC — Near Earth Object Information Center
• MAFI — Medical Alert Foundation International
• ADEC — Astrophysics Data Centers Executive Council
• OWL — Overwhelmingly Large Telescope
• ANTOK — Annals of the Tokyo Astronomical Observatory
• STACC — Standard Telemetry And Communications Component

• AU — Alternate Universe
• TAC — Time Allocation Committee
• SANS — Stellar Autonomous Navigation System
• GOES — Geostationary Orbiting Environmental Satellite
• HCIS — Health Care Information System
• PSPRO — Publications of the Sproul Observatory
• SO/SI — space operations and scientific investigation
• RGB — Red Giant Branch
• ASC — Agence Spatiale Canadienne
• BHB — Blue Horizontal Branch
• MEPAG — Mars Exploration Program Analysis Group
• MSSS — Maui Space Surveillance Site
• STOMS — Space Telescope Observatory Management System
• JRASN — Journal of the Royal Astronomical Society of New Zealand
• HIAA — Health Insurance Association of America
• S/C — Spacecraft
• SEDS — Students for the Exploration and Development of Space
• VDS — Vereinigung der Sternfreunde
• ONR — Office of Naval Research (U.S.)
• M — Messier
• VTVL — Vertical Takeoff Vertical Landing
• AAONW — Anglo-Australian Observatory Epping Newsletter
• MIAA — Medical Industry Association of Australia
• TOKRE — Tokyo Astronomical Observatory Reprints
• HIS — Health Information Systems
• SPOT — Satellite Pour l'Observation de la Terre (France)
• PVVO — Publications of the Van Vleck Observatory
• RSU — Rate Sensor Unit
• CMS — Correctional Medical Services
• ESAST — European Space Agency Scientific Technical Review
• DPS — Division for Planetary Sciences
• DG — Data Group
• NCSC — National Council of Senior Citizens
• CSA — Canadian Standards Association (like UL)
• PSK — Phase Shift Key
• ATM — Apollo Telescope Mount (on Skylab)
• MST — Mean Solar Time
• CLMA — Clinical Laboratory Management Association
• SSS — Spinning Sun Sensor
• TOY — Time of Year
• DMF — Data Management Facility
• SDO — Scattered Disk Object
• MSSSO — Mount Stromlo and Siding Spring Observatories
• CNSA — China National Space Administration
• OPAG — Outer Planets Assessment Group
• CCR — Configuration Change Request
• ALAMO — Automated Lunar and Meteor Observatory
• NEAR — Near-Earth Asteroid Rendezvous
• GG — Gravity Gradient
• STSCI — Space Telescope Science Institute

• ROE — Royal Observatory, Edinburgh
• D — Directive
• WIMP — Weakly Interacting Massive Particle
• LAPSS — Large-Area Pulse Solar Simulator
• OHP — Observatoire de Haute-Provence
• CSBN — Committee for Small-Body Nomenclature
• SERC — Science and Engineering Research Council
• ALPO — Association of Lunar and Planetary Observers
• ASSA — Astronomical Society of South Africa
• PROPAC — Prospective Payment Assessment Commission
• AO — announcement of opportunity
• SCP — Supernova Cosmology Project
• NAHIT — National Alliance for Health Information Technology
• MITTS — Mobile Igor Tracking Telescope System
• MMH — Monomethyl Hydrazine
• LPL — Lunar and Planetary Laboratory
• DDORE — David Dunlap Observatory Richmond Hill Reprints
• USPHS — United States Public Health Service
• HIBCC — Health Industry Business Communications Council
• KPNO — Kitt Peak National Observatory (Tucson, AZ)
• CO — Contracting Officer
• SBNC — Small Bodies Names Committee
• EOS — Earth Observing System (U.S.)
• FOC — Faint Object Camera
• HFMA — Healthcare Financial Management Association
• RECONS — Research Consortium on Nearby Stars
• AVSOQ — American Association of Variable Stars Observers Quarterly Reports
• ARC — Astrophysical Research Consortium
• BD — Bonner Durchmusterung
• MPS — Mission Planning System
• CARA — Center for Astrophysical Research in Antarctica
• IPEM — Institute of Physics and Engineering in Medicine
• ANOLL — Annals of the Private Observatory of Lucien Libert
• ATLAS — ACTIVITIES Atmospheric Laboratory for Applications and Science
• SZA — Solar Zenith Angle
• IOTA — International Occultation Timing Association
• RNAOJ — Report of the National Astronomical Observatory of Japan
• HRSA — U.S. Health Resources and Services Administration
• PMT — Photo Multiplier Tube
• DOAMS — distant-object attitude-measuring system
• ADC — Astronomical Data Center
• SEM — space environment monitoring
• VVORE — Van Vleck Observatory Reprints
• PEPI — Physics of the Earth and Planetary Interiors
• POSS — Palomar Observatory Sky Survey
• PI — Principle Investigator
• HOTOL — Horizontal Takeoff and Landing Launcher
• HIMSS — Healthcare Information and Management Systems Society
• CCAS — Cape Canaveral Air Station
• MOPH — Ministry of Public Health

• AAO — Anglo-Australian Observatory
• BIS — British Interplanetary Society
• VSOLJ — Variable Star Observers League in Japan
• AGILE — Astro-rivelatore Gamma a Immagini Leggero
• NAOJ — National Astronomical Observatory of Japan
• LAIRT — Large-Aperture Infrared Telescope
• LAMMR — large-antenna multichannel microwave radiometer
• INDA — Investigational New Drug Application
• SG — Shattered Galaxy (game)
• QSO — Quasar|Quasi-Stellar Object
• CEC — Commission of the European Communities ;
• KCAO — Kumamoto Civil Astronomical Observatory
• AASPP — Astrononomy and Astrophysics Series
• CBR — Cosmic Background Radiation
• FIR — Far Infrared
• MOS — Metal Oxide Semiconductor (FET Devices)
• DCR — Document Change Request
• NRAO — National Radio Astronomy Observatory (Greenbank, WV)
• RASC — Royal Astronomical Society of Canada
• STATS — star tracker alignment test set
• SAC — Saguaro Astronomy Club
• CCR — Cost-Charge Ratio
• SAC — Solar Array Carrier
• MTPPI — Medical Technology and Practice Patterns Institute
• RA — Regulatory Affairs
• ETR — Eastern Test Range (ESME Preferred)
• CFC — Chloroflourocarbon
• APC — Ambulatory Payment Class
• FTL — Faster Than Light
• ATC — Absolute Time Command
• SEB — Systems Engineering Branch
• NIR — Near Infrared
• DSMA — Division of Small Manufacturers Assistance
• SIRTF — Shuttle InfraRed Telescope Facility
• AMANDA — Antarctic Muon And Neutrino Detector Array
• EFCS — Earth-fixed coordinate system
• PLR — Planetary Report
• OHTA — Office of Health Technology Assessment
• ECRI — Emergency Care Research Institute
• UARS — Upper Atmosphere Research Satellite (NASA)
• NAMN — North American Meteor Network
• CFIT — Controlled Flight into Terrain
• BAVSO — Bulletin of the American Association of Variable Stars Observers
• MEDEC — Medical Devices Canada
• ICH — International Conference of Harmonization
• EUDRA — European Drug Regulatory Authorities Network
• MIL-STD — Military Standard
• SUNY — State Universityrsity of New York
• UGC — Uppsala General Catalog
• JCAHO — Joint Committee on the Accreditation of Healthcare Organizations

• EPIC — Earth Polychromatic Imaging Camera
• CEV — Crew Exploration Vehicle
• AVSOA — American Association of Variable Stars Observers Abstracts
• DEM — Differential Emission Measure
• JCCT — Joint Commission on Commerce and Trade (US-China)
• SI — Science Instrument
• HRMS — High Resolution Microwave Survey (SETI, Project Phoenix)
• MJD — Modified Julian Date
• ICD-9-CM — International Classification of Diseases, 9th Edition
• XRT — X-Ray Telescope
• HIDA — Health Industry Distributors Association
• ISTAHC — International Society of Technology Assessment in Health Care
• WEBT — Whole Earth Blazar Telescope
• TEA — Torque Equilibrium Attitude
• TIROS — Television InfraRed Observation Satellite (POES)
• DWE — Doppler Wind Experiment
• ADU — Astronomical Distance Unit
• TCE — Thermal Control Electronics
• ADASS — Astronomical Data Analysis Software and Systems
• LLAGN — Low-Luminosity Active Galactic Nucleus
• CEAB — Central European Astrophysical Bulletin
• EVN — European VLBI Network
• SPED — Space Education
• CARA — California Association for Research in Astronomy
• ADSAC — Advanced Series in Astrophysics and Cosmology
• POVRO — Publications of the Owens Valley Observatory
• DCT — Discrete Cosine Transformer
• ORA — FDA's Office of Regulatory Affairs
• ADIS — Astrophysics Data and Information Services
• TIE — Telescopes in Education
• CD — Cordoba Durchmusterung
• CENELEC — European Committee for Electromechanical Standardisation
• GLP — Good Laboratory Practice
• RGO — Royal Greenwich Observatory
• UDL — Unique Data Log
• VMS — Vertical Motion Simulator
• ROUS — Rodents Of Unusual Size
• SDSS — Sloan Digital Sky Survey
• ODB — Operations Data Base
• CAROB — Carter Observatory Wellington New Zealand Astronomical Bulletins
• TUV — Technische Uberwachungs-Vereine
• MMAAR — Maria Mitchell Association Annual Report
• PDA — Parenteral Drug Association
• ISTEC — International Small Telescope Cooperative
• NRO — U.S. National Reconnaissance Office
• LS/ST — Light Shield/Star Tracker
• SAAO — South African Astronomical Observatory
• APPLE — Ariane Passenger Payload Experiment
• POHEL — Publications of the Astronomical Observatory Helsinki
• HZ — Habitable Zone

• MDDI — Medical Device and Diagnostics Industry
• CBI — Confederation of British Industries
• IES — Institute of Environmental Sciences
• FDAMA — FDA Modernization Act of 1997
• HGA — High Gain Antennae
• BANS — Bulletin of the Astronomical Institutes of the Netherlands, Supplement Series
• KODOB — Kodaikanal Observatory Bulletins
• IDA — International Dark-Sky Association, Inc.
• LGM — Little Green Men
• DSNPR — Deep Space Network Progress Report
• LPO — La Palma Observatory
• CD-ROM — compact disc-read only memory
• SERAJ — Serbian Astronomical Journal
• EGRET — Energetic Gamma Ray Experiment Telescope
• QSR — Quality System Regulation
• CHI — California Healthcare Institute
• DH — Data Handling
• RGOO — Royal Greenwich Observatory Observations
• PPRC — Physician Payment Review Commission
• MTSRE — Mount Stromlo Observatory Reprints
• ATEL — Astronomer's Telegram
• SPAC — State Pharmaceutical Administration of China
• UNOOSA — United Nations Office for Outer Space Affairs
• HTML — Hyptertext Markup Language
• QBO — Quasi-biennial Oscillation (atm.)
• APINV — Astrophysical Investigations
• PDR — Physician’s Desk Reference
• MPO — Mercury Planetary Orbiter
• IUEDAC — IUE satellite Data Analysis Center
• USNOC — United States Naval Observatory Circulars
• CTB — Cargo Transfer Bag
• PA — Position Angle
• IMO — International Meteor Organization
• ASH — American Society of Hematology's
• SGF — SpaceGuard Foundation
• NIGMS — National Institute Of General Medical Sciences (NIH)
• INTEGRAL — International Gamma-Ray Astrophysics Laboratory
• UPPOR — Uppsala Astronomical Observatory Reports
• MPEC — Minor Planet Electronic Circular
• WRORE — Wroclaw Astronomical Observatory Reprints
• BATSE — Burst and Transient Source Experiment
• DRG — Diagnosis-Related Groups
• HPB — Health Protection Board (Canada)
• SST — Space Surveillance and Tracking
• BEV — Billion Electron Volts
• PSLV — Polar Satellite Launch Vehicle (Indian Space Research Organization; India)
• CSG — Council of State Governments
• WAXS — Wide Angle X-ray Scattering
• APL&C — Astrophysical Letters Communications
• HSQB — Health Standard and Quality Bureau

• PLAWO — Publications of Laws Observatory
• AIPS — Astronomical Image Processing System
• TR — Tape Recorder
• LPI — Lunar and Planetary Institute
• NHIB — National Health Insurance Bureau (Taiwan)
• NAS — Norsk Astronomisk Selskap
• MIP — Moon Impact Probe
• AGPS — Assisted Global Positioning System
• GRO — Gamma Ray Observatory (NASA)
• DIN — Deutsches Institut fur Normung
• TEP — Transits of Extrasolar Planets
• LLC — Limited Liability Partnership
• FIPS — Fast Imaging Plasma Spectrometer
• NLN — National League for Nursing
• JETRO — Japan External Trade Organization
• IOLM — International Organization of Legal Metrology
• GHRS — Goddard High Resolution Spectrograph
• QSIT — Quality System Inspection Technique
• HIB — Health Insurance Bureau (Japan)
• SNR — Super Nova Remnant
• MMRAS — Memoirs of the Royal Astronomical Society
• VPF — Vertical Processing Facility
• VAB — Vehicle Assembly Building
• SYDOP — Sydney Observatory Papers
• HUT — Hopkins Ultraviolet Telescope
• SAS — Space Adaptation Syndrome
• CORAD — Communications from the Radcliffe Observatory Pretoria South Africa
• ASCP — American Society for Clinical Pharmacology and Therapeutics
• JFMDA — Japan Federation of Medical Device Associations
• TIMED — Thermosphere Ionosphere Mesosphere Energetics and Dynamics
• SMS — Science Mission Specification
• ECCLS — European Committee on Clinical Laboratory Standards
• SSP — Subsolar Point
• PFAO — Publications of the Flower Astronomical Observatory
• COWAT — Contributions of the University of Waterloo Observatory
• IMDA — Independent Medical Distributors Association
• PBRN — Publications of the Astronomical Institute of the University of Borneo
• NAMES — National Association of Medical Equipment Services
• NESSI — Near Earth Space Surveillance Initiative
• PPQA — Pre-Product Quality Assurance
• CPFF — Cost Plus Fixed-Fee
• ANSHO — Shanghai Observatory Annals
• RAD — Radiant
• MEI — Medical Economic Index
• IRBS — Infrared Background Sensor
• VBO — Vainu Bappu Observatory
• FQR — Flight Qualification Review
• TOKAB — Tokyo Astronomical Bulletin
• SVPCS — Springer Verlag Springer Series on Physics Chemistry Space
• SUSIM — Solar Ultraviolet Spectral Irradiance Monitor

• EFPIA — European Federation of Pharmaceutical Industries and Associations
• LSF — Line Spread Function
• RAA — Relative Azimuth Angle
• MOSS — Market-Oriented Sector Selective
• MEDGV — Germany's Medical Equipment Safety Law
• TEI — The Education Initiative
• TMC — Taurus Molecular Cloud
• CAPMI — Royal Observatory Cape Mimeogram
• IPNPR — Interplanetary Network Progress Report
• PKAS — Publication of the Korean Astronomical Society
• MMO — Mercury Magnetospheric Orbiter
• DEED — Minnesota Department of Employment and Economic Development
• ISM — Interstellar Medium
• ESOB — European Southern Observatory Bulletin
• ARBEI — Astrophysics Reports Publications of the Beijing Astronomical Observatory
• AIMBE — American Insitute for Medical and Biological Engineering
• PPMTO — Publications of the Purple Mountain Observatory
• CEO — Corporate Europe Observatory
• LEND — Lunar Exploration Neutron Detector
• SOLSTICE — Solar Stellar Irradiance Comparison Experiment
• DADS — Data Archive and Distribution System
• SL — Comet Shoemaker-Levy
• PYERO — Publications of the Yerkes Observatory
• AEDRV — Astronomy Education Review
• PRO — Professional Review Organization
• MMASI — Memoirs of the Astronomical Society of India
• LNSP — Lecture Notes and Supplements in Physics
• VHT — Very High Temperature
• MDMA — Medical Device Manufacturers Association
• AC — Astrographic Catalogue
• MV — Apparent Visual Magnitude
• AAAD — Amateur Astronomers Association Delhi
• UHMW — Ultra High Molecular Weight
• SF — Square Foot
• RAPS — Regulatory Affairs Professional Society
• JET-X — Joint European Telescope for X-ray astronomy
• XUV — Extreme Ultraviolet
• LAWOB — Laws Observatory Bulletin
• WR — Wolf-Rayet Star
• ASIM — American Society of International Medicine
• PDAO — Publications of the Dominion Astrophysical Observatory
• PRAST — Practical Astronomy
• TTP — Time to Perigee
• APL — Astrophysical Letters
• PAIB — Publications of the Astronomy Institute of Bonn
• MOTIE — Ministry of Trade, Industry, and Energy (Korea)
• PAB — Pharmaceutical Affairs Bureau (Japan)
• SPO — Sacramento Peak Observatory
• VTHL — Vertical Takeoff Horizontal Landing
• PISTO — Publications of the Istanbul Observatory

• PVASO — Publications of the Vassar College Observatory
• QE — Quantum Efficiency
• VCS — Vernier Control System
• ASP — Astronomical Society of the Pacific
• ANLL — Annals of the Observatory of Lucien Libert
• HDIF — Health Care Data Interchange Format
• PERI — Pharmaceutical Education & Research Institute
• ASTRA — Astrophysics and Space Sciences Transactions
• VLA — Very Large Array
• KODRE — Kodaikanal Observatory Reprints
• DNA — Digital Network Architecture
• IGY — International Geophysical Year (1 July 1957 - 31 December 1958)
• GHA — Greenwich Hour Angle
• OMC — Orion Molecular Cloud
• COLON — Communications of the University of London Observatory
• SID — Sudden Ionospheric Disturbance
• PISCO — Parallel Imager for Southern Cosmological Observations
• PCOOO — Publications of the Cook Observatory
• CIAO — Chandra Interactive Analysis of Observations
• PASPS — Publications of the Astronomical Society of the Pacific Supplement
• CRISTA — Cryogenic Infrared Spectrometer Telescope For Atmosphere
• AP&SS — Astrophysics and Space Science
• IDT — Instrument Development Team
• PT — Pass-Through
• VLBI — Very Long Baseline Interferometry
• NEP — North Ecliptic Pole
• TDRS — Tracking and Data Relay Satellites
• RTK — Right-To-Know
• RTS — Relative Time Sequence
• STERE — Steward Observatory Reprints
• EMDM — European Medical Device Manufacturer
• MO — Mars Observer
• USAFA — United States Air Force Academy
• SPIE — The Society of Photo-optical Instrumentation Engineers
• PMA — Premarket Application
• ANBOS — Annals of the Bosscha Observatory Lembang
• SPAN — Space Physics Analysis Network
• NMDC — National Medical Device Coalition
• ROAN — Royal Observatory Annals
• UCLA — Harbor-University of California Los Angeles
• HEDIS — Healthplan Employee Data and Information
• STAR — Space Telescope Axial Replacement
• EBTC — Edison BioTechnology Center
• PAB — Publications of The Astrophysics Branch Ottawa
• CSVS — Catalogue of Suspected Variable Stars
• POL — Physician's Office Laboratory
• MVEMJSUNP — Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto
• AMDM — Association of Medical Diagnostics Manufacturers
• UADE — Unanticipated Adverse Device Effects
• MTF — Modulation transfer function.

• SRON — Space Research Organization of the Netherlands
• EDMA — European Diagnostics Manufacturer's Association
• RA — Research Assistant
• WILOO — Williamstown Observatory Observations
• LIGO — Laser Interferometer Gravitational-Wave Observatory
• NEA — Noise Equivalent Angle
• PACS — Physics and Astronomy Classification Schemex
• OCC — Operations control center
• VAP — Verification and Acceptance Program
• CST — Constant-Separation Traversing
• NED — NASA/IPAC Extragalactic Database
• SIRTF — Space Infrared Telescope Facility
• LPV — Long Period Variable
• MMBAA — Memoirs of the British Astronomical Association
• APSSS — Astrophysics and Space Science Supplement
• CARRE — Carter Observatory Wellington New Zealand Reprints
• HCPCS — Health Care Common Procedure Coding System
• ALMA — Atacama Large Millimeter Array
• M&P — Moon and Planets
• GEO — Geosynchronous Earth Orbit
• LRO — Large Radio Observatory
• MEDSUN — Medical Device Surveillance Network
• LST — Large Space Telescope
• AGN — Active Galaxy Nucleus
• NAG — Numerical Algorithms Group Inc.
• WFC — Wide-Field Camera
• DES — Deep Ecliptic Survey
• ANCGH — Annals of Royal Observatory, Cape of Good Hope
• COCIR — Coordination Committee of the Radiological and Electromedical Industries
• MPBU — Minor Planet Bulletin
• CAS — Cambridge Astrophysics Series
• SOPH — Solar Physics
• APT — Automatic Photometric Telescope
• NAHC — National Association of Home Care
• PAN-STARRS — Panoramic Survey Telescope and Rapid Response System
• SMART — Small Missions for Advanced Research in Technology
• COOXF — Communications from the University Observatory Oxford
• TOPS — Toward Other Planetary Systems
• NACA — National Advisory Committee on Aeronautics
• MAGIC — Major Atmospheric Gamma-ray Imaging Cherenkov Telescope
• ER — Eastern Range
• PDO — Publications of the Dominion Observatory Ottawa
• RAL — Radio Astronomy Laboratory
• MACHO — Massive Astronomical Compact Halo Object
• PWASO — Publications of the Washburn Observatory
• EPD — Energetic Particles Detector
• SMDA — Safe Medical Devices Act (1990)
• STSKY — Star Sky
• PMCCO — Publications of the Leander McCormick Observatory
• SSDF — Space Science Development Facility

• MNSSA — Monthly Notes of the Astronomical Society of South Africa
• CPD — Cape Photographic Durchmusterung
• MEDMARC — Medical Device Material Assurance and Reinsurance Company, Ltd.
• SPRRE — Sproul Observatory Reprints
• GRS — Gamma Ray Spectrometer
• JGR — Journal of Geophysical Research
• LDEF — Long Duration Exposure Facility (for Spacecraft Material Testing)
• KP — Kitt Peak
• PYUNO — Publications of the Yunnan Observatory
• MDC — Major Diagnostics Category
• SR — Spectral Recording
• RTC — Real-Time Command
• MNBIO — Minnesota Biotechnology
• CCA — Cambridge Contemporary Astrophysics
• IOA — Institute Of Astronomy (Cambridge)
• ISTS — Institute for Space and Terrestrial Science
• PAICZ — Publications of the Astronomical Institute of the Czechoslovak Academy of Sciences
• S&T — Sky & Telescope
• DSO — Deep Sky Object
• VDC — Volts, Direct Current
• CSM — Command and Service Module
• VEEGA — Venus-Earth-Earth Gravity Assist
• PKIRO — Publications of the Kirkwood Observatory of Indiana University
• IFCC — International Federation of Clinical Chemists
• ATM — Amateur Telescope Maker
• ST-ECF — Space Telescope - European Coordinating Facility
• PEB — Performance Evaluation Board
• BCS — Bragg Crystal Spectrometer
• TECRV — Technology Review
• ITF — Intensity Transfer Function
• AVSOR — American Association of Variable Stars Observers Reports
• EU — Extended Universe
• RGOB — Royal Greenwich Observatory Bulletin
• MACHO — Massive Compact Halo Object
• CRS — Cambridge Reference Sequence
• SST — Spitzer Space Telescope
• AMR — Antarctic Meteorite Research
• TMA — Tycho Magnetic Anomaly
• QTG — Quantum Theory of Gravity
• MOND — Modified Newtonian Dynamics
• MFR — Manipulator Foot Restraint
• JHU — The Johns Hopkins University (Baltimore, MD)
• SM — Standard Model
• ECA — Earth Crossing Asteroid
• MTI — Minnesota Technology Inc
• STMAP — Studies in Mathematical Physics
• LAMP — Lyman-Alpha Mapping Project
• AST — Astrometry Science Team
• TOCC — TDRS Operations Control Center
• LDEO — Lamont-Doherty Earth Observatory

• PAM-D — Payload Assist Module, Delta-class
• STHCG — Studies in High Energy Physics Cosmology and Gravitation
• HRS — High Resolution Spectrograph
• OAF — Optical Alignment Facility
• BDB — Big Dumb Booster
• MEERE — Kenneth Mees Observatory Reprints
• WMAP — Wilkinson Microwave Anisotropy Probe
• COPRI — Contributions from the Princeton University Observatory
• EUCOMED — European Confederation of Medical Suppliers Associations
• SOHO — SOlar and Heliospheric Observatory
• CPMF — cost plus management fee
• COAST — Communications in Asteroseismology
• PBPK — Physiologically-Based Pharmacokinetic
• EUV — Extreme Ultra-Violet 2
• TMP — Technical Management Plan
• BALTA — Baltic Astronomy
• CIT — Circumstellar Imaging Telescope
• GIO — graphics input/output
• TT — Terrestrial Time
• MTWRE — Mount Wilson and Palomar Observatory Reprints
• TNO — Trans-Neptunian Object
• WAA — Westchester Amateur Astronomers
• SIP — Sickness Index Profile
• MDRS — Mars Desert Research Station
• NOCC — Network Operations Control Center (GSFC)
• MVCA — Minnesota Venture Capital Association
• PCS — Physics and Chemistry in Space
• SPP — Subset Preprocessor
• FIRST — Frontiers in Research: Space and Time
• CCLRC — Central Laboratory of the Research Councils
• IRA — Infrared Astronomy
• XMM — X-ray Multi Mirror
• B/W — Black and White
• ISR — Instrument Science Report
• SGR — Soft Gamma Repeater
• WSMR — White Sands Missile Range (whiz-murr)
• GML — Galactic Modeling Language
• GAS — Getaway Special
• MS — Mission Schedule
• HAACP — Hazard Analysis Critical Control Points Program
• MPI — Minnesota Project Innovation
• UBM — Unpressurized Berthing Mechanism
• SAA — South Atlantic Anomaly
• SAT — Synthetic Aperture Telescope
• SIMBAD — Set of Identifications, Measurements, and Bibliography for Astronomical Data
• EAAA — Escambia Amateur Astronomers Association
• WSO — Wilcox Solar Observatory
• IPA — Institute for Polyacryclate Sciences
• MPC — Minor Planet Circulars
• MPC — Minor Planets Circular

• FPA — Floating Point Accelerator
• RM — Retrieval Mode
• BMDO — Ballistic Missile Defense Office
• PGOOO — Publications of the Goodsell Observatory
• NG — Newsgroup
• MTSOM — Mount Stromlo Observatory Mimeographs
• OPS — Operations Division
• D/A — Digital-to-Analog
• PASK — Publications of the Academy of Science Kasakstan
• MDR — Medical Device Register
• STEREO — Solar Terrestrial Relations Observatory
• MBBNET — Minnesota Biomedical Business Network
• USNOR — United States Naval Observatory Reports
• LOWOB — Lowell Observatory Bulletin
• MDA — Medical Device Amendments
• THAST — Theoretical Astrophysics
• MICRE — University of Michigan Observatory Reprints
• RTV — Room Temperature Vulcanizer
• TEC — Thermal Electric Cooler
• CCDM — Catalog of Components of Double and Multiple Stars
• GLOB — Globular
• VAFB — Vandenberg Air Force Base
• MACRO — Monopole, Astrophysics and Cosmic Ray Observatory
• NEO — Near Earth Object
• PDAA — Publications of the Department of Astronomy, Austin, Texas
• SPWD — Space World
• FK4 — Fundamental Katalog 4
• OBAFGKM — Oh, Be A Fine Girl, Kiss Me
• DOC — Data Operations Center
• BCG — Blue Compact Galaxy
• NSSCC — NORAD Space Surveillance Computation Center
• MODIS — Moderate Resolution Imaging Spectroradiometer
• ESS — Engineering Support System
• RAPS — radiologists, anesthesiologists, and pathologists
• RVGSP — Reviews of Geophysics and Space Physics
• AIT — Assembly, Integration, and Testing
• DSS — Digitized Sky Survey
• MTWAR — Mount Wilson and Palomar Observatory Annual Report
• ACE — Actuator Control Electronics
• OXFOO — Oxford University Observatory Observations
• LFT — Luyten Five-Tenths
• SPD — Solar Physics Division
• TBBT — The Big Bang Theory
• ERF — Energy Rejection Filter
• PF&CO — Publications of the Flower and Cook Astronomical Observatory
• TAG — Two-Axis Gimbal
• ASTQ — Astronomy Quarterly
• SARA — Satellite pour Astronomie Radio Amateur
• IAO — International Astronomy Olympiad
• IPNS — Intense Pulsed Neutron Source

• CVZ — Continuous Viewing Zone (Hubble Space Telescope; US NASA)
• PDA — Photon Detector Assembly
• EU — Engineering Unit
• 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)
• AGK3 — Katalog der Astronomischen Gesellschaft 3
• MMIC — Medical Manufacturers' Information Council
• MLI — Multilayer Insulation
• FAME — Full-sky Astrometric Mapping Explorer
• STARCAT — Space Telescope Archive Catalog
• ZPF — Zero-Point-Fluctuation
• FACC — Ford Aerospace Communications Corporation
• CSM — Circumstellar Material
• CSO — Caltech Submillimeter Observatory
• AOR — Astronomical Observation Request
• SMA — Secondary Mirror Assembly
• ODE — Office of Device Evaluation
• GDS — Great Dark Spot
• DLR — Deutschen Zentrum für Luft- und Raumfahrt
• B/L — Baseline
• HRA — High Resolution Apodizer
• MDR — Medical Device Reports
• POCC — Payload Operations Control Center
• MOWG — Mission Operations Working Group
• DN — Digital Number
• SB — Spectroscopic Binary
• NSC — Navigational Star Catalog
• TAI — International Atomic Time
• MER — Mars Exploration Rover
• TGF — Terrestrial Gamma-Ray Flash
• DISR — Descent Imager/Spectral Radiometer
• PVSS — Publications of Variable Star Section
• TAR — Test Authorization Request
• BHTA — British Healthcare Trades Industry
• FES — Fine Error Signal
• ESTEC — European Space Technology Center
• RLQ — Radio Loud Quasar
• ISO — Imaging Spectrometic Observatory
• OTHB — Over The Horizon Backscatter
• JVO — Japanese Virtual Observatory
• HLV — Heavy Lift Vehicle
• VAC — Volts, Alternating Current
• CCD — Color-Color Diagram
• MA — Medical Alley
• NR — Non-Relativistic
• CWS — Committee on World Standards
• FSM — First Servicing Mission
• JCMT — James Clerk Maxwell Telescope
• IRFNA — Inhibited Red Fuming Nitric Acid
• DDTE — Design, Development, Test, and Evaluation
• GVI — Global Village Idiot

• GSPC — Guide Star Photometry Catalog
• NSL — Northrop Space Laboratory
• SQPK — staggered quadrature phase shift keying
• LVPS — Low Voltage Power Supply
• CTO — Color Temperature Orange
• DQE — Detector Quantum Efficiency
• AST — Apparent Solar Time
• OGSE — Optical Ground Support Equipment
• JWST — James Webb Space Telescope
• BRITE — Bright-Star Target Explorer
• NEAF — North East Astronomy Forum
• FDI — failure detection and isolation
• IDT — Image Dissector Tube
• PBOSO — Publications of the Bosscha Observatory Lembang
• DENIS — Deep Near-Infrared Survey
• PNLF — Planetary Nebula Luminosity Function (astronomy)
• RICAP — Roma International Conference on Astroparticle Physics
• KBO — Kuiper Belt Object
• CM/QA — Configuration Management/Quality Assurance
• CDMH — Cold Dark Matter Haloes
• LERC — Lewis Research Center
• GST — Ground System Test
• BAC — Bordeaux Astrographic Catalog
• SP — Solar Physics
• SSGSR — Springer Verlag Springer Series on Group Geophysics Space Research
• KTB — Cretaceous-Tertiary Boundary
• OCB — Operational Configuration Baseline
• NM — Non-Moment
• SPDM — Special Purpose Dextrous Manipulator
• ETC — Estimated Time to Completion
• OOTU — Origin Of The Universe
• PV — photovoltaic (solar)
• SNAP — Structural Network Analysis Program
• WAA — Western Amateur Astronomers
• HVR — Hyper-Variable Region
• IPS — Inches Per Second
• SLAP — Space Link Access Protocol
• AGN — Active Galactic Nucleus
• PEP — Proposal Entry Processor
• FAST — Fast Auroral Snapshot Explorer
• ZD — Zenith Distance
• HEO — Highly Elliptical Orbit
• A/D — Analog to Digital (conversion)
• RMS — Record Management System
• ABBA — ADC Backend For Bolometer Array
• AAA — Amateur Astronomers Association
• SLOI — Satellite Lake Observatory Initiative
• EA — Eclipsing Algol
• RC — Relativistic Correction
• IWG — Interface Working Group

• Z — Redshift Factor
• BWI — Baltimore-Washington International Airport, between Baltimore, Maryland and Washington, DC, United States
• VRCS — Vernier Reaction Control System
• SKA — Square Kilometre Array
• CM — Center of Mass
• SWAT — Swift Action Team
• SST — Software Support Team
• FGE — Fine Guidance Electronics
• SV — Science Verification
• COTS — Cheap Off the Shelf
• SIC — Spacecraft Identification Code
• TMTE — Telemetry Test Equipment
• ODAS — OCA (Observatoire de la Côte d'Azur) - DLR (Deutschen Zentrum für Luft- und Raumfahrt) Asteroid Survey
• HFQPO(S) — high-frequency quasi-periodic oscillation(s)
• CCL — Closed Conference Loop
• VLT — Very Large Telescope
• LBN — Lynds Bright Nebula
• LCRS — Las Campanas Redshift Survey
• GTO — Guaranteed Time Observer
• MTR — Mean Time to Restore
• LCG — light curve generator
• CAI — Calcium Aluminum-rich Inclusion
• SXR — Soft X-Ray
• PSF — Point Spread Function
• RC — Reference Catalogue
• BDF — Block Data Format
• SN — SuperNova
• WCFZ — Worst Case Fresnel Zone
• AXP — Anomalous X-Ray Pulsar
• CPMM — characters per millimeter
• BOOK — Bio Optical Organized Knowledge
• CSPN — Central Star of Planetary Nebula
• ACRV — Astronaut Crew Rescue Vehicle
• SWEEPS — Sagittarius Window Eclipsing Extrasolar Planet Search
• SNR — SuperNova Remnant
• IRDC — Infrared Dark Cloud
• VFN — virtual file name
• ABB — After the Big Bang
• LBVS — Luminous blue variable
• MCSA — Mir Cooperative Solar Array
• ODC — Other Direct Cost
• UIT — Ultraviolet Imaging Telescope
• MPF — Mars PathFinder
• DQF — Data Quality File
• AEA — Atomic Energy Agency
• VOIR — Venus Orbiting Imaging Radar
• CCAR — Colorado Center for Astrodynamics Research
• IPPPSSOOT — file naming convention for HST data sets
• OLT — Observatory Level Test
• VLBA — Very Long Baseline Array

• SIA — Solar Inertial Attitude
• AVWG — Assembly and Verification Working Group
• SERF — Space Environment Research Facility
• ATR — Absolute Time Reference
• PLSS — Portable Life Support System
• ETOL — ESA Test and Operations Language
• SPIF — Shuttle/POCC Interface Facility
• HAO — High Altitude Observatory (NCAR)
• SFS — Smallest Feature Size
• NEA — Near-Earth Asteroid
• PMIRR — Pressure Modulated InfraRed Radiometer
• UIC — User Identification Code
• MOLA — Mars Observer Laser Altimeter
• RV — Radial Velocity
• ARGOS — Advanced Research Global Observation Satellite
• STERJ — Solar, Terrestrial and Environmental Research Japan
• EROS — Earth Resources Observation Satellite
• CELT — California Extremely Large Telescope
• SETI — Search for Extra Terrestial Intelligence
• LGRB(S) — long gamma ray burst(s)
• DMS — Data Management Subsystem
• T&E — Test and Evaluation
• DCF — Data Capture Facility
• SPRL — Space Physics Research Laboratory
• MONGO — Interactive graphics software package
• WTR — Western Test Range
• SP — sun point
• SED — Spectral Energy Distribution
• QV — quick visual
• COMPTEL — Compton Telescope
• SMM — Solar Maximum Mission
• ACV — Alpha Canes Venatici
• IDMP — International Daylight Measurement Program
• PK — Perek-Kohoutek
• NICMOS — Near-Infrared Camera and Multi-Object Spectrometer
• OMS — Observatory Monitoring System
• SCAS — Southern Cross Astronomical Society, Inc.
• GSOWG — Ground Systems Operations Working Group
• MSOCC — Multisatellite Operations Control Center
• VHE — Very High Energy
• GCVS — General Catalog of Variable Stars
• IDM — Intelligent Database Machine
• RGA — Rate Gyro Assembly
• SAL — Space Astronomy Laboratory (Univ. Wisconsin, Madison WI)
• APT — Automated Patrol Telescope
• CIP — Celestial Intermediate Pole
• OPB — Observation Planning Branch
• P&A — Physics and Astronomy
• AGK — Astronomische Gesellschaft Katalog
• SJC — slit jaw camera

• QZ — Quasi Zenith
• TOYAL — Transactions of the Astronomical Observatory of Yale University
• SOUST — Southern Skies
• LITVC — Liquid Injection Thrust Vector Control
• ORB — Observatoire Royal de Belgique (Royal Observatory of Belgium)
• SUVSR — Scandinavian Union of Amateur Astronomers Variable Star Section
• PAD — Pulse Amplitude Discriminator
• MIDAS — Munich Image Data Analysis System
• IAAC — Internet Amateur Astronomers Catalog
• HIPO — Hierarchic Input-Process-Output
• TIUCS — Transactions of the International Union for Cooperation in Solar Research
• CAAS — Central Arkansas Astronomical Society
• IRAC — International Radio Advisory Committee
• GEIS — Generic Edited Information Set
• A — Angstrom unit
• GMC — Giant Molecular Cloud
• PSL — Program Support Library
• TSTO — Two-Stage-To-Orbit
• EJASA — Electronic Journal of the Astronomical Society of the Atlantic
• UKIRT — United Kingdom Infrared Telescope
• SDP — science data packet
• WKO — Well-Known Object
• PASP — Publications of the Astronomical Society of Pacific
• SDMS — Spatial Data Management System
• FIRST — Far InfraRed and Submillimeter Space Telescope
• PRESTO — Project to Re-Engineer Space Telescope Observing
• NGS — National Geographic Society
• STOL — Systems Test and Operations Language
• VZA — Viewing Zenith Angle
• RASS — ROSAT All-Sky Survey
• STIF — Software Test and Integration Facility
• HB — Hot Bands
• LIRG — Luminous Infrared Galaxy
• SRS — Stellar Radiation Sensor
• EAPU — External Auxiliary Power Unit
• SWAS — Submillimeter Wave Astronomy Satellite
• VSSCI — Variable Star Section Circulars
• XN — X-ray Nova
• TKSC — Tsukuba Space Center
• PWM — pulse width modulated
• C/C — configuration control
• ORR — Orbit Readiness Review
• LENA — Low Energy Neutrino Astronomy
• AXAF — Assembly and Verification Working Group
• XIS — X-ray Imaging Spectrometer
• CSS — Catalina Sky Survey
• UDMH — Unsymmetrical Dimethyl Hydrazine (Alar Metabolite)
• TWA — TW Hydrae Association
• ZAP — Z Axis Precession
• ZHR — Zenith Hourly Rate

• PMDB — Project Management Data Base
• CFCO — Committee for Crescent Observation
• SUMER — Solar Ultraviolet Measurements of Emitted Radiation
• NOT — NOrdic Telescope
• WAA — Wiener Arbeitsgemeinschaft für Astronomie
• LBV — Luminous Blue Variable
• SPIEL — Signal Processing Interactive Extensible Language
• MSP — Millisecond Pulsar
• LSO — Large Solar Observatory
• SAGA — Solar Array Gain Augmentation
• SAOCO — Smithsonian Astrophysical Observatory - Contributions to Astrophysics
• E/A — Ephemeris/Attitude
• RPI — Rensselaer Polytechnic Institute (Rensselaer, NY)
• AOA — ASCA Online Arxiv
• ICSO — International Conference on Space Optics
• OCO — Oort Cloud Object
• SLTV — System Level Thermal Vacuum
• PODPS — Post Observation Data Processing System
• STR — Science Tape Recorder
• ZOF — zone of exclusion
• CVC — Current-to-Voltage Converter
• FRAS — fellow of the Royal Astronomical Society
• OC — Open Cluster
• BSG — Blue SuperGiant
• UST — Universal Standard Time
• OCS — Optical Control System
• RRAT — Rotating RAdio Transient
• FEM — Finite Element Model
• SQM — Strange Quark Matter
• HERA — Hermes Robotic Arm
• SOHO — Solar Heliospheric Observatory
• SAM — Small Angle Maneuver
• ETR — Engineering Tape Recorder
• UGSU — UG SU Ursae Majoris
• XCS — XMM Cluster Survey
• CISCO — Cooled Infrared Spectrograph and Camera for OHS
• WIYN — Wisconsin Indiana Yale NOAO Telescope Consortium
• RXTE — Rossi X-Ray Timing Explorer
• C&A — calibration and analysis
• ACS — Advanced Camera for Surveys
• SQPN — staggered quadriphase pseudo-random noise
• SSC — Science Support Center
• EAAS — East Antrim Astronomical Society
• RQZ — Radio Quiet Zone
• SCSP — Science and Culture Series Physics
• SPT — South Pole Telescope
• SEB — Source Evaluation Board
• GOX — Gaseous Oxygen
• RNP — Rotation, Nutation and Precession
• ESTR — Engineering and Science Tape Recorder

• PFI — Partial Frame Image
• MINISAT — Miniature Satellite
• OVIWG — Orbital Verification Implementation Working Group
• THEMIS — Thermal Emission Imaging System
• STAVF — Space Telescope Assembly and Verification Facility
• ITA — Institute of Theoretical Astronomy
• AET — Accuracy Enhancing Technology
• PORTS — Preliminary Operations Requirements and Test Support
• DDCU — DC-to-DC Converter Unit
• AEDP — Astrometry and Engineering Data Processing
• EAAE — European Association for Astronomy Education
• AESS — Institute of Electrical and Electronic Engineers - Aerospace and Electronics Systems Society
• AWG — Astronomy Working Group
• SXT — Soft X-Ray Telescope
• FPA — Focal Plane Assembly
• AQR — Aquarius
• IMSL — International Mathematical and Statistical Library
• VELLO — Very Low Luminosity Object
• LUT — Lookup Table
• FGS — Fine Guidance Sensors
• FGSAA — FGS Access Area
• MSTO — Main Sequence Turn-Off
• SFC — Space Forecast Center
• SIPS — Southern Infrared Proper Motion Survey
• CREAM — Cosmic Ray Energetics and Mass
• BITP — Bogolyubov Institute for Theoretical Physics
• DN — Dwarf Nova
• CNSR — Comet Nucleus Sample Return
• CBS — Contract and Business Services
• BOAO — Bohyunsan Optical Astronomy Observatory
• VSSRE — Variable Star Section Reprints
• ADIL — Astronomy Digital Image Library
• PPF — Payload Processing Facility (USAF)
• CG — Compact Galaxy
• CMC — Carlsberg Meridian Catalogue
• ATCA — Australia Telescope Compact Array
• CAAA — Capital Area Astronomy Association
• MAST — Multimission Archive at Space Telescope
• VERITAS — Very Energetic Radiation Imaging Telescope Array System
• BST — British Summer Time [GMT 0100]
• OSS — Observation Support System
• TAUVEX — Tel Aviv University Ultraviolet Explorer
• ODL — Observation Data Log
• RFT — Rich Field Telescope
• SIF — Science Instrument Formatter
• CMT — Carlsberg Meridian Telescope
• NEMP — Nitrogen-Enhanced Metal-Poor
• IRCS — Infrared Camera and Spectrograph
• AAAM — Active Amateur Astronomers of Maryland
• PASP — Proceedings of the Astronomical Society of the Pacific

• CCIR — Comit? Consultatif International Pour La Radio (French For Consultative Committee On International Radio
• ASP — Analog Signal Processor
• STOCC — Space Telescope Operations Control Center (GSFC, Greenbelt MD)
• VGRF — Variable-Gravity Research Facility
• SMOV — Servicing Mission Observatory Verification
• RAG — Radio Astronomy Group
• LC — Las Campanas observatory
• IRAIT — International Robotic Antarctic Infrared Telescope
• SPA — Solar Panel Assembly
• SEP — System Enhancement Plan
• COMICS — Cooled Mid-Infrared Camera and Spectrometer
• RC — Ritchey-Chretien
• SETA — Search for Extra Terrestrial Artifacts
• ASKAP — Australian Square Kilometre Array Pathfinder
• PSR — Project Status Review
• IQL — Interactive Query Language
• NAO — National Astronomy Olympiad
• ALAT — Airborne Large Aperture Telescope
• SHAD — Stellar Horizon Atmospheric Dispersion
• CVAS — Chippewa Valley Astronomical Society
• ACM — Asteroids Comets Meteors
• PFS — Percent Full Scale
• EMP — Extremely Metal-Poor
• VRSD — Verification Requirements and Specifications Document
• RPO — Research Programs Office
• DCEP — Delta Cepheid
• LOTOSS — Lick Observatory and Tenagra Observatory Supernova Searches
• EHB — Extreme Horizontal Branch
• XSC — Extended Source Catalog
• TECU — Technology and Culture
• EKBO — Edgeworth-Kuiper Belt Object
• GLOW — Gross Lift-Off Weight
• HDOS — Hughes Danbury Optical Systems (Danbury CT)
• STSDAS — Space Telescope Science Data Analysis System
• PDBI — Plateau de Bure Interferometer
• DPOSS — Digitized Palomar Observatory Sky Survey
• PWD — Pre-White Dwarf
• MCG — Morphological Catalog of Galaxies
• EVAC — East Valley Astronomy Club
• QPSK — quadriture phase shift keying
• STEIS — Space Telescope Electronic Information System
• PNG — Planetary Nebulae, Galactic
• STL — science trailer line
• ADAF — Advection-dominated Accretion Flow
• ROLUN — Reports of the Lund Observatory
• CDCA — Centre de Depoiullement des Cliches Astronimiques
• ARAA — Annual Review of Astronomy and Astrophysics
• ICF — Intrinsic Correlation Function
• ETRD — Engineering Tape Recorded Data
• WIRCAM — Wide-field InfraRed Camera, instrument on the Canada-France-Hawaii Telescope

• GMRT — Giant Meter-wave Radio Telescope
• REPT — Relativistic Electron-Proton Telescope
• ACP — Aerosol Collector and Pyrolyser
• KAIT — Katzman Automatic Imaging Telescope
• DOV — Director of Orbital Verification
• GSSS — Guide Star Selection System
• MS — Meteor Scattering
• OAO — Orbiting Astronomical Observatory
• HTHL — Horizontal Takeoff Horizontal Landing
• SQIID — Simultaneous Quad Infrared Imaging Device
• CFCP — Center for Cosmological Physics
• VPC — viewport coordinates
• SS — System Simulator
• IFT — Inverse Fourier Transform
• MPCS — Minor Planet circulars Supplement
• NPS — North Polar Sequence
• WBHF — WideBand High Frequency
• CEMP — Carbon-Enhanced Metal-Poor
• AAT — Anglo-Australian Telescope
• SANSA — South African National Space Agency
• QPOE — Quick Position Oriented Event
• DSOB — Data Systems Operations Branch
• R&I — Receiving and Inspection
• CIBR — Cosmic Infrared Background Radiation
• SOFA — Standards of Fundamental Astronomy
• UCSD — University of California San Diego
• QPO — Quasi-periodic Oscillation
• MWO — Mount Wilson Observatory
• BMO — Black Moving Object
• CM — Critical mass
• ACS — Actuator Control System
• WISARD — Web Interface for Searching Archival Research Data
• DVA — Detector Vacuum Assembly
• IRAC — Infrared Array Camera
• UMCP — University of Maryland College Park
• RNGC — Revised New General Catalog
• VILCO — Villanova University Observatory Contributions
• BATC — Beijing-Arizona-Taiwan-Connecticut
• MU — Memory Unit
• RIACS — Research Institute for Advanced Computer Science
• TFMRP — Transfer Function Mode Reduction Package
• CSLG — Campus-wide Software License Grants Program
• CADC — Canadian Astronomical Data Center
• IRTF — Infrared Telescope Facility
• EBE — Extraterrestrial Biological Entity
• MOXE — MOnitoring X-Ray Experiment
• LRG — Luminous Red Galaxy
• SSU — Steady State Universe
• CTIO — Cerro Tololo Inter-American Observatory
• SPE — Static Phase Error

• SIMA — Secondary Mirror Incremental Motor Actuator
• SSRV — Space Science Reviews
• MOSES — Mission Operations and Systems Engineering Support
• PNNV — Planetary Nebula Nucleus Variable
• FPSA — FPA Structure Assembly
• CINEOS — Campo Imperatore Near-Earth Object Survey
• PTF — Payload Test Facility
• VVDS — VIMOS-VLT Deep Survey
• ELIAS — European Large Area ISO Survey
• NAIF — Navigation Ancillary Information Facility
• SEI — Space Exploration Initiative
• ECT — Equator Crossing Time
• SAS — Science Analysis Software
• YSO — Young Stellar Object
• OCST — Office of Commercial Space Transportation
• HESI — High Energy Solar Imager
• CSPAR — Center for Space Plasma and Aeronomic Research
• SJR — Software Justification Report
• CASB — Catalogs and Survey Branch
• NLTE — Non-local Thermodynamic Equilibrium
• CRAP — Completely Radical Anthropic Principle
• LPICO — Lunar and Planetary Institute Contributions
• WKAA — West Kentucky Amateur Astronomers
• ULAS — Union List of Astronomy Serials
• OSB — Operations Software Branch
• ACURA — Association of Canadian Universities for Research in Astronomy
• SEA — Sensor Electronics Assembly
• LP — Luyten Palomar
• IIPS — Interactive Image Processing System
• BCCP — Berkeley Center for Cosmological Physics
• TASS — The Amateur Sky Survey
• CMCC — Central Mission Control Centre
• VRM — Venus Radar Mapper
• BEM — Bug-Eyed Monster (Late 40's-early 50'soft-used, and still in use, Sci-Fi term)
• NRF — National Research Foundation
• STIF — Science and Technology Information Facility
• LINER — Low Ionization Nuclear Emission Region
• ISPM — International Solar Polar Mission
• SINGS — Spitzer Infrared Nearby Galaxies Survey
• OV — Orbital Verification
• TAU — Thousand Astronomical Unit
• MLRS — McDonald Laser Ranging Station
• IARA — Italian Amateur Radio Astronomy
• ENE — East North East
• BDEC — Bendix Field Engineering Corporation
• ETI — Extraterrestrial Intelligence
• SMBH — Super Massive Black Hole
• GPB — Group Parameter Block
• NIMS — Near-Infrared Mapping Spectrometer
• FOCAS — Faint Object Classification and Analysis System

• AAS — Archaeology Astronautics and Seti
• SPWEA — Space Weather
• TO — target of opportunity
• AVO — Astrophysical Virtual Observatory
• OPD — Operations and Data Processing Division
• AJD — Astronomical Julian Day
• PSI — Planetary Science Institute
• WFS — Wave Front Sensor
• TCB — Barycentric Coordinate Time
• EUSO — Extreme Universe Space Observatory
• TTC — telemetry, tracking, and command
• TML — Total Mass Loss
• ASWG — Astronomical Science Working Group
• LST — Local Sidereal Time
• LFAE — Light Field Attribute Explorer
• CSAA — Committee on Space Astronomy and Astrophysics
• LCDM — Lambda Cold Dark Matter
• FSS — Flight Servicing System
• SVWG — Science Verification Working Group
• APSB — Advance Planning Systems Branch
• SIB — Science Instrument Branch
• SMM — science mission management
• GCC — Globular Cluster Candidate
• CMBR — Cosmic Microwave Background Radiation
• TAROT — Télescope à Action Rapide pour les Objets Transitoires
• SID — Software Implementation Directive
• OPUS — OSS and PODPS Unified Systems
• MOTV — Manned Orbital Transfer Vehicle
• APASS — AAVSO Photometric All-Sky Survey
• ASAS — All Sky Automated Survey
• MMR — Mean-Motion Resonance
• FFD — First Fixation Duration
• ADAS — Asiago DLR Asteroid Survey
• HTVL — Horizontal Takeoff Vertical Landing
• SF — Star Field
• STDN — Satellite Tracking and Data Network
• RPSS — Remote Proposal Submission System
• GAF — Geographic Adjustment Factor
• OFAD — Optical Field Angle Distortion
• GXY — Galaxy
• NCSA — National Center for Supercomputer Applications (Urbana IL)
• BAV — Bundesdeutsche Arbeitsgemeinschaft fur Veraenderliche Sterne
• ISEE — International Sun Earth Explorer
• DS — Dwarf Star
• AEG — Astro Event Group
• ♅ — Uranus
• FPAS — FPA Shroud
• CCO — Catalogue of Cometary Orbits
• PSR — Pulsar Supernova Remnant
• AUDS — ALFA Ultra Deep Survey

• COL — Collinder catalog
• JOP — Joint Observing Program
• RSB — Research Support Branch
• LMST — Local Mean Sidereal Time
• TIB — Telescope Instrument Branch
• SSO — Special Studies Office
• PNN — Planetary Nebula Nucleus
• OSCAR — Orbital Satellite Carrying Amateur Radio
• DCA — Detector Control Assembly
• IV — intra vehicular
• SCARS — Science Computing & Research Support Division
• CRRES — Combined Release Radiation Effects Satellite
• BRAVO — Back-End Redesign for Added Value for Observers
• CC — Candidate Companion
• PUSNO — Publications of the US Naval Observatory
• RABF — Radio Astronomy Bandstop Filter
• GEM — Galileo Europa Mission
• DIG — Dwarf Irregular Galaxy
• PROS — Post Reduction Offline Software
• SOSYR — Solar System Research
• STVSW — Space Telescope Verification Software
• OPO — Operations Project Office
• ADS — Aitken Double Stars
• PNS — Pulsed Neutron Source
• TCG — Geocentric Coordinate Time
• FASTT — Flagstaff Astrometric Scanning Transit Telescope
• CNES — Centre National d'Etude Spatiales
• OCX — observation comments file
• ILOC — International Lunar Occultation Center
• XBP — X-Ray Bright Point
• IVC — Institute Visiting Committee
• LEST — Large Earth-based Solar Telescope
• GBT — Green Bank Telescope
• CXBR — Cosmic X-ray Background Radiation
• SCSA — Science and Culture Series Astrophysics
• NLST — National Large Solar Telescope
• PEP — PhotoElectric Photometry
• MUSTANG — Multiplexed SQUID TES Array at Ninety GHz
• SGEMP — Space-Generated Electromagnetic Pulse
• PRE — Photospheric Radius Expansion
• WOMBAT — Wavelength-Oriented Microwave Background Analysis Team
• EAFB — Edwards Air Force Base
• SPSS — Science Planning and Scheduling System
• ERRSAC — Eastern Regional Remote Sensing Applications Center
• GC — Galactic Center
• KIC — Kepler Input Catalog
• WGAS — Working Group on Astronomical Software
• PUAMS — Publications of the Astronomical Institute of the University of Amsterdam
• CAMAC — Computer-Aided Measurement and Control
• LMSC — Lockheed Missile and Space Corporation

• BZ — Brillouin zone - a uniquely defined primitive cell in reciprocal space
• NEAP — Near Earth Asteroid Prospector
• RLOF — Roche Lobe Overflow
• CDIMP — Catalogue of Discoveries and Identifications of Minor Planets
• CHIP — Cosmic Hot Interstellar Plasma
• ESB — Engineering Support Branch
• MOID — Minimum Orbit Intersection Distance
• FEAT — Fine Error Averaging Test
• IPMO — Isolated Planetary-Mass Objects
• PGPLOT — FORTRAN subroutine library for plotting graphics
• NDC — Network Data Center
• KAO — Kuiper Airborne Observatory
• WFCAM — Wide Field Camera
• STIC — Space Telescope Institute Council
• CHZ — Circumstellar Habitable Zone
• ULE — Ultralow Expansion
• LTM — Like The Moon
• TSI — Total Solar Irradiance
• CSV — Catalog of Suspected Variables
• C&DH — Control and Data Handling
• TUASR — Tokyo University Institute of Space and Aeronautical Science Report
• DBW — decibel reference to 1 watt
• CTRF — Celestial and Terrestrial Reference Frames
• BLO — Bl Lac Object
• RMS — Remote Manipulator System
• TYC — Tycho
• RWA — Reaction Wheel Assembly
• SGRB(S) — short gamma ray burst(s)
• ICRC — International Cosmic Ray Conference
• DAV — Deerlick Astronomy Village
• MMF — Moving Magnetic Feature
• IWCA — International Workshop on Cometary Astronomy
• SMA — Submillimeter Array
• CNS — Computing and Network Services
• LOSS — Lick Observatory Supernova Search
• MAG — Magnitude
• NIU — NASCOM Interface Unit
• PCT — Program Coordinator Team
• SUPRIME — SUbaru PRIME focus CAMera
• WIRE — Wide-Field Infrared Explorer
• LWR — Long Wavelength Redundant
• BPM — Bruce Proper Motion
• MV — absolute visual magnitude
• LETGS — Low Energy Transmission Gratings Spectrometer
• IPPW — International Planetary Probe Workshop
• UGSS — UG SS Cygni
• AGAPE — Andromeda Galaxy and Amplified Pixels Experiment
• ASCA — Advanced Satellite for Cosmology and Astronomy
• RDI — Radiation Driven Implosion
• CG — Cometary Globule

• SEST — Swedish-ESO Submillimetre Telescope
• DSD — Data Systems Division
• ECA — Electronics Control Assembly
• BBH — Big Black Hole
• SMM — Spectro-Mirror Mechanism
• SESD — Science and Engineering Systems Division
• LINEAR — Lincoln Near Earth Asteroid Research
• Q&A — qualification and acceptance
• SDM — Secondary Deployment Mechanism
• VSOLB — Variable Star Observers League in Japan - Bulletin
• MONS — Measuring Oscillations in Nearby Stars
• FGC — Flat Galaxy Catalogue
• SIAF — Science Instrument Aperture File
• PMPS — Parkes Multibeam Pulsar Survey
• CRTS — Centre Royal de Teledetection Spatiale
• PFM — Pre-Flight Module
• SS — Safing System
• PEPE — Plasma Experiment for Planetary Exploration
• LHS — Luyten Half-Second
• CCITT — Consultative Committee on International Telegraph & Telephone
• OST — Observation Sequence Table
• RVMA — Reviews in Modern Astronomy
• NEO — Near-Earth Object - Non-combatant Evacuation Operations
• RORF — Radio/Optical Reference Frame
• OGLE — Optical Gravitational Lensing Experiment
• MLY — Mega Light Year
• MEM — Maximum Entropy Method
• TIC — Tycho Input Catalog
• FEB — Falling-Evaporating Body
• NOMAD — Naval Observatory Merged Astrometric Dataset
• DDF — Directors Discretionary Funds
• SHAR — Stellar Horizon Atmospheric Refraction
• IOTA — Infrared-Optical Telescope Array
• GRAND — Gamma Ray and Neutron Detector (NASA)
• SMC — Small Magellanic Cloud
• START — Solar Thermal Analysis Review and Training
• EMP — Ephemerides of Minor Planets
• SIPE — Science Instrument Protective Enclosure
• TUASB — Tokyo University Institute of Space and Aeronautical Science Bulletin
• UKST — United Kingdom Schmidt Telescope
• GHZ — Galactic Habitable Zone
• EAC — European Astronaut Centre
• ULX — Ultra-Luminous X-ray source
• ACIS — Advanced CCD Imaging Spectrometer
• SSD — Science Support Division
• ACT — Astrographic Catalog Tycho
• CIB — Cosmic Infrared Background
• VSSSC — Variable Star Section Special Circulars
• SAOC — SAO Catalog
• MPP — multi-pinned phase

• EAPJ — Electronic AstroPhysical Journal Letters
• CIAO — Coronagraphic Imager with Adaptive Optics
• RC — Red Clump
• JFC — Jupiter Family Comets
• GRB — Gamma Ray Bursters
• EARS — Electrostatic Atmospherics Radio Sensor
• UNPSA — United Nations Programme on Space Applications
• FIRST — Faint Images of the Radio Sky at Twenty-centimeters
• STAC — Space Telescope Advisory Council
• CXO — Chandra X-ray Observatory
• RSG — Red Super Giant
• GSP — General Support Pool
• IB — Interstellar Band
• WRO — Warren Rupp Observatory
• TAC — telemetry and command processor
• UKIDSS UKIRT — Infrared Deep Sky Survey
• LOTIS — Livermore Optical Transient Imaging System
• ROTSE — Robotic Optical Transient Search Experiment
• TAAA — Tucson Amateur Astronomy Association
• CSWA — Committee on the Status of Women in Astronomy
• IAU — International Astrophysical Union
• MGS — Mars Global Surveyor
• TRACE — Transition Regional and Coronal Explorer
• GDSO — Georgi Dobrovolski Solar Observatory
• CST — Constant Strain Triangle
• USMP — United States Microgravity Payload
• DRS — Direct Receiving Station
• ECF — European Coordinating Facility
• BCVS — Bibliographic Catalogue of Variable Stars
• SDA — Science Data Analyst Small Computer Systems Interface
• SOARD — Steward Observatory Asteroid Relational Database
• DRD — Data Requirements Document
• GRAB — Galactic Radiation and Background
• LSST — Large Synoptic Survey Telescope
• SMO — Servicing Mission Office
• MKO — MAUNA KEA OBSERVATORY
• CGRO — Compton Telescope
• PRB — Preliminary Review Board
• DDA — Division on Dynamical Astronomy
• MW — Milky Way
• SWRI — Southwest Research Institute
• SDF — Science Data Formatter
• SDAS — Scientific Data Analysis System
• SOGS — Science Operations Ground System
• TAAS — The Albuquerque Astronomical Society
• DAG — Doğu Anadolu Gozlemevi
• SOB — Science Observatory Branch
• CDBS — Calibration Data Base System
• OBP — Onboard Processor
• CRAQ — Centre for Research in Astrophysics of Québec

• WCS — World Coordinate System
• SAREX — Search and Rescue Exercise
• MSO — Mount Stromlo Observatory
• O — Oblivion
• ACK — acknowldgement message
• AMASE — Astrophysics Multi-Spectral Archive Search Engine
• RTLT — Round Trip Light Time
• ABRIXAS — A BRoadband Imaging X-ray All-sky Survey
• MRSRM — Mars Rover and Sample Return Mission
• NLTT — New Luyten Two-Tenths
• HLO — High Light Output
• ESIS — European Space Information System
• LSG — Liaison Scientists Group
• SXG — Spectrum-X-Gamma
• CRL — Compound Refractive Lens
• HSI — Host System Interface
• NS — Neutron Star
• SAO — Swinburne Astronomy Online
• CCMS — Command Control and Monitor System
• DES — Dark Energy Survey
• PFR — Portable Foot Restraint
• R-L — Richardson-Lucy
• STFS — Space Telescope Flight Software
• VISTAR — visible space tracking and reconnaissance
• PASS — POCC Application Software Support
• TRB — Test Review Board
• DEFCAL — deflection calibration
• MLSO — Mauna Loa Solar Observatory
• SFN — Star Formation Newsletter
• QEH — Quantum Efficiency Hysteresis
• SEST — Swedish ESO Submillimeter Telescope
• SMC — Standard Model of Cosmology
• SCUBA-2 — Submillimetre Common User Bolometer Array 2
• VPU — video processing unit
• SPG — Special Projects Group
• WSGS — White Sands Ground Station
• OW — Outer Wall
• SPYBAL — spectrum Y balance
• VISTA — Visible and Infrared Survey Telescope for Astronomy
• MT — Moving Target
• SCP — Science Data Analyst
• UGZ — UG Z Camelopardalis
• LONEOS — Lowell Observatory Near-Earth-Object Search
• LP — Lonely Planet
• SCAC — Science Computing Advisory Commitee
• GRS — Great Red Spot
• ALTS — Astronomy Lunch Time Seminar
• BCD — Basic Calibrated Data
• NGS — New Generation STAR
• HVPS — High Voltage Power Supply

• MYSO — Massive Young Stellar Object
• PAR — Photon Activity Rate
• SCP — Small Computer Systems Interface
• SUGRA — Supergravity
• WF/PC — Wide Field/Planetary Camera
• RSFC — Radially Stratified Flame Core
• SPS — Solar Power Satellite
• CCO — Central Compact Object
• SSSPM — SuperCOSMOS Sky Survey Proper Motion
• US/PS — see PRESTO
• WFPC2 — Wide Field Planetary Camera-2
• NODO — NASA Orbital Debris Observatory
• DSOS — Dish Surface Optimization System
• CCAS — Cape Cod Astronomical Society
• PACS — Photoconductor Array Camera and Spectrometer
• ASTRO — Autonomous Space Transport Robotic Operations
• SWAN — Solar Wind ANisotropy
• SLSN-I — hydrogen-poor SLSNe
• EF — Event Foreground
• BATTERS — Bisei Asteroid Tracking Telescopes for Rapid Survey
• SSRT — Single Stage Rocket Technology
• EOSL — Earth Observation Systems Laboratory
• NESS — Near Earth Space Surveillance
• GMOS — Gemini Multi-Object Spectrographs
• TFOV — target field of view
• ISSA — Infrared Sky Survey Atlas
• SIMM — Standard Inline Memory Module
• NIR — Near Infrared Research
• SMS — Sun Moon and Stars
• DCL — Digital Control Language
• ACA — Atacama Compact Array
• SHAD — Stellar Horizon Attitude Determination
• CTWG — Calibration Targets Working Group
• EGRET — Energetic Gamma-Ray Experiment Telescope
• AD — Analog to Digital
• SSA — Star Selector Assembly
• WXQ — Waxing Quarter
• SHP — Standard Header Packet
• UVCS — Ultraviolet Coronal Spectrometer
• BRAS — Baton Rouge Astronomical Society
• PW&SO — Publications of the Warner Swasey Observatory
• MEPCO — Meeting of European Planetary and Cometary Observers
• DBSA — Database and System Administration team
• VF — Variable Frequency
• SDD — Single Dish Data
• LPCI — Lunar Phases Concept Inventory
• LDE — Long Duration Event
• SPB — Science Planning Branch
• RCS — Readiness Control System
• MOMV — Manned Orbital Maneuvering Vehicle

• XANES — X-Ray Near Edge Spectroscopy
• TZO — Thorne-Å»ytkow Object
• MEV — million electron volts
• E — Eclipsing
• TPI — Technical Proposal Instructions
• MOSS — Moving Object Support System
• BSS — Blue Straggler Star
• ASIAA — Academia Sinica Institute of Astronomy and Astrophysics
• XMM — X-ray Multi- Mirror satellite
• SVPHA — Soviet Physics Astronomy
• UGWZ — U Gem variable type star (WZ Sagittae sub-type)
• CMOS — Complimentary Metal Oxide Semiconductor
• OAOT — Orbiting Astronomical Observatory Technology
• AH — ampere hours
• RTC — Researching The Cosmos
• CFS — Chandrasekhar - Friedmann - Schutz instability
• SER — Systems Engineering Report
• AOC — Award Of Contract
• SCOA — Smithsonian Contributions to Astrophysics
• PBO — Pine Bluff Observatory
• GIMP — Geomagnetically Induced Motion Problem
• FRB(S) — gamma ray burst(s)
• CGRO — Compton Gamma Ray Obsrvatory
• DSN — deep-space network
• IMIO — Image Input/Output
• L — Lagrange
• MFP — magnetic field perturbation theory
• ECEF — EarthCentered EarthFixed
• ATPI — Astronomy Through Practical Investigations
• AER — Astronomy Education Review
• SAD — Supra-Arcade Downflow
• BSS — Bigelow Sky Survey
• CST — Constant
• WAC — Wide Angle Converter
• CFHT — Canada-France-Hawaii Telescope
• SSPRV — Space and Solar Power Review
• EIT — Extreme Ultraviolet Imaging Telescope
• HPR — Hardware Problem Report
• SIS — SETI (Search for Extra-Terrestial Intelligence) Intercept System
• NGT — Next Generation Telescope
• DE — Dwarf elliptical
• ODS — Our Dark Skies
• MPEC — Minor Planets Electronic Circular
• PASA — Pan-Arab Space Agency
• IBBTF — Imagination Baffled By The Facts
• PEPSI — PEP System
• WSAL — Winston-Salem Astronomical League
• SCUBA — Submillimetre Common User Bolometer Array
• ESTEC — European Space Research and Technology Center
• LV — Lunette Verte

• SAREX — Space Amateur Radio Experiment
• LSVT — Large Solar Vacuum Telescope
• RS — Reed-Solomon error detection
• IRD — Interface Requirements Document
• ICET — International Center for Earth Tides
• AOSS — AURA Observatory Support Services
• PWHHO — Publications of West Hendon House Observatory, Sunderland
• MICO — Multi-year Interactive Computer Almanac
• SDS — Star Diagnosis System
• UAO — University of Arizona Observatories
• GKS — Graphic Kernel System
• LAMO — low altitude mapping orbit
• SZE — Sunyaev-Zeldovich Effect
• SVAL — Soviet Astronomy Letters
• HMC — Halley Multicolor Camera
• SFD — SXT Full Disk
• PTF — Palomar Transient Factory
• TRES — Transatlantic Exoplanet Survey
• WBS — Wide Band Spectrometer
• SSB — Science Software Branch
• MPP — Multi-Pinned-Phase
• VMC — Velocity Modulating Camera
• SIP — Software Implementation Plan
• PWN — Pulsar Wind Nebula
• TBC — Time Base Correctors
• WYBT — Whole Year Blazar Telescope
• PSS — Palomar Sky Survey
• LM — Low Mass
• NTR — Nuclear Thermal Rocket
• VIMOS — Visible Multiobject Spectrograph
• SOFA — Selectable Optical Filter Assembly
• JSGA — Japan Spaceguard Association
• HSC — Hierachical Storage Controller
• ACYG — Alpha CYGni
• GRU — Ground Replaceable Unit
• SRAA — Scenic Rim Astronomy Association, Inc.
• DCMF — Data Capture and Management Facility
• MOST — Microvariability and Oscillations of STars Telescope
• CEP — CEPheid
• VVS — Vereniging voor Sterrenkunde
• CODE — Creation Out of Deep Energy
• SAMPEX — Solar Anomalous And Magnetospheric Particle Explorer (spacecraft)
• CCDS — Centers for the Commercial Development of Space
• LOFAR — Low Frequency Array
• EBL — Extragalactic Background Light
• UGWZ — UG WZ Sagittae
• UG — U Geminorum
• DM — Dark Matter
• WFAO — Wide Field Adaptive Optics
• EDB — Engineering Data Base

• CGCS — Cool Galactic Carbon Star
• EPAO — Educational and Public Affairs Office
• WDS — Washington Double Star
• RSA — Revised Shapley-Ames
• AC — Ascendant Cusp
• SOFIA — Stratospheric Observatory for Infrared Astronomy
• DCX — Delta Clipper Experimental
• GASA — Graduate Astronomy Students Association
• UVOT — Ultraviolet Optical Telescope
• EED — Extracted Engineering Data
• SPSO — Science Program Selection Office
• PM — Primary Mirror
• GSY — Galactic Standard Year
• NEAT — Near Earth Asteroid Tracking
• MOR — Mission Operations Room
• MDB — multiplexed data bus
• EOT — End Of Tape
• AMSU — Advanced Mass Spectrometry Unit
• ERO — Extremely Red Object
• ULIRG — Ultraluminous Infrared Galaxy
• HAC — Huachuca Astronomy Club
• LMXB — Low-Mass X-Ray Binary
• ORFEUS — Orbiting and Retrievable Far and Extreme Ultraviolet Spectrometer
• ACTS — Advanced Communications Technology Satellite
• WAT — Wide Angle Tail
• WINAR — Windsor Observatory Annual Report
• MSE — Milton S. Eisenhower library
• GCI — geocentric intertial
• HETE-2 — high energy transient explorer
• USOC — Unified System Orbit Computation
• RSAA — Research School of Astronomy and Astrophysics
• SCRT — Stockholm Centimetre Radio Telescope
• TB — Thermal Balance
• BHAS — Black Hills Astronomical Society
• WFIS — Wide-Field-of-view Imaging Spectrometer
• FIGV — Factor Inercial de Ganho solar do enVidracado
• IAPPP — International Amateur/Professional Photoelectric Photometry
• RE — ROSAT (ROentgen SATellite) EUV (Extreme Ultra-Violet)
• TO — Texas Instruments
• SDH — science data header
• IRS — International Reference Star
• STIS — Space Telescope Imaging Spectrograph
• SSS — SuperCOSMOS Sky Surveys
• STARS — Seismic Telescope for Astrophysical Research from Space
• MIPS — Multi-band Imaging Photometer
• SB — Super Bright
• CP — Chemically Peculiar
• SPC — Short Period Comets
• MSC — Mission Support Calibration
• NTT — New Technology Telescope

• SAR — Software Analysis Room
• TAMS — Terminal-Age Main Sequence
• WBS — Work Breakdown Schedule
• WSF — Wake Shield Facility
• VTT — Vacuum Tower Telescope
• CTA — Computer Technology Associates (GSFC)
• LSA — Large Science Aperture
• BHXRT — Black Hole X-Ray Transient
• SBIG — Santa Barbara Instrument Group
• GAAC — Gloucester Area Astronomy Club
• SSE — Star Selector Encoder
• CANX — Canadian Advanced Nanospace Experiments
• EBA — Electronics Bay Assembly
• CCSN — core-collapse supranovæ
• WDM — Warm Dark Matter
• ARAS — Astronomical Ring for Access to Spectroscopy
• XRB — X-Ray Background
• NFF — New Firm Formation
• CVA — Central Valley Astronomers
• ORD — Operations Requirements Document
• PPM — Positions And Proper Motions (catalog)
• BIMA — Berkeley-Illinois-Maryland Array
• SSC — STEIS Steering Committee
• RMS — Republic Management Systems, Inc.
• RSS — Rotating Service Structure
• SSPS — Sky Survey Prototype System
• SCL — Service Control Level
• LWS — Long-Wave Spectrograph
• MUNICS — MUnich Near-Infrared Cluster Survey
• CA — Coronagraphic Apodizer
• UV-VIS — Ultraviolet - Visible
• DIB — Diffuse Interstellar Band
• RAMBO — Robust associations of massive baryonic objects
• IGI — Interactive Graphics Interpreter
• ITT — International Telephone and Telegraph Corporation
• ASW — Address and Synchronization Word
• CTTS — Classical T Tauri Star
• MUF — Mysterious Unknown Force
• LN2 — liquid N2
• SXARI — SX ARIetis
• TAI — International Atomic Time (Temps Atomique International) [to 2015 July 1st, 35s ahead of UTC; from 2015 July 1st, 36s ahead of UTC.]
• QBSA — Quarterly Bulletin on Solar Activity
• PDS — Photometric Data Systems
• MPS — Microlensing Planet Search
• TMN — Tokyo Meteor Network
• MUSES — MU Space Engineering Spacecraft
• VCC — Virgo Cluster Catalog
• GTC — Gran Telescopio Canario
• SXPHE — SX PhoEnicis
• ASWG — ATST (Advanced Technology Solar Telescope) Science Working Group

• SCT — Schmidt-Cassegrain Telescope
• CNO — Carbon-Nitrogen-Oxygen
• NDV — NASP Derived Vehicle
• MACRO — Monopoles, Astrophysics, and Cosmic Ray Observatory
• EOR — End of Record
• QE — Quality Engineer
• SCMS — STScI Code Management System
• STAN — Space Telescope Analysis Newsletter
• EOL — Earth Observing Laboratory (formerly ATD)
• SVA — Soviet Astronomy
• XRF — X-Ray Flash
• LIC — local interstellar cloud
• SIDS — SI Detector System
• TLP — Transient Lunar Phenomenon
• PSR — Pulsar
• CCS — Cool Carbon Star
• PGC — Principal Galaxy Catalog
• CODMAC — Committee on Data Management and Computing
• GGC — Giant Gravity Core
• NSUM — Non-Spatial Universal Mechanics
• BCD — Blue Compact Dwarf
• WFAU — Wide-Field Astronomy Unit
• FD — File Descriptor
• MMA — Milli Modulation Amplitude
• CRSR — Center for Radiophysics and Space Research
• PZT — Photographic Zenith Tube
• R&R — Reproducibility And Repeatability
• EGGR — Eggen & Greenstein
• SGD — Solar Geophysical Data
• COHSI — Cambridge OH-Suppression Instrument
• MXRB — Massive X-Ray Binary
• B — Barnard
• VLB — Very Long Baseline
• CAMC — Carlsberg Automatic Meridian Circle
• EMU — Extra-vehicular Mobility Unit
• WCT — Window Correction Table
• GMT — Greenwich Mean Time (now obsolete)
• PEGA — Programs in Extra-Galactic Astronomy
• MMTF — Maryland-Magellan Tunable Filter
• VPO — Virtual Public Observatory
• WFPCII — Replacement For WFPC
• EGP — Extrasolar Giant Planet
• PROPLYD — Protoplanetary Disk
• VSAT — Very Small Angle Tracker
• SLSN-R — radioactively powered SLSNe
• ODX — Occular Dynamic eXperiment
• HKO — Hong Kong Observatory
• IRIS — InfraRed Imaging Surveyor
• CRAF — Committee on Radio Astronomy Frequencies
• NLDP — National Launch Development Program

• URPX — Uranian Ring Plane Crossing
• ECO — Earth crossing object
• WYAS — West Yorkshire Astronomical Society
• CSMA — Committee on the Status of Minorities in Astronomy
• DCB — Design Change Board
• ♆ — Neptune
• WIYN — Wisconsin, Indiana University, Yale University, and NOAO (National Optical Astronomy Observatories) Observatory
• HDF — Hubble Deep Field
• BO — Biological Origin
• TSRS — Trieste Solar Radio System
• MBA — Main-Belt Asteroid
• CMD — Color-Magnitude Diagram
• WTTS — Weak-Line T-Tauri Star
• DRAO — Dominion Radio Astrophysical Observatory
• SH — Super Hot
• UKSA — United Kingdom Space Agency
• NA — Negative Alignment
• DN — Dwarf Novae
• EO — Earth Observatory
• WHDF — William Herschel Deep Field
• CASA — Common Astronomy Software Applications
• WAPP — Wide-base Arecibo Pulsar Processor
• IYA — International Year of Astronomy
• SUSI — Sydney University Stellar Interferometer
• ♇ — Pluto
• PRR — preliminary requirements review
• SRC — Science Research Council (formerly DSIR) (U.K.)
• DMS — Daily Mission Schedule
• TAC — The Astronomy Connection
• OAO — Okayama Astrophysical Observatory
• TAA — Tasmanian Amateur Astronomers
• SET — Science, Engineering and Technology
• MHGL — Mexican Hat Gravitational Lens
• MTL — Mission Time Line
• LWS — Long Wavelength Spectrometer
• MMTO — Multiple Mirror Telescope Observatory
• TC — Test Conductor (Controller)
• FAT — Filtered Array Technology
• LDS — Luyten Double Star
• BHC — Black Hole Candidate
• CVP — Continuously Variable Planetary
• NGC — New General Catalog
• MARS — MOUNTAIN ASTRONOMICAL RESEARCH SECTION
• LMS — Lower Main Sequence
• RS — Resource Scheduler
• LFSA — List of Frequently Seen Acronyms
• EVGA — European VLBI Group for Geodesy and Astrometry
• SWIRE — Spitzer Wide-area InfraRed Extragalactic survey
• SGRA — School of Galactic Radio Astronomy
• SCCCB — Science Computing Configuration Control Board

• RRL — RR Lyrae
• ACIT — Automatic Comet Imaging Telescope
• MPPG — Mars Program Planning Group
• HTFA — High Temperature Flowing Afterglow
• EC — Embedded Cluster
• MPAS — Mornington Peninsula Astronomical Society
• WASP — Wide Angle Search for Planets
• SPD — Science Programs Division
• WUVC — Wezen Updated Variability Catalogue
• SZA — Sunyaev-Zeldovich Array
• LTT — Luyten Two-Tenths
• MLPS — Mid-Latitude Plasma Structuring
• SDAS — Scarborough And District Astronomy Society
• NEAF — North East Astronomy Form
• SLOWPOKES — Sloan Low-mass Wide Pairs of Kinematically Equivalent Stars
• VOS — Virtual Operating System
• ARTEMIS — Advanced Relay TEchnology MISsion
• NIR — Near Infrared Reflection
• VERA — VLBI Exploration of Radio Astrometry
• LADC — Longitudinal Atmospheric Dispersion Compensator
• STSWG — Space Telescope Science Working Group
• URO — Unidentified Red Object
• VMO — Valley of the Moon Observatory
• IUESIPS — Iue Spectral Image Processing System
• CGSS — Catalogue of Galactic S Stars
• FIMS — Fors Instrumental Mask Simulator
• SEP — Solar Energetic Particle
• BLAST — Balloon-borne Large Aperture Submillimeter Telescope
• NCP — North Celestial Pole
• SPIRIT — SPace InfraRed Imaging Telescope
• CAL — Casual Astronomy League
• EMB — Earth Moon Barycenter
• OZ — Objective Zenith
• SCO — Software Change Order
• VRAM — Virtual Random Access Memory
• RFO — Robert Ferguson Observatory
• UESAC — Uppsala-ESO Survey of Asteroids and Comets
• PLS — Palomar-Leiden Survey
• HGD — Hot Gas Discharge
• COD — Carbon Oxygen Dwarf
• PMS — Pre–Main Sequence
• FFI — Full Frame Image
• IFO — Identified Flying Object (see Also UFO)
• CIDA — Cometary Interplanetary Dust Analyzer
• CRTS — Catalina Real-Time Transient Survey
• BCEP — Beta CEPhei
• LTP — Lunar Transient Phenomenon
• VPO — VISTA Project Office
• MOST — Molonglo Observatory Synthesis Telescope
• EME — Earth-to-Moon-to-Earth

• ENACS — ESO Nearby Abell Cluster Survey
• PCAS — Planet-Crossing Asteroid Survey
• JKT — Jacobus Kapteyn Telescope
• OHD — Observational Hubble-parameter Data
• GRB(S) — gamma ray burst(s)
• UCLAP — University of California Los Angeles - Astronomical Papers
• SARA — Sub-KeV Atom Reflection Analyzer
• PVTEL — PV TELescopii
• IETI — Invitation to ExtraTerrestrial Intelligence
• SETG — Search for Extra-Terrestrial Genomes
• EPOS — European Project on the Sun
• CIO — Catalog of Infrared Observations
• LS — List Star
• SGC — Southern Galaxy Catalogue
• SIPS — Spectral Image Processing System
• RSDP — Routine Science Data Processing
• EPD — Expected Planetary Differences
• NGST — Next Generation Space Telescope
• SUPARCO — Space & Uppar Atmosphere Research Commission
• ALIS — Airborne Laser Isotope Spectrometer
• EB — Eclipsing Beta
• LAL — LALande
• CSI — Catalog of Stellar Identification
• LST — Large Stellar Telescope
• RTA — Real Time Activity
• TESS — Transiting Exoplanet Survey Satellite