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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
• MM — Millimeter
• COBRAS-SAMBA — Cosmic Background Radiation Anisotropy Satellite / Satellite for Measurement of Background Anisotrop
• FTP — File Transfer Protocol
• LUNNO — Lunar Upper Navigation Nacelle Orb
• NHLBI — National Heart, Lung, and Blood Institute
• ROM — Read-Only Memory
• LASER — Light Amplification By Stimulated Emission Of Radiation (cf. Maser)
• ASAP — As Soon As Possible (pronounced AY-sap)
• CPU — Central Processing Unit
• WWW — World Wide Web
• A — Ampere
• ANSI — American National Standards Institute, Inc.
• ICD — Interface Control Document
• WHO — World Health Organization
• CDR — Critical Design Review
• RF — Radio Frequency
• AIAA — American Institute of Aeronautics and Astronautics, Inc.
• BTW — By The Way
• CSA — Canadian Space Agency
• UFO — Unidentified Flying Object
• SAR — Search And Rescue
• QC — Quality Control
• ISO — International Organization for Standardization
• AFAIK — As Far As I Know
• ESA — European Space Agency
• CCB — Configuration Control Board
• ELV — Expendable Launch Vehicle
• EOF — End Of File
• PDR — Preliminary Design Review
• IP — Internet Protocol
• CD — Compact Disc
• EEO — Equal Employment Opportunity
• FYI — For Your Information
• CY — Calendar Year
• A&AT — Astronomical and Astrophysical Transactions
• MOA — Memorandum Of Agreement
• CBO — Congressional Budget Office
• AU — Astronomical Unit
• MB — Megabyte
• CV — Curriculum Vitae
• HEAO — High Energy Astronomy Observatory
• NFS — Network File System

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

• KG — Kilogram
• DCC — Document Control Center
• I/O — Input/Output
• VHF — Very High Frequency
• JAAVSO — Journal of the American Association of Variable Star Observers
• FOS — Faint Object Spectrograph
• CM — Centimeter
• PAH — Polycyclic Aromatic Hydrocarbon
• SIG — Special Interest Group
• LTE — Local Thermodynamic Equilibrium
• CAP — College of American Pathologists
• GO — General Observer
• MTBF — Mean Time Before Failure
• OTA — Optical Telescope Assembly
• NM — Nanometer
• ISO — Infrared Space Observatory
• CM — Configuration Management
• SQA — Software Quality Assurance
• MRB — Material Review Board
• GMP — Good Manufacturing Practice
• ASCII — American National Standard Code for Information Interchange
• FIFO — First In, First Out
• FD — Flight Day
• WAXD — Wide-Angle X-Ray Diffraction
• BMA — British Medical Association
• SRL — Space Radar Laboratory
• APS — American Physical Society
• CEN — Committee European de Normalisation
• ISRO — Indian Space Research Organisation
• GPS — Global Positioning System (ex-NAVSTAR)
• A/N — Alphanumeric
• M — Meter
• N/A — Not Applicable
• CRO — Contract Research Organization
• UHF — Ultra High Frequency (300-3000 MHz; 1m-10cm)
• CHSAJ — Chinese Society of Astronautics Journal
• GMT — Giant Magellan Telescope
• SAS — Small Astronomy Satellite
• RAM — random-access memory
• FTA — Fault Tree Analysis
• GR — General Relativity
• AMU — Atomic Mass Unit
• CHJAA — Chinese Journal of Astronomy and Astrophysics
• URL — Universal Resource Locator
• FFT — Fast Fourier Transform
• AJ — Astronomical Journal
• TV — Television
• SCA — Shuttle Carrier Aircraft
• CEMDA — Celestial Mechanics and Dynamical Astronomy
• LOE — Level Of Effort

• SISEX — Shuttle Imaging Spectrometer Experiment
• BASD — Ball Aerospace Systems Division
• IRB — Institutional Review Board
• LOR — Lunar Orbit Rendezvous
• BHB — Black Hole Bang
• B-V — Binary - Variable star
• NCCLS — National Committee for Clinical Laboratory Standards
• ZAND — Z ANDromedae
• MSFC — Marshall Space Flight Center (Huntsville AL)
• ADF — Astrophysics Data Facility
• EU — European Union (1994; formerly referred to as the EEC or EC)
• HCFA — Health Care Financing Administration
• ADA&A — Advances in Astronomy and Astrophysics
• DC — Direct Current
• SDD — Software Design Document
• UCL — University College London
• LOI — Lunar Orbit Insertion
• HV — High Voltage
• A&A — Astronomy and Astrophysics
• R&QA — Reliability & Quality Assurance
• DAR — Defense Acquisition Regulation
• LEO — Low Earth Orbit (satellite communications)
• SPR — Software Problem Report
• ANS — Astronomical Netherlands Satellite
• ADIL — Astronomy Data Image Library
• M&PS — Meteoritics and Planetary Science
• CSTC — Consolidated Space Test Center
• CRF — Case Report Form
• TBD — To Be Determined
• CW — Clockwise
• GEM — Giotto Extended Mission
• ISS — International Space Station
• SF — Science Fiction
• A&G — Astronomy and Geophysics
• ATO — Abort To Orbit
• ☿ — Mercury
• P&SS — Planetary and Space Science
• DUNRE — Dunsink Observatory Reprints
• AOCS — Attitude and Orbit Control System
• SRM — Solid Rocket Motor
• PPO — Preferred provider organization
• BCD — Binary-Coded Decimal
• LOS — Line Of Sight
• RFI — Radio Frequency Interference
• NSF — National Sanitation Foundation
• DFRC — Dryden Flight Research Center
• MADOO — Madras Observatory Astronomical Observations
• NAI — No Action Indicated (Most Favorable Food & Drug Administration Post-inspection Classification)
• PR — Problem Report
• NSA — National Security Agency

• ALS — Advanced Launch System
• MHZ — Megahertz (Megacycles Per Second)
• P/SOS — Payload/Spacecraft Operations Simulator
• AHA — American Hospital Association
• DRS — Data Relay Satellite
• FORTRAN — FORmula TRANslation (a computer language)
• CCAFS — Cape Canaveral Air Force Station, an air force base in Florida where NASA launches satellites from.
• NASP — National Aerospace Plane
• PIFOV — Planet In Field Of View
• ESAJ — European Space Agency Journal
• HF — High Frequency
• P-E — Perkin-Elmer Corporation
• CRT — Cathode Ray Tube (type of TV)
• ZEPLIN — ZonEd Proportional scintillation in LIquid Noble gases
• MS — Millisecond
• COMSP — Commercial Space
• HOPPS — Hospital Outpatient Prospective Payment System
• LM — Lunar Module
• JSC — Johnson Space Center (Houston, TX)
• SME — Solar Mesosphere Explorer
• NEC — National Electrical Code
• NIOSH — National Institute for Occupational Safety and Health
• CDM — Cold Dark Matter
• EDO — Extended Duration Orbiter
• ST — Star Tracker
• BUBES — Bulletin of the University of Besancon Observatory
• F&CRE — Flower and Cook Observatory Reprints
• SI — Scientific Investigation
• ST — Space Telescope
• CMB — Cosmic Microwave Background
• DOD — United States Department of Defense
• AAMI — Association for the Advancement of Medical Instrumentation
• PDP — Postinsertion Deorbit Preparation
• AARP — American Association of Retired Persons
• BER — Bit-Error Rate
• ALEXIS — Array of Low Energy X-ray Imaging Sensors
• BAICZ — Bulletin of the Astronomical Institutes of Czechoslovakia
• CHJSS — Chinese Journal of Space Science
• FU — Flight Unit
• FAQ — Frequently Asked Questions (sometimes Pronounced Fak)
• CASJ — Canadian Aeronautics and Space Journal
• K — Kilo-
• AA&AA — Astronomy and Astrophysics Abstracts Heidelberg
• JPL — Jet Propulsion Laboratory (California Institute of Technology) (NASA)
• WG — Working Group
• MIS — Management Information System (OSHA)
• WP — Work Package
• JSAR — Journal of Space Astronomy Research
• CHSST — Chinese Space Science Technology
• STR — Software Test Report

• COBE — Cosmic Background Explorer Satellite (NASA)
• SAAOC — South African Astronomical Observatory Circular
• E-ELT — European Extremely Large Telescope
• QA — Center for Quality Assurance in International Education
• ND — NASA Document
• LEM — Lunar Excursion Module
• MOSPO — Mobile Satellite Photometric Observatory
• TES — Thermal Emission Spectrometer
• ASC — Ambulatory Surgery Center
• DFRF — Dryden Flight Research Facility
• FY — Fiscal Year
• ABBOO — Abbadia Observatory Observations
• ERBS — Earth Radiation Budget Satellite
• IUS — Inertial UPper Stage (was Interim UPper Stage)
• XEUS — X-Ray Evolving Universe Spectroscopy Mission
• AAAS — American Association for the Advancement of Science
• APO — Apache Point Observatory
• DSCS — U.S. Defense Satellite Communications System
• ECSS — European Cooperation for Space Standardization
• FDA — Food Drug Administration
• CFR — Code of Federal Regulations
• BBF — Bursty Bulk Flow
• SVD — Singular Value Decomposition
• DMA — direct memory access (computer term)
• FITS — Flexible Image Transport System
• MOL — Manned Orbiting Laboratory
• DEC — Declination
• D — Diameter
• LARC — Langley Research Center (NASA)
• RAS — Royal Astronomical Society
• DUNOP — Dunsink Observatory Publications
• PABEI — Progress in Astronomy
• LCC — Launch Control Center (KSC)
• RPM — Revolutions Per Minute, (Rotations Per Minute)
• JOP — Jupiter Orbiter Probe
• ASTRA — Advanced Star Tracker
• JANSC — Journal of Astronautical Sciences
• QJRAS — Quarterly Journal of the Royal Astronomical Society
• NORAD — North American Air Defense (Command)
• NAM — National Association of Manufacturers
• IEC — International Electrotechnical Commission
• NSP — NASA Support Plan
• DC — Delta Clipper
• AAMC — American Association of Medical Colleges
• OS — Operating System
• SNR — Signal-to-Noise Ratio
• JALPO — Journal of the Association of Lunar & Planetary Observers
• DOE — United States Department of Energy (government)
• RTLS — Return To Launch Site
• ASRM — Advanced Solid Rocket Motor

• IAU — International Astronomical Union
• CPI — Continuous Process Improvement
• SOW — Statement Of Work
• ADC — Analog-Digital Converter
• JASEG — Journal of the Astronomical Society of Egypt
• D — Director
• OIG — Office of Inspector General
• IR — Infrared
• PM — Pressurized Module
• TM — Telemetry
• KSC — John F. Kennedy Space Center
• DAOAR — Dominion Astrophysical Observatory Annual Report
• SSID1 — Soviet Space Insertion Diverter One
• CHIME — College of Healthcare Information Management Executives
• FTE — Full-Time Employee
• NAS — United States National Academy of Sciences
• IPA — Individual Practice Association
• HSP — High Speed Photometer
• UT — University of Texas
• O&M — Operation and Maintenance
• EUVE — Extreme Ultraviolet Explorer (NASA Satellite)
• DOMSAT — Domestic Communications Satellite System
• LED — law enforcement desk; light emitting diode
• AW&ST — Aviation Week & Space Technology
• CASJQ — Canadian Aeronautics and Space Journal Quarter
• SSI — Space Studies Institute
• ESDAC — European Space Data Center
• FRR — Flight Readiness Review
• AO — Adaptive Optics
• BH — Black Hole
• BNSC — British National Space Centre
• MCO — Mars Climate Orbiter
• ROI — Return on Investment
• ARMOL — Armagh Observatory Leaflet
• PALLO — Publications of the Allegheny Observatory of the University of Pittsburgh
• SA — Solar Array
• DD — Deputy Director
• CAPS — Cassini Plasma Spectrometer
• VLF — Very Low Frequency
• N — Nitrogen
• SLAR — Side-Looking Airborne Radar
• SSME — Space Shuttle Main Engine
• USP — United States Pharmacopeia
• JAPAS — Journal of Astrophysics and Astronomy Supplement
• NASDA — National Space Development Agency of Japan
• AT — Acceptance Test
• NASM — National Air and Space Museum
• BASBR — Bulletin of the Astronomical Society of Brazil
• PDS — Planetary Data System
• AFSD — Air Force Space Division

• SST — States Supersonic Transport
• NRC — National Response Center
• ASCA — Advanced Satellite for Cosmology & Astrophysics
• ERS — Earth Resources Satellite
• NIST — National Institute of Standards and Technology
• OMB — Office of Management and Budget (U.S.)
• NOAA — National Oceanic and Atmospheric Administration (US)
• LGA — Low Gain Antenna
• HZ — cycles per second (hertz)
• PHP — Planetary Horizontal Platform
• TNM — The New Millenium
• CRC — Contrôle de Redondance Cyclique (French: Cyclic Redundancy Check)
• AMA — American Medical Association
• HD — Hilary Duff
• BPS — bits per second
• MMU — Manned Maneuvering Unit
• ESRO — European Space Research Organisation
• ROSAT — Roentgen Satellite
• JILA — Joint Institute for Laboratory Astrophysics
• PADEU — Publications of the Astronomy Deparment of the Eotvos Lorand University
• LRB — Liquid Rocket Booster
• SPARTAN — Shuttle Pointed Autonomous Research Tool for Astronomy
• N — Newton
• MMS — Module Management System
• SUMS — Shuttle Upper Atmosphere Mass Spectrometer
• DSN — Deep Space Network - network of large antennas and communication facilities.
• GSFC — Goddard Space Flight Center (Greenbelt, MD)
• EU — Expanded Universe
• IDE — Investigational Device Exemption
• SDR — System Design Review
• R/T — Real Time
• SIM — Simulator
• COTS — Commercial Off the Shelf Software
• UV — Ultraviolet (Light)
• CRAF — Comet Rendezvous/Asteroid Fly-by
• 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.
• AMPS — Atmospheric Magnetospheric Plasma System
• RADAR — RAdio Detection And Ranging
• VATOP — Vatican Observatory Publications
• OV — Orbital Vehicle
• MMDA — Michigan Medical Device Association
• WISE — Wide-Field Infrared Survey Explorer
• ACMAN — Astronomical Contributions from the University of Manchester
• CITECH — Center for Information on Technology in Healthcare
• RSA — Russian Space Agency
• ESTEC — European Space Research and Technology Centre
• SARA — Society of Amateur Radio Astronomers
• MTPE — Mission To Planet Earth
• ABHI — Association of British Health-Care Industries
• AREG — Astronomical Register

• MOC — Mars Observer Camera
• HQ — Headquarters (HDQ Preferred)
• NASAS — NASA Special Publication
• ADFRF — Ames-Dryden Flight Research Facility
• S/N — Serial Number
• ROSA — Romanian Space Agency
• CTE — Charge Transfer Efficiency
• AP — Array Processor
• LMSS — Lunar Mapping and Survey System
• SADE-1 — Solar Array Deploy Electronics-11
• GTO — Geostationary Transfer Orbit
• LPS — Launch Processing System
• CCTV — Closed Circuit Television
• MEM — Meteoroid Exposure Module
• OPF — Orbiter Processing Facility
• NSI — NASA Science Internet
• WASOA — Washburn Observatory Astrophysics
• IUE — International Ultraviolet Explorer
• RTG — Radioisotope Thermoelectric Generator
• WFF — Wallops Flight Facility
• AOA — Angle Of Attack
• IEEE — Institute of Electrical and Electronic Engineers, Inc.
• MGMA — Medical Group Management Association
• DMERC — Durable Medical Equipment Regional Carrier
• CHIPS — Cosmic Hot Interstellar Plasma Spectrometer
• SAO — Smithsonian Astrophysical Observatory
• MFPE — Mission from Planet Earth
• HR — HUMAN RESOURCES
• SDAC — Solar Data Analysis Center
• NASAR — NASA Reference Publication
• PHASP — Physics and Astrophysics from Spacelab
• COSTAR — Corrective Optics Space Telescope Axial Replacement
• MADOB — Madras Observatory Observations
• PCM — Pulse-Code Modulation
• MPL — Mars Polar Lander
• APL — Applied Physics Laboratory (at Johns Hopkins)
• AACCS — Analytical Approach to Candidate Constellation Selection
• KHZ — kilohertz (1000 cycles per second)
• ANEDI — Annals of the Royal Observatory, Edinburgh
• TLA — Three Letter Abbreviation
• PRAES — Progress in Aerospace Sciences
• PHRMA — Pharmaceutical Research and Manufacturers of America (formerly PMA, Pharmaceutical Manufacturers Association)
• OSCAR — Orbiting Satellite Carrying Amateur Radio
• APJ — Astrophysical Journal
• LCROSS — Lunar CRater Observation and Sensing Satellite
• APM — Attached Pressurized Module (a.k.a. Columbus)
• EOL — End Of Line
• ACICH — Astronomical Circular
• GAO — Government Accountability Office [formerly the General Accounting Office]
• PSI — Pounds Per Square Inch (Static Pressure)

• NBS — National Bureau of Standards (US)
• JEM — Japanese Experiment Module
• LANL — Los Alamos National Laboratory
• CDSF — Commercially Developed Space Facility
• DSMB — Data Safety Monitoring Board
• ATV — Automated Transfer Vehicle
• CMP — Competitive Medical Plan
• ISAS — Institute of Space and Astronautical Sciences (Japan)
• ESRIN — European Space Research Institute
• ASTD — Advanced Space Technology Division
• UT — Universal Time
• JD — Julian Date
• POEM — Polar-Orbiting Earth Mission
• 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
• DSS — Deep Space Station
• MHD — Magnetohydrodynamic
• DIST — Distance
• NCOS — National Commission on Space
• MOA — Microlensing Observations in Astrophysics
• UTC — Coordinated Universal Time
• CEMEC — Celestial Mechanics
• DBMS — Data Base Management System
• NASAC — NASA Conference Publication
• NASAL — NASA Circular Letter
• SIM — Space Interferometry Mission
• 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
• RCS — Reaction Control System/Subsystem
• SSTO — Single-Stage-to-Orbit
• FHST — fixed-head star tracker
• CIRCE — Confusion-limited Infrared Cosmology Explorer
• CM — Command Module
• GIF — Graphic Interchange Format
• COKON — Commmunications of the Konkoly Observatory Hungary
• OSS — Office of Space Sciences
• MVM — Mariner Venus/Mercury
• ITU — Infrared Telescope Unit
• APJS — Astrophysical Journal Supplement Series
• NRT — near real time
• NEMA — National Electric Manufacturer's Association
• CASE — computer-automated software engineering
• EBCI — Eclipsing Binaries Circulars
• ASPP — Atmospheric and Space Plasma Physics
• EOY — End-Of-Year
• PPCAS — Publication of the Pomona College Astronomical Society
• ESOC — European Space Operations Center
• MDI — Michelson Doppler Imager
• RA — Right Ascension
• LF — Luminosity Function
• GSC — Guide Star Catalog
• AFSCN — Air Force Space Command network

• SEOS — Synchronous Earth Observation Satellite
• CDT — Connaissance Des Temps
• MIT — Massachusetts Institute of Technology (U.S.)
• 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)
• ASHP — American Society of Hospital Pharmacists
• FIRSSE — Far Infrared Sky Survey Experiment
• PM — Project Manager
• AGB — Asymptotic Giant Branch
• CQGRS — Classical and Quantum Gravity Supplement
• DUROO — Durham Observatory Observations
• STICA — Space Technology Industrial and Commercial Applications
• DIN — Deutsches Institut für Normung.
• INS — Inertial Navigation System
• IIRC — If I Recall Correctly
• NIH — NATIONAL INSTITUTE OF HEALTH
• GCP — Good Clinical Practice
• FTC — Federal Trade Commission (U.S.)
• RISC — Reduced Instruction Set Computer
• ADSPR — Advances in Space Research
• UL — Underwriters Laboratory
• COWRO — Contributions from the Wroclaw Astronomical Observatory
• SPVW — Spaceview
• CON — Certificate Of Need
• MSX — Midcourse Space Experiment
• GMT — Greenwich Mean Time (Zulu)
• CG — Center of Gravity (DXS)
• GPC — General Purpose Computer
• AIRCO — Air et Cosmos
• ASTHE — Astronomical Herald
• Z — Zenith
• SNII — SuperNova of Type II
• MMT — Multiple Mirror Telescope
• RVU — Relative Value Unit
• RSN — Real Soon Now [which may be a long time coming]
• AG — Astronomische Gesellschaft
• CASS — Center for Advanced Space Studies
• MMA — Minnesota Medical Association
• SPART — Space Research and Technology
• CRB — Change Review Board
• FAT — File Allocation Table
• AXAF — Advanced X-Ray Astrophysics Facility
• AREPS — Annual Review of Earth and Planetary Sciences
• GE — General Electric American Communications Inc.
• SAPS — Sub Auroral Polarization Streams
• NIST — National Institute of Standards & Technology (US)
• PASAU — Proceedings of the Astronomical Society of Australia
• FS — Far Side
• RAZEL — Range, Azimuth and Elevation
• NASO — North American Space Operations
• COCAM — Contributions from the Cambridge Observatory England

• RMS — root mean square (preferred over "RMS")
• ASI — Agenzia Spaziale Italiana
• MECO — Main Engine Cutoff
• NASA — National Aeronautics and Space Administration (US)
• DYERE — Dyer Observatory Reprints
• ASPRV — Astrophysics and Space Physics Reviews
• IMBH — Intermediate-Mass Black Hole
• OSSA — Office of Space Sciences and Applications
• FAC — Facilities
• ATDRS — Advanced Tracking and Data Relay Satellite
• PPARC — Particle Physics and Astronomy Research Council
• AURA — Association of Universities for Research in Astronomy, Inc.
• MHW — Ministry of Health and Welfare
• FDR — Final Design Review
• PR — Public Relations
• RALPH — Reduction and Acquisition of Lunar Pulse Heights
• JASS — Journal of Astronomy and Space Sciences
• AEXPR — Astronomy Express
• MMI — Man-Machine Interface
• PN — Planetary Nebula
• LAMOST — Large sky Area Multi-Object fiber Spectroscopic Telescope
• JRASC — Journal of the Royal Astronomical Society of Canada
• BTOK — Bulletin of the Tokyo Astronomical Observatory
• SPP — Solar Physics Payload
• SRB — Solid Rocket Boosters
• CV — Cataclysmic Variable
• XRD — X-Ray Diffraction
• LASCO — Large Angle Spectrometric Coronograph
• MSFN — Manned Space Flight Network
• KB — Kilobyte: One thousand and twenty-four bytes kbps kilo bit per second
• SLC — Space Launch Complex
• BAO — Beijing Astronomical Observatory
• ADEPS — Advances in Earth and Planetary Sciences
• EC — European Community
• PCA — Proportional Counter Array
• ROTFL — Roll On The Floor Laughing
• MVI — Microgravity Vestibular Investigation
• WET — Whole Earth Telescope
• SPMAR — Space Markets
• SPRBU — Space Research Bulgaria
• JAPOA — Japan Amateur Photoelectric Observers Association
• CCD — Charge Coupled Device - a device for the movement of electrical charge.
• AAT — Anglo Australian Telescope
• PHA — Physics And Astronomy
• PCARS — Publication of COMU Astrophysics Research Center
• ZAHB — Zero-Age Horizontal Branch
• ADCBU — Astronomical Data Center Bulletin
• COLPL — Communications of the Lunar and Planetary Laboratory
• DEACO — Dearborn Observatory Contributions
• ARC — Ames Research Center (NASA)

• ICE — International Cometary Explorer
• LOX — Liquid Oxygen
• LOD — Length of Day
• OSSE — Oriented Scintillation Spectrometer Experiment
• TEM — Transverse Electromagnetic
• LLO — Low Lunar Orbit
• EAA — Encyclopedia of Astronomy and Astrophysics
• ANMN — Antarctic Meteorite Newsletter
• SAR — synthetic aperture radar (satellite)
• CFF — Columbus Free Flyer
• MITI — Ministry of International Trade & Industry (Japan)
• SR — Special Relativity
• PROM — Programmable Read-Only Memory
• UPS — Uninterruptible Power Supply
• M&R — Maintenance and Refurbishment
• AMPS — Atmosphere, Magnetosphere & Plasmas in Space
• PDR — Photo Dissociation Region
• CGRO — Compton Gamma-Ray Observatory
• APH — Astroparticle Physics
• ND — Neutral Density
• OVS — Observation of Variable Stars
• DUDOR — Dudley Observatory Reports
• PROE — Publications of the Royal Observatory of Edinburgh
• WAIS — Wide Area Information Server
• VMS — Virtual Memory System
• CQGRA — Classical and Quantum Gravity
• RQQ — Radio Quiet Quasar
• CDRH — Center for Devices and Radiological Health (Food & Drug Administration)
• LEGRI — Low Energy Gamma-Ray Imager
• CEA — Center for EUV Astrophysics
• VAI — Voluntary Action Indicated (Food & Drug Administration postaudit inspection classification)
• MELOO — Melbourne Observatory Observations
• OAI — Official Action Indicated (serious Food & Drug Administration post-inspection classification)
• RFNA — Red Fuming Nitric Acid
• GHZ — Gigahertz
• JAMA — Journal of the American Medical Association
• SFR — Star Formation Rate
• MM — Memory Module
• GOES — Geostationary Operational Environmental Satellite
• TCPA — Time for Closest Point of Approach
• LSR — Local Standard of Rest
• AOA — Abort Once Around (shuttle Abort Plan)
• PVO — Pioneer Venus Orbiter
• POMIC — Publications of Michigan Observatory
• APOD — Astronomy Picture of the Day
• CNB — Cosmic Neutrino Background
• PRCO — Publications of the Riverview College Observatory
• WD — White Dwarf
• TMT — Thirty-Meter Telescope
• SSBUV — shuttle solar backscatter ultraviolet (radiometer)

• ASTL — Astronomy Letters
• ANLUN — Annals of the Observatory of Lund
• ESIS — ESA Space Information Systems
• CFA — Harvard-Smithsonian Center for Astrophysics, USA
• FCPH — Fundamentals of Cosmic Physics
• EDT — Eastern Daylight Time
• USGS — United States Geological Survey (DOI)
• HIRA — Health Industry Representatives Association
• TAC — Telescope Allocation Committee
• EIA — Extended Interaction Amplifier
• ONRAS — Occasional Notes of the Royal Astronomical Society
• ESTP — European Space Technology Platform
• JBAS — Journal of the British Astronomical Society
• ARISTOTELES — Applications and Research Involving Space Technologies Observing the Earth's Field from Low Earth Orbiting Satellite
• ESOSP — European Southern Observatory Scientific Preprints
• BASI — Bulletin of the Astronomical Society of India
• BLOB — Binary Large Object
• ADS — Astrophysics Data Service
• MECO — Magnetospheric Eternally Collapsing Object
• NIZRE — Nizamiah Observatory Reprints
• PA — Popular Astronomy
• BAA — British Astronomical Association
• AMS — American Meteor Society
• NSSDC — National Space Science Data Center (Greenbelt, MD)
• ANHAR — Annals of Harvard College Observatory
• VAB — Vertical Assembly Building
• ACRV — Assured Crew Return Vehicle
• NRL — Naval Research Laboratory
• JBAA — Journal of the British Astronomical Association
• COSRE — Cosmic Research
• NMI — Nautical Mile
• LBNL — Lawrence Berkeley National Laboratory (US)
• ORIG — Origin
• OSHA — Occupational Safety and Health Act (1970)
• ALPOJ — Association of Lunar and Planetary Observers Journal
• COROT — Convection Rotation and Planetary Transits
• Z — Zulu (Greenwich mean time)
• ORROE — Occasional Reports of the Royal Observatory, Edinburgh
• BPSK — binary phase shift keying
• NDA — New Drug Application
• TAG — Technical Advisory Group for Biological Control Agents of Weeds
• ANDUD — Annals of the Dudley Observatory
• ISU — International Space University
• VO — Virtual Observatory
• PLICO — Publications of Lick Observatory
• ANLOW — Annals of the Lowell Observatory
• G — Gravity
• POS — Point of Service Plan
• CHARA — Center for High Angular Resolution Astronomy
• OTV — Orbital Transfer Vehicle

• PCS — Pointing Control System
• GRC — Glenn Research Center
• COVVO — Contributions of the Van Vleck Observatory
• COMAP — Comments on Astrophysics
• BKOAS — Bulletin of Korean Astronomical Society
• MNRAS — Monthly Notices of the Royal Astronomical Society
• HTH — Hope This Helps. Email abbreviation when replying to requests. Potentially counter-productive if the recipient doesn't understand what it means...
• SNAP — Supernova / Acceleration Probe
• ESOAR — European Southern Observatory Annual Reports
• ESABU — European Space Agency Bulletin
• HP — Hewlett Packard's
• CIBAA — Circular of the British Astronomical Association
• NAFTA — North American Free Trade Agreement
• CRPL — Cosmic Ray Physics Laboratory
• JDSO — Journal of Double Star Observations
• PDREO — Publications of the Dresden Observatory
• LH — Liquid Hydrogen
• OPM — Outer Planet Mission
• ETLA — Extended Three Letter Acronym
• LAT — Large Area Telescope
• ANCAP — Annals of the Cape Observatory
• COBRN — Contributions of the Public Observatory and Planetarium in Brno
• MCC — Mission Control Center (JSC)
• KM — Kilometer (1,000 meters)
• PMUNO — Publications of the Munich Observatory
• WMO — World Meteorological Organization (ICSU)
• PASJ — Publications of the Astronomical Society of Japan
• EBS — Electron Bombarded Silicon
• PHS — Public Health Service (U.S.)
• CL — Command Language
• GPE — Gravitational Potential Energy
• AE — Adverse Event
• VLSI — Very-Large-Scale Integration
• OAP — Odessa Astronomical Publications
• A&AS — Astronomy and Astrophysics Supplement Series
• ANDEA — Annales of the Dearborn Observatory
• ASA — Astronomical Society Of The Atlantic
• MCD — Minimum Cost Design
• JAHH — Journal of Astronomical History and Heritage
• ASM — American Society for Microbiology
• CDC — Centers for Disease Control
• EAPSNET — East-Asian Planet Search Network
• AREP — Astronomy Reports
• LAD-C — Large Area Debris Collector
• ISO 14155 — Current Widely Accepted Standard
• JAXA — Japan Aerospace Exploration System
• COLIC — Contributions of Lick Observatory
• MDD — Medical Device Directive
• LASS — large-amplitude space simulator
• CHA&A — Chinese Astronomy and Astrophysics

• PASA — Publications of the Astronomical Society of Australia
• ASSU — Annual Scientific Supplement to Urania
• HHS — Health and Human Services Department
• GLOMR — Global Low-Orbiting Message Relay
• LAN — Local Apparent Noon
• COBOS — Contributions from the Bosscha Observervatory
• ADVAMED — Advanced Medical Technology Association
• E&S — Earth and Space
• IRAJ — Irish Astronomical Journal
• TTA — Time to Apogee
• MRSR — Mars Rover Sample Return
• F — Degrees Fahrenheit
• TOMS — Total Ozone Mapping Spectrometer (satellite Instrument)
• BSI — British Standards Institution
• RAE — Radio Astronomy Explorer
• ESPI — European Space Policy Institute
• PSC — Point Source Catalog
• ASMT — American Society for Medical Technology
• IFA — Institute for Astronomy
• STO — Solar Terrestrial Observatory
• DSSN — Delta Scuti Star Newsletter
• PAM — Payload Assist Module
• COARM — Contributions from the Armagh Observatory
• COASP — Comments on Astrophysics and Space Physics
• MEV — Mars Excursion Vehicle
• AUJPA — Australian Journal of Physics Astrophysical Supplement
• MWOAR — Mount Wilson Observatory Annual Report
• SM — Secondary Mirror
• JAD — Journal of Astronomical Data
• JCAP — Journal of Cosmology and Astro-Particle Physics
• IUEEN — IUE ESA Newsletter
• CDS — Coronal Diagnostic Spectrometer
• LR — Long Radius
• PAAS — Publications of the American Astronomical Society
• MASER — microwave amplification by stimulated emission of radiation
• BBXRT — Broadband XRay Telescope
• PNAOJ — Publications of the National Astronomical Observatory of Japan
• MTC — Man-Tended Capability
• ISSRT — Israel Space Research and Technology Information Bulletin
• BOD — Board of Directors (Budget)
• AMIA — The American Medical Informatics Association
• CPAF — Cost Plus Award Fee (Type of Contract)
• PLAST — Planetary Astronomy
• ASQ — Alpha System Qualification
• DDCMP — Digital Data Communications Message Protocol
• COSKA — Contributions of the Astronomical Observatory Skalnate Pleso
• TPF — Terrestrial Planet Finder
• TV — Thermal Vacuum
• MERIS — Medium Resolution Imaging Spectrometer
• CMA — Chemical Manufacturers Association

• FAHS — Federation of American Health Systems
• MS — Master Schedule
• SOT — Solar Optical Telescope
• CATS — Cheap Access to Space
• PMANO — Publications of the Manila Observatory
• MDS — Medium Deep Survey
• CIUO — Circular of the Union Observatory Johannesburg
• JASAC — Japan Astronomical Study Association Circulars
• AAOPR — Anglo-Australian Observatory Epping Preprint
• CME — Coronal Mass Ejection (usually Sun)
• BCRAO — Bulletin Crimean Astrophysical Observatory
• JIMO — Journal of the International Meteor Organization
• BPI — bits per inch
• K — Kilogram
• CYSF — Cape York Space Facility
• JBRE — Jodrell Bank Reprints
• AACC — American Association for Clinical Chemists
• OG — Original Gravity
• PC — Planetary Camera
• LBLRR — LBL Research Review
• AR — Active Region
• SST — Spectroscopic Survey Telescope
• DSSC — Deep Space Station Complex
• NSTL — National Space Technology Laboratories (NASA)
• NERVA — Nuclear Engine for Rocket Vehicle Application
• COSSE — Cosmic Search Summer
• AZ — Azimuth
• GHTF — Global Harmonization Task Force
• BAAS — Bulletin of the American Astronomical Society
• IDTF — Independent Diagnostic Testing Facility
• AGU — American Geophysical Union
• SDI — Strategic Defense Initiative
• IRAJS — Irish Astronomical Journal Supplement
• VBR — Variable Bit Rate (ATM)
• COPRE — Copenhagen University Observatory Reprints
• CAMRE — Cambridge Observatories Reprints
• COROE — Communications from the Royal Observatory Edinburgh
• PPN — Proto-Planetary Nebula
• ELT — Extremely Large Telescope
• EXA — Experimental Astronomy
• LM&SS — Lunar Mapping and Scientific Survey
• IPAC — Infrared Processing and Analysis Center
• CPI — characters per inch
• UW — University of Wisconsin
• EEXSC — Earth and Extraterrestrial Sciences
• FWHM — Full Width at Half Maximum
• PAMELA — Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics
• NEEDS — NASA end-to-end data system
• EPS — Encapsulated Postscript
• PERCO — Perkins Observatory Contributions

• CODDO — Communications from the David Dunlap Observatory
• WHT — William Herschel Telescope
• UVS — Ultraviolet Spectrometer
• PGLO — Publications of the Goethe Link Observatory
• ANSAO — Annals of the Astrophysical Observatory of the Smithsonian Institution
• IGM — Intergalactic Medium
• VSOP — VLBI Space Observatory Program
• IQSY — International Quiet Sun Year
• WGPSN — Working Group for Planetary System Nomenclature
• OSTA — Office of Space and Terrestrial Applications (US NASA; now OAST)
• CBER — Center for Biologics Evaluation and Research
• MELAR — Melbourne Observatory Annual Report
• BBT — Big Bang Theory
• MMKMO — Memoirs Of The Kakioka Magnetic Observatory
• LICOB — Lick Observatory Bulletin
• JHAS — Journal for the History of Astronomy Supplement
• JBAN — Jodrell Bank Annals
• ARA&A — Annual Review of Astronomy and Astrophysics
• OBC — Onboard Computer
• ODF — Orbit Determination Facility
• APHA — American Pharmaceutical Association
• SPIRE — Spectral Infrared Rocket Experiment
• SSI — Solid-State Imager
• CU — Calibration Unit
• ESOSR — European Southern Observatory Scientific Report
• PHA — Potentially Hazardous Asteroid
• EGG — Evaporating Gaseous Globule
• ET — External Tank
• K — Kelvin (absolute temperature scale)
• ARCHS — Archaeoastronomy Supplement
• NCI — National Cancer Institute, USA
• OMS — orbital maneuvering system
• JAPA — Journal of Astrophysics and Astronomy
• SO — Space Operations
• E — Earth
• IRAS — Infrared Astronomy Satellite
• OAO — Orbital Astronomical Observatory
• JHA — Journal for the History of Astronomy
• SIMCAT — simulate observations using space catalog
• JASV — Journal of the Astronomical Society of Victoria Melbourne
• JBIS — Journal of the British Interplanetary Society
• JHIT — Joint Healthcare Information Technology Alliance
• JKAS — Journal of Korean Astronomical Society
• ARKOD — Annual Report of the Kodaikanal Observatory
• JAAME — Japanese Association for the Advancement of Medical Equipment
• FRC — Flight Research Center
• S/W — Software
• ISBRV — International Space Business Review
• MASSMEDIC — Massachusetts Medical Device Industry Council
• SEF — Space Environmental Facility

• ICCD — Intensified Charge-Coupled Device
• POMIN — Publications of the Astronomical Observatory University of Minnesota
• AU — Alternate Universe
• COPER — Contributions of Perkins Observatory
• SRAG — Space Radiation Analysis Group
• SHA — Sidereal Hour Angle
• SANS — Stellar Autonomous Navigation System
• PDDO — Publications of the David Dunlap Observatory
• LHA — Local Hour Angle
• IDT — Investigation Definition Team
• NUSTAR — Nuclear Spectroscopic Telescope Array
• NRAOR — National Radio Astronomy Observatory Reprints
• VDU — Video Display Unit
• OEJV — Open European Journal on Variable Stars
• OARE — Orbital Acceleration Research Experiment
• DOY — Day of Year
• NCC — Network Control Center (GSFC)
• TIFF — Tag Image File Format
• EVA — Extra-Vehicular Activity
• PCINO — Publications of the Cincinnati Observatory
• DOH — Department of Health (various countries)
• LBT — Large Binocular Telescope
• PBEIO — Publications of the Beijing Astronomical Observatory
• FDLI — Food and Drug Law Institute
• SIDC — Sunspot Index Data Center
• NABR — National Association for Biomedical Research
• ASC — Agence Spatiale Canadienne
• HRI — High Resolution Imager
• NEWAR — New Astronomy Review
• WR — Western Range
• EUV — Extreme Ultraviolet Vertical
• IDL — Interactive Data Language
• ISY — International Space Year (1992)
• LRSP — Living Reviews in Solar Physics
• SSRMS — Space Station Remote Manipulator System
• SPPOL — Space Policy
• DSP — Defense Support Program
• RSU — Rate Sensor Unit
• DPS — Division for Planetary Sciences
• DG — Data Group
• NASPY — North American Society of Electro Physiology and Pacing
• AVSOM — American Association of Variable Stars Observers Monographs
• ASCRS — American Society of Cataract and Refractive Surgery's
• IUENN — IUE NASA Newsletter
• CIRRIS — Cryogenic Infrared Radiance Instrument for Shuttle
• NOAO — National Optical Astronomy Observatories (Tucson, AZ)
• TPS — Thermal Protection System
• M — Messier
• IRSA — Infrared Science Archive
• CIT — California Institute of Technology (Pasadena, CA)

• CRARE — Cracow Observatory Reprints
• LRO — Lunar Reconnaissance Orbiter
• CCR — Configuration Change Request
• ASAIO — American Society for Artificial Internal Organs
• FSK — Frequency Shift Keying
• BIO — Biotechnology Industry Organization
• RSO — Resident Space Object
• MST — Mean Solar Time
• UPPAN — Uppsala Astronomical Observatory Annals
• TOY — Time of Year
• DMF — Data Management Facility
• LAC — Lockheed Aircraft Corporation
• CNSA — China National Space Administration
• SRD — Software Requirements Document
• NEAR — Near-Earth Asteroid Rendezvous
• FOC — Faint Object Camera
• PSPRO — Publications of the Sproul Observatory
• EGRET — Energetic Gamma Ray Explorer Telescope
• AFGWC — Air Force Global Weather Central (U.S.)
• SPICE — Survey Probe Infrared Celestial Experiment
• RCS — Radar Cross Section
• SDIO — Strategic Defense Initiative 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
• ECS — Environmental Control System (Subsystem)
• CHPA — Consumer Healthcare Products Association
• JAC — Joint Astronomy Centre
• SPIRIT — Spatial Infrared Telescope
• USRA — Universities Space Research Association
• STOMS — Space Telescope Observatory Management System
• STACC — Standard Telemetry And Communications Component
• IU — Interface Unit
• SSPF — Space Station Processing Facility
• HIAA — Health Insurance Association of America
• CMS — Correctional Medical Services
• RSNA — The Radiological Society of North America, Inc.
• BD — Bonner Durchmusterung
• ISEE — International Sun-Earth Explorer
• HCIS — Health Care Information System
• PDUFA — Prescription Drug User Fee Act (1992, U.S.)
• RGB — Red Giant Branch
• BHB — Blue Horizontal Branch
• VTVL — Vertical Takeoff Vertical Landing
• APJL — Astrophysical Journal Letters
• MAFI — Medical Alert Foundation International
• SDO — Scattered Disk Object
• OWL — Overwhelmingly Large Telescope
• NEODYS — Near Earth Objects Dynamic Site
• IPC — Interprocess Communication
• PLANEMO — Planetary Mass Object
• ANOLL — Annals of the Private Observatory of Lucien Libert

• ASSA — Astronomical Society of South Africa
• SCP — Supernova Cosmology Project
• AAONW — Anglo-Australian Observatory Epping Newsletter
• ANTOK — Annals of the Tokyo Astronomical Observatory
• PVVO — Publications of the Van Vleck Observatory
• NCAR — National Center for Atmospheric Research (US)
• GG — Gravity Gradient
• PMC — Permanently Manned Capability (of Space Station)
• OASH — Office of the Assistant Secretary for Health
• S/C — Spacecraft
• GOES — Geostationary Orbiting Environmental Satellite
• CADC — Canadian Astronomy Data Centre
• IAPM — International Association of Medical Prosthesis Manufacturers
• S/N — Signal-to-Noise ratio
• FF — Flat Field
• ID — IDentifier
• HIS — Health Information Systems
• PMT — Photo Multiplier Tube
• JRASN — Journal of the Royal Astronomical Society of New Zealand
• ESO — European Southern Observatory
• HFMA — Healthcare Financial Management Association
• AVSOQ — American Association of Variable Stars Observers Quarterly Reports
• XRT — X-Ray Telescope
• MPS — Mission Planning System
• CBR — Cosmic Background Radiation
• SO/SI — space operations and scientific investigation
• USNO — United States Naval Observatory
• HOTOL — Horizontal Takeoff and Landing Launcher
• BIS — British Interplanetary Society
• TDRSS — Tracking and Data Relay Satellite System
• DCR — Document Change Request
• MOTIF — Maui Optical Tracking and Identification Facility
• STATS — star tracker alignment test set
• ATM — Apollo Telescope Mount (on Skylab)
• AGILE — Astro-rivelatore Gamma a Immagini Leggero
• CLMA — Clinical Laboratory Management Association
• DDORE — David Dunlap Observatory Richmond Hill Reprints
• HST — Hubble Space Telescope
• USPHS — United States Public Health Service
• ROE — Royal Observatory, Edinburgh
• ATC — Absolute Time Command
• DEM — Differential Emission Measure
• SG — Shattered Galaxy (game)
• AAVSO — American Association of Variable Star Observers
• DAO — Dominion Astrophysical Observatory (Victoria, BC, Canada)
• LHEA — Laboratory for High Energy Astrophysics
• RNAOJ — Report of the National Astronomical Observatory of Japan
• ANS — Astro News Service
• SSS — Spinning Sun Sensor
• MITTS — Mobile Igor Tracking Telescope System

• CEAB — Central European Astrophysical Bulletin
• SPOT — Satellite Pour l'Observation de la Terre (France)
• DOAMS — distant-object attitude-measuring system
• POVRO — Publications of the Owens Valley Observatory
• CEV — Crew Exploration Vehicle
• ESAST — European Space Agency Scientific Technical Review
• M&P — Materials and Processes
• EOS — Earth Observing System (U.S.)
• OHP — Observatoire de Haute-Provence
• NCSC — National Council of Senior Citizens
• ISN — International Supernovae Network
• AASPP — Astrononomy and Astrophysics Series
• MOS — Metal Oxide Semiconductor (FET Devices)
• PI — Principle Investigator
• HIMSS — Healthcare Information and Management Systems Society
• IPEM — Institute of Physics and Engineering in Medicine
• ONR — Office of Naval Research (U.S.)
• AUASS — Arab Union for Astronomy and Space Sciences
• AO — announcement of opportunity
• SETI — Search for Extraterrestrial Intelligence
• NAHIT — National Alliance for Health Information Technology
• ADEC — Astrophysics Data Centers Executive Council
• MMH — Monomethyl Hydrazine
• APC — Ambulatory Payment Class
• HIBCC — Health Industry Business Communications Council
• SEM — space environment monitoring
• APPLE — Ariane Passenger Payload Experiment
• EFCS — Earth-fixed coordinate system
• CEC — Commission of the European Communities ;
• CD — Cordoba Durchmusterung
• PLR — Planetary Report
• ECRI — Emergency Care Research Institute
• PA — Position Angle
• FIR — Far Infrared
• IMO — International Meteor Organization
• TEA — Torque Equilibrium Attitude
• PST — Personal Solar Telescope
• ADASS — Astronomical Data Analysis Software and Systems
• SAC — Solar Array Carrier
• RA — Regulatory Affairs
• HRSA — U.S. Health Resources and Services Administration
• LAIRT — Large-Aperture Infrared Telescope
• JCAHO — Joint Committee on the Accreditation of Healthcare Organizations
• ADSAC — Advanced Series in Astrophysics and Cosmology
• CFC — Chloroflourocarbon
• DSMA — Division of Small Manufacturers Assistance
• APINV — Astrophysical Investigations
• FTL — Faster Than Light
• TAC — Time Allocation Committee
• MJD — Modified Julian Date

• PEPI — Physics of the Earth and Planetary Interiors
• CTB — Cargo Transfer Bag
• SEDS — Students for the Exploration and Development of Space
• OHTA — Office of Health Technology Assessment
• VMS — Vertical Motion Simulator
• ROUS — Rodents Of Unusual Size
• MOPH — Ministry of Public Health
• ODB — Operations Data Base
• PROPAC — Prospective Payment Assessment Commission
• ATLAS — ACTIVITIES Atmospheric Laboratory for Applications and Science
• BANS — Bulletin of the Astronomical Institutes of the Netherlands, Supplement Series
• DWE — Doppler Wind Experiment
• MEDEC — Medical Devices Canada
• PSK — Phase Shift Key
• SZA — Solar Zenith Angle
• DSNPR — Deep Space Network Progress Report
• MMAAR — Maria Mitchell Association Annual Report
• MIAA — Medical Industry Association of Australia
• SAC — Saguaro Astronomy Club
• MSSS — Maui Space Surveillance Site
• ETR — Eastern Test Range (ESME Preferred)
• INDA — Investigational New Drug Application
• SI — Science Instrument
• D — Directive
• AVSOA — American Association of Variable Stars Observers Abstracts
• POHEL — Publications of the Astronomical Observatory Helsinki
• MDDI — Medical Device and Diagnostics Industry
• CBI — Confederation of British Industries
• LAPSS — Large-Area Pulse Solar Simulator
• APL&C — Astrophysical Letters Communications
• VVORE — Van Vleck Observatory Reprints
• IES — Institute of Environmental Sciences
• POSS — Palomar Observatory Sky Survey
• UDL — Unique Data Log
• ADU — Astronomical Distance Unit
• TCE — Thermal Control Electronics
• EUDRA — European Drug Regulatory Authorities Network
• MEPAG — Mars Exploration Program Analysis Group
• SUNY — State Universityrsity of New York
• MTPPI — Medical Technology and Practice Patterns Institute
• TOKRE — Tokyo Astronomical Observatory Reprints
• MTSRE — Mount Stromlo Observatory Reprints
• ATEL — Astronomer's Telegram
• UGC — Uppsala General Catalog
• UNOOSA — United Nations Office for Outer Space Affairs
• EPIC — Earth Polychromatic Imaging Camera
• NIR — Near Infrared
• MPO — Mercury Planetary Orbiter
• HZ — Habitable Zone
• HRMS — High Resolution Microwave Survey (SETI, Project Phoenix)

• WIMP — Weakly Interacting Massive Particle
• GLP — Good Laboratory Practice
• SIRTF — Shuttle InfraRed Telescope Facility
• ICD-9-CM — International Classification of Diseases, 9th Edition
• AMANDA — Antarctic Muon And Neutrino Detector Array
• CENELEC — European Committee for Electromechanical Standardisation
• QSO — Quasar|Quasi-Stellar Object
• VDS — Vereinigung der Sternfreunde
• TMC — Taurus Molecular Cloud
• CSA — Canadian Standards Association (like UL)
• CSBN — Committee for Small-Body Nomenclature
• SERC — Science and Engineering Research Council
• MIP — Moon Impact Probe
• CCAS — Cape Canaveral Air Station
• LGM — Little Green Men
• KODOB — Kodaikanal Observatory Bulletins
• NEOIC — Near Earth Object Information Center
• CCR — Cost-Charge Ratio
• MIL-STD — Military Standard
• DH — Data Handling
• LAMMR — large-antenna multichannel microwave radiometer
• LPL — Lunar and Planetary Laboratory
• OPAG — Outer Planets Assessment Group
• SL — Comet Shoemaker-Levy
• ALAMO — Automated Lunar and Meteor Observatory
• SST — Space Surveillance and Tracking
• DCT — Discrete Cosine Transformer
• KPNO — Kitt Peak National Observatory (Tucson, AZ)
• SEB — Systems Engineering Branch
• JCCT — Joint Commission on Commerce and Trade (US-China)
• CSG — Council of State Governments
• PLAWO — Publications of Laws Observatory
• ARC — Astrophysical Research Consortium
• IPNPR — Interplanetary Network Progress Report
• ISTAHC — International Society of Technology Assessment in Health Care
• CARA — Center for Astrophysical Research in Antarctica
• ASH — American Society of Hematology's
• SDSS — Sloan Digital Sky Survey
• CAROB — Carter Observatory Wellington New Zealand Astronomical Bulletins
• SSP — Subsolar Point
• TIROS — Television InfraRed Observation Satellite (POES)
• COWAT — Contributions of the University of Waterloo Observatory
• BAVSO — Bulletin of the American Association of Variable Stars Observers
• TUV — Technische Uberwachungs-Vereine
• CEO — Corporate Europe Observatory
• LLAGN — Low-Luminosity Active Galactic Nucleus
• CHI — California Healthcare Institute
• WR — Wolf-Rayet Star
• MSSSO — Mount Stromlo and Siding Spring Observatories
• ADC — Astronomical Data Center

• ORA — FDA's Office of Regulatory Affairs
• CO — Contracting Officer
• SAS — Space Adaptation Syndrome
• SBNC — Small Bodies Names Committee
• AIPS — Astronomical Image Processing System
• AEDRV — Astronomy Education Review
• CAPMI — Royal Observatory Cape Mimeogram
• CORAD — Communications from the Radcliffe Observatory Pretoria South Africa
• HIDA — Health Industry Distributors Association
• AC — Astrographic Catalogue
• DIN — Deutsches Institut fur Normung
• CFIT — Controlled Flight into Terrain
• SMS — Science Mission Specification
• PFAO — Publications of the Flower Astronomical Observatory
• ANSHO — Shanghai Observatory Annals
• EGRET — Energetic Gamma Ray Experiment Telescope
• QSR — Quality System Regulation
• IRBS — Infrared Background Sensor
• HIB — Health Insurance Bureau (Japan)
• HTML — Hyptertext Markup Language
• PRAST — Practical Astronomy
• SNR — Super Nova Remnant
• VPF — Vertical Processing Facility
• TEI — The Education Initiative
• APL — Astrophysical Letters
• ESOB — European Southern Observatory Bulletin
• ALPO — Association of Lunar and Planetary Observers
• MV — Apparent Visual Magnitude
• NIGMS — National Institute Of General Medical Sciences (NIH)
• LLC — Limited Liability Partnership
• PBRN — Publications of the Astronomical Institute of the University of Borneo
• FIPS — Fast Imaging Plasma Spectrometer
• NLN — National League for Nursing
• PDA — Parenteral Drug Association
• OMC — Orion Molecular Cloud
• PPMTO — Publications of the Purple Mountain Observatory
• LS/ST — Light Shield/Star Tracker
• IOLM — International Organization of Legal Metrology
• PPRC — Physician Payment Review Commission
• CRISTA — Cryogenic Infrared Spectrometer Telescope For Atmosphere
• EFPIA — European Federation of Pharmaceutical Industries and Associations
• FQR — Flight Qualification Review
• PDAO — Publications of the Dominion Astrophysical Observatory
• BEV — Billion Electron Volts
• QBO — Quasi-biennial Oscillation (atm.)
• NEP — North Ecliptic Pole
• LSF — Line Spread Function
• PDR — Physician’s Desk Reference
• STSCI — Space Telescope Science Institute
• MMASI — Memoirs of the Astronomical Society of India

• HSQB — Health Standard and Quality Bureau
• USNOC — United States Naval Observatory Circulars
• MEDGV — Germany's Medical Equipment Safety Law
• PAIB — Publications of the Astronomy Institute of Bonn
• KCAO — Kumamoto Civil Astronomical Observatory
• DEED — Minnesota Department of Employment and Economic Development
• UARS — Upper Atmosphere Research Satellite (NASA)
• MMO — Mercury Magnetospheric Orbiter
• HGA — High Gain Antennae
• APSSS — Astrophysics and Space Science Supplement
• FDAMA — FDA Modernization Act of 1997
• TIMED — Thermosphere Ionosphere Mesosphere Energetics and Dynamics
• AAO — Anglo-Australian Observatory
• INTEGRAL — International Gamma-Ray Astrophysics Laboratory
• CD-ROM — compact disc-read only memory
• PPQA — Pre-Product Quality Assurance
• SID — Sudden Ionospheric Disturbance
• RAD — Radiant
• CSVS — Catalogue of Suspected Variable Stars
• NAOJ — National Astronomical Observatory of Japan
• WRORE — Wroclaw Astronomical Observatory Reprints
• RGOO — Royal Greenwich Observatory Observations
• BATSE — Burst and Transient Source Experiment
• DRG — Diagnosis-Related Groups
• SPED — Space Education
• PASPS — Publications of the Astronomical Society of the Pacific Supplement
• AP&SS — Astrophysics and Space Science
• TOKAB — Tokyo Astronomical Bulletin
• SVPCS — Springer Verlag Springer Series on Physics Chemistry Space
• PSLV — Polar Satellite Launch Vehicle (Indian Space Research Organization; India)
• RAA — Relative Azimuth Angle
• MOSS — Market-Oriented Sector Selective
• RECONS — Research Consortium on Nearby Stars
• PRO — Professional Review Organization
• MOTIE — Ministry of Trade, Industry, and Energy (Korea)
• NED — NASA/IPAC Extragalactic Database
• PKAS — Publication of the Korean Astronomical Society
• ASCP — American Society for Clinical Pharmacology and Therapeutics
• LPV — Long Period Variable
• ECCLS — European Committee on Clinical Laboratory Standards
• NAMN — North American Meteor Network
• AGPS — Assisted Global Positioning System
• AIMBE — American Insitute for Medical and Biological Engineering
• RAPS — Regulatory Affairs Professional Society
• LST — Large Space Telescope
• MPEC — Minor Planet Electronic Circular
• ICH — International Conference of Harmonization
• ASTRA — Astrophysics and Space Sciences Transactions
• NAMES — National Association of Medical Equipment Services
• LEND — Lunar Exploration Neutron Detector

• KODRE — Kodaikanal Observatory Reprints
• GHA — Greenwich Hour Angle
• DES — Deep Ecliptic Survey
• SPAC — State Pharmaceutical Administration of China
• CARA — California Association for Research in Astronomy
• SMART — Small Missions for Advanced Research in Technology
• IDT — Instrument Development Team
• HPB — Health Protection Board (Canada)
• COOXF — Communications from the University Observatory Oxford
• SUSIM — Solar Ultraviolet Spectral Irradiance Monitor
• MMRAS — Memoirs of the Royal Astronomical Society
• MAGIC — Major Atmospheric Gamma-ray Imaging Cherenkov Telescope
• PYERO — Publications of the Yerkes Observatory
• RTC — Real-Time Command
• TIE — Telescopes in Education
• TTP — Time to Perigee
• ADIS — Astrophysics Data and Information Services
• WAXS — Wide Angle X-ray Scattering
• SYDOP — Sydney Observatory Papers
• TR — Tape Recorder
• ISTS — Institute for Space and Terrestrial Science
• VHT — Very High Temperature
• ISM — Interstellar Medium
• MMBAA — Memoirs of the British Astronomical Association
• RGO — Royal Greenwich Observatory
• SPO — Sacramento Peak Observatory
• JFMDA — Japan Federation of Medical Device Associations
• PMCCO — Publications of the Leander McCormick Observatory
• PISTO — Publications of the Istanbul Observatory
• MO — Mars Observer
• ANLL — Annals of the Observatory of Lucien Libert
• IMDA — Independent Medical Distributors Association
• VSOLJ — Variable Star Observers League in Japan
• JET-X — Joint European Telescope for X-ray astronomy
• CPFF — Cost Plus Fixed-Fee
• COLON — Communications of the University of London Observatory
• CAS — Cambridge Astrophysics Series
• MEI — Medical Economic Index
• PAB — Publications of The Astrophysics Branch Ottawa
• NRO — U.S. National Reconnaissance Office
• MVEMJSUNP — Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto
• LAWOB — Laws Observatory Bulletin
• GHRS — Goddard High Resolution Spectrograph
• EVN — European VLBI Network
• TOPS — Toward Other Planetary Systems
• SR — Spectral Recording
• VAP — Verification and Acceptance Program
• AVSOR — American Association of Variable Stars Observers Reports
• EU — Extended Universe
• MACHO — Massive Astronomical Compact Halo Object

• EPD — Energetic Particles Detector
• PAICZ — Publications of the Astronomical Institute of the Czechoslovak Academy of Sciences
• UHMW — Ultra High Molecular Weight
• ARBEI — Astrophysics Reports Publications of the Beijing Astronomical Observatory
• RASC — Royal Astronomical Society of Canada
• AAAD — Amateur Astronomers Association Delhi
• QE — Quantum Efficiency
• ALMA — Atacama Large Millimeter Array
• EMDM — European Medical Device Manufacturer
• CPD — Cape Photographic Durchmusterung
• SF — Square Foot
• IDA — International Dark-Sky Association, Inc.
• HDIF — Health Care Data Interchange Format
• ANBOS — Annals of the Bosscha Observatory Lembang
• EBTC — Edison BioTechnology Center
• DNA — Digital Network Architecture
• STAR — Space Telescope Axial Replacement
• IOTA — International Occultation Timing Association
• ANCGH — Annals of Royal Observatory, Cape of Good Hope
• ISTEC — International Small Telescope Cooperative
• CIAO — Chandra Interactive Analysis of Observations
• EDMA — European Diagnostics Manufacturer's Association
• ATM — Amateur Telescope Maker
• APT — Automatic Photometric Telescope
• QSIT — Quality System Inspection Technique
• PT — Pass-Through
• PACS — Physics and Astronomy Classification Schemex
• ITF — Intensity Transfer Function
• CCA — Cambridge Contemporary Astrophysics
• PDO — Publications of the Dominion Observatory Ottawa
• VAB — Vehicle Assembly Building
• RAL — Radio Astronomy Laboratory
• PAB — Pharmaceutical Affairs Bureau (Japan)
• CRS — Cambridge Reference Sequence
• WEBT — Whole Earth Blazar Telescope
• RTK — Right-To-Know
• TMP — Technical Management Plan
• AMR — Antarctic Meteorite Research
• VTHL — Vertical Takeoff Horizontal Landing
• MNSSA — Monthly Notes of the Astronomical Society of South Africa
• BALTA — Baltic Astronomy
• GRO — Gamma Ray Observatory (NASA)
• NRAO — National Radio Astronomy Observatory (Greenbank, WV)
• PVASO — Publications of the Vassar College Observatory
• M&P — Moon and Planets
• MEDSUN — Medical Device Surveillance Network
• PKIRO — Publications of the Kirkwood Observatory of Indiana University
• PMA — Premarket Application
• ECA — Earth Crossing Asteroid
• NAG — Numerical Algorithms Group Inc.

• XUV — Extreme Ultraviolet
• UCLA — Harbor-University of California Los Angeles
• AST — Astrometry Science Team
• MPBU — Minor Planet Bulletin
• POL — Physician's Office Laboratory
• DADS — Data Archive and Distribution System
• PISCO — Parallel Imager for Southern Cosmological Observations
• UADE — Unanticipated Adverse Device Effects
• PCOOO — Publications of the Cook Observatory
• WILOO — Williamstown Observatory Observations
• SAAO — South African Astronomical Observatory
• NEA — Noise Equivalent Angle
• FIRST — Frontiers in Research: Space and Time
• COPRI — Contributions from the Princeton University Observatory
• CPMF — cost plus management fee
• NACA — National Advisory Committee on Aeronautics
• ISR — Instrument Science Report
• COAST — Communications in Asteroseismology
• LNSP — Lecture Notes and Supplements in Physics
• MDMA — Medical Device Manufacturers Association
• NHIB — National Health Insurance Bureau (Taiwan)
• SMDA — Safe Medical Devices Act (1990)
• RTS — Relative Time Sequence
• SGF — SpaceGuard Foundation
• DSO — Deep Sky Object
• CSM — Command and Service Module
• HCPCS — Health Care Common Procedure Coding System
• MOND — Modified Newtonian Dynamics
• VCS — Vernier Control System
• PERI — Pharmaceutical Education & Research Institute
• UPPOR — Uppsala Astronomical Observatory Reports
• SPIE — The Society of Photo-optical Instrumentation Engineers
• TT — Terrestrial Time
• AGN — Active Galaxy Nucleus
• VLA — Very Large Array
• HEDIS — Healthplan Employee Data and Information
• COCIR — Coordination Committee of the Radiological and Electromedical Industries
• SOLSTICE — Solar Stellar Irradiance Comparison Experiment
• AMDM — Association of Medical Diagnostics Manufacturers
• MDRS — Mars Desert Research Station
• KP — Kitt Peak
• ASIM — American Society of International Medicine
• MEERE — Kenneth Mees Observatory Reprints
• SPP — Subset Preprocessor
• BDB — Big Dumb Booster
• VLBI — Very Long Baseline Interferometry
• IUEDAC — IUE satellite Data Analysis Center
• TDRS — Tracking and Data Relay Satellites
• CST — Constant-Separation Traversing
• RGOB — Royal Greenwich Observatory Bulletin

• MS — Mission Schedule
• STSKY — Star Sky
• SIRTF — Space Infrared Telescope Facility
• SST — Spitzer Space Telescope
• CARRE — Carter Observatory Wellington New Zealand Reprints
• SSDF — Space Science Development Facility
• CIT — Circumstellar Imaging Telescope
• USAFA — United States Air Force Academy
• MFR — Manipulator Foot Restraint
• SPRRE — Sproul Observatory Reprints
• GIO — graphics input/output
• NMDC — National Medical Device Coalition
• LPO — La Palma Observatory
• RM — Retrieval Mode
• JETRO — Japan External Trade Organization
• SERAJ — Serbian Astronomical Journal
• LAMP — Lyman-Alpha Mapping Project
• SOPH — Solar Physics
• VBO — Vainu Bappu Observatory
• NAHC — National Association of Home Care
• LIGO — Laser Interferometer Gravitational-Wave Observatory
• OAF — Optical Alignment Facility
• PYUNO — Publications of the Yunnan Observatory
• IRA — Infrared Astronomy
• MNBIO — Minnesota Biotechnology
• OCC — Operations control center
• OPS — Operations Division
• ER — Eastern Range
• IOA — Institute Of Astronomy (Cambridge)
• PASK — Publications of the Academy of Science Kasakstan
• PBPK — Physiologically-Based Pharmacokinetic
• HUT — Hopkins Ultraviolet Telescope
• BCG — Blue Compact Galaxy
• MPI — Minnesota Project Innovation
• STERE — Steward Observatory Reprints
• MEDMARC — Medical Device Material Assurance and Reinsurance Company, Ltd.
• TEP — Transits of Extrasolar Planets
• MPC — Minor Planets Circular
• WFC — Wide-Field Camera
• RA — Research Assistant
• PCS — Physics and Chemistry in Space
• MTSOM — Mount Stromlo Observatory Mimeographs
• BCS — Bragg Crystal Spectrometer
• PAN-STARRS — Panoramic Survey Telescope and Rapid Response System
• MDC — Major Diagnostics Category
• EUCOMED — European Confederation of Medical Suppliers Associations
• PWASO — Publications of the Washburn Observatory
• TMA — Tycho Magnetic Anomaly
• ASTQ — Astronomy Quarterly
• S&T — Sky & Telescope

• QTG — Quantum Theory of Gravity
• SAT — Synthetic Aperture Telescope
• EAAA — Escambia Amateur Astronomers Association
• GRS — Gamma Ray Spectrometer
• ROAN — Royal Observatory Annals
• WAA — Westchester Amateur Astronomers
• PGOOO — Publications of the Goodsell Observatory
• JGR — Journal of Geophysical Research
• IFCC — International Federation of Clinical Chemists
• LDEF — Long Duration Exposure Facility (for Spacecraft Material Testing)
• PAM-D — Payload Assist Module, Delta-class
• HRS — High Resolution Spectrograph
• PEB — Performance Evaluation Board
• TBBT — The Big Bang Theory
• D/A — Digital-to-Analog
• FACC — Ford Aerospace Communications Corporation
• HAACP — Hazard Analysis Critical Control Points Program
• MACHO — Massive Compact Halo Object
• EUV — Extreme Ultra-Violet 2
• NAS — Norsk Astronomisk Selskap
• VEEGA — Venus-Earth-Earth Gravity Assist
• JHU — The Johns Hopkins University (Baltimore, MD)
• GEO — Geosynchronous Earth Orbit
• LRO — Large Radio Observatory
• SPAN — Space Physics Analysis Network
• SM — Standard Model
• MTI — Minnesota Technology Inc
• ACE — Actuator Control Electronics
• STMAP — Studies in Mathematical Physics
• IGY — International Geophysical Year (1 July 1957 - 31 December 1958)
• CCDM — Catalog of Components of Double and Multiple Stars
• NG — Newsgroup
• EU — Engineering Unit
• MTF — Modulation transfer function.
• CCLRC — Central Laboratory of the Research Councils
• PDAA — Publications of the Department of Astronomy, Austin, Texas
• WMAP — Wilkinson Microwave Anisotropy Probe
• SB — Spectroscopic Binary
• B/W — Black and White
• TECRV — Technology Review
• SPWD — Space World
• SGR — Soft Gamma Repeater
• FAME — Full-sky Astrometric Mapping Explorer
• LPI — Lunar and Planetary Institute
• NSSCC — NORAD Space Surveillance Computation Center
• GAS — Getaway Special
• MDR — Medical Device Register
• TAG — Two-Axis Gimbal
• RAPS — radiologists, anesthesiologists, and pathologists
• SAA — South Atlantic Anomaly

• VDC — Volts, Direct Current
• MDA — Medical Device Amendments
• GDS — Great Dark Spot
• MICRE — University of Michigan Observatory Reprints
• IPA — Institute for Polyacryclate Sciences
• MPC — Minor Planet Circulars
• SIP — Sickness Index Profile
• TOCC — TDRS Operations Control Center
• MTWAR — Mount Wilson and Palomar Observatory Annual Report
• GLOB — Globular
• OXFOO — Oxford University Observatory Observations
• ST-ECF — Space Telescope - European Coordinating Facility
• NOCC — Network Operations Control Center (GSFC)
• NSC — Navigational Star Catalog
• SOHO — SOlar and Heliospheric Observatory
• NSL — Northrop Space Laboratory
• FK4 — Fundamental Katalog 4
• OBAFGKM — Oh, Be A Fine Girl, Kiss Me
• PF&CO — Publications of the Flower and Cook Astronomical Observatory
• MODIS — Moderate Resolution Imaging Spectroradiometer
• CSM — Circumstellar Material
• STEREO — Solar Terrestrial Relations Observatory
• CSO — Caltech Submillimeter Observatory
• MBBNET — Minnesota Biomedical Business Network
• AOR — Astronomical Observation Request
• RLQ — Radio Loud Quasar
• SIMBAD — Set of Identifications, Measurements, and Bibliography for Astronomical Data
• ASP — Astronomical Society of the Pacific
• LOWOB — Lowell Observatory Bulletin
• SARA — Satellite pour Astronomie Radio Amateur
• FPA — Floating Point Accelerator
• HRA — High Resolution Apodizer
• NESSI — Near Earth Space Surveillance Initiative
• BMDO — Ballistic Missile Defense Office
• SRON — Space Research Organization of the Netherlands
• MMIC — Medical Manufacturers' Information Council
• MVCA — Minnesota Venture Capital Association
• ERF — Energy Rejection Filter
• GSPC — Guide Star Photometry Catalog
• GML — Galactic Modeling Language
• BAC — Bordeaux Astrographic Catalog
• USNOR — United States Naval Observatory Reports
• RVGSP — Reviews of Geophysics and Space Physics
• CTO — Color Temperature Orange
• IAO — International Astronomy Olympiad
• CVZ — Continuous Viewing Zone (Hubble Space Telescope; US NASA)
• THAST — Theoretical Astrophysics
• PDA — Photon Detector Assembly
• MTWRE — Mount Wilson and Palomar Observatory Reprints
• CCD — Color-Color Diagram

• TNO — Trans-Neptunian Object
• FSM — First Servicing Mission
• MACRO — Monopole, Astrophysics and Cosmic Ray Observatory
• AGK3 — Katalog der Astronomischen Gesellschaft 3
• STHCG — Studies in High Energy Physics Cosmology and Gravitation
• CDMH — Cold Dark Matter Haloes
• DDTE — Design, Development, Test, and Evaluation
• DISR — Descent Imager/Spectral Radiometer
• IPS — Inches Per Second
• DOC — Data Operations Center
• BHTA — British Healthcare Trades Industry
• FES — Fine Error Signal
• FAST — Fast Auroral Snapshot Explorer
• SP — Solar Physics
• ESS — Engineering Support System
• KTB — Cretaceous-Tertiary Boundary
• SMA — Secondary Mirror Assembly
• JVO — Japanese Virtual Observatory
• MDR — Medical Device Reports
• RTV — Room Temperature Vulcanizer
• TEC — Thermal Electric Cooler
• VAFB — Vandenberg Air Force Base
• PBOSO — Publications of the Bosscha Observatory Lembang
• FDI — failure detection and isolation
• PNLF — Planetary Nebula Luminosity Function (astronomy)
• Z — Redshift Factor
• BWI — Baltimore-Washington International Airport, between Baltimore, Maryland and Washington, DC, United States
• SPD — Solar Physics Division
• OOTU — Origin Of The Universe
• WAA — Western Amateur Astronomers
• GVI — Global Village Idiot
• HVR — Hyper-Variable Region
• WSMR — White Sands Missile Range (whiz-murr)
• TGF — Terrestrial Gamma-Ray Flash
• PVSS — Publications of Variable Star Section
• PEP — Proposal Entry Processor
• ISO — Imaging Spectrometic Observatory
• A/D — Analog to Digital (conversion)
• LVPS — Low Voltage Power Supply
• ODE — Office of Device Evaluation
• WSO — Wilcox Solar Observatory
• CWS — Committee on World Standards
• MA — Medical Alley
• DSS — Digitized Sky Survey
• EA — Eclipsing Algol
• ETC — Estimated Time to Completion
• NEAF — North East Astronomy Forum
• IDT — Image Dissector Tube
• DENIS — Deep Near-Infrared Survey
• RICAP — Roma International Conference on Astroparticle Physics

• CAI — Calcium Aluminum-rich Inclusion
• XMM — X-ray Multi Mirror
• RC — Reference Catalogue
• TAI — International Atomic Time
• MER — Mars Exploration Rover
• BDF — Block Data Format
• SN — SuperNova
• ESTEC — European Space Technology Center
• AGN — Active Galactic Nucleus
• ZD — Zenith Distance
• UBM — Unpressurized Berthing Mechanism
• IPNS — Intense Pulsed Neutron Source
• AST — Apparent Solar Time
• DQE — Detector Quantum Efficiency
• AAA — Amateur Astronomers Association
• CCL — Closed Conference Loop
• BRITE — Bright-Star Target Explorer
• JCMT — James Clerk Maxwell Telescope
• SLOI — Satellite Lake Observatory Initiative
• LDEO — Lamont-Doherty Earth Observatory
• 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)
• NEO — Near Earth Object
• LFT — Luyten Five-Tenths
• MLI — Multilayer Insulation
• DN — Digital Number
• MOWG — Mission Operations Working Group
• KBO — Kuiper Belt Object
• SST — Software Support Team
• CPMM — characters per millimeter
• ATR — Absolute Time Reference
• NM — Non-Moment
• DLR — Deutschen Zentrum für Luft- und Raumfahrt
• B/L — Baseline
• HLV — Heavy Lift Vehicle
• VAC — Volts, Alternating Current
• LBN — Lynds Bright Nebula
• AIT — Assembly, Integration, and Testing
• IRFNA — Inhibited Red Fuming Nitric Acid
• SNAP — Structural Network Analysis Program
• DQF — Data Quality File
• VOIR — Venus Orbiting Imaging Radar
• SWAT — Swift Action Team
• FGE — Fine Guidance Electronics
• SV — Science Verification
• OLT — Observatory Level Test
• TAR — Test Authorization Request
• SQPK — staggered quadrature phase shift keying
• DCF — Data Capture Facility
• COTS — Cheap Off the Shelf
• SSGSR — Springer Verlag Springer Series on Group Geophysics Space Research

• CSPN — Central Star of Planetary Nebula
• BOOK — Bio Optical Organized Knowledge
• ACRV — Astronaut Crew Rescue Vehicle
• SWEEPS — Sagittarius Window Eclipsing Extrasolar Planet Search
• SPDM — Special Purpose Dextrous Manipulator
• SFS — Smallest Feature Size
• ABB — After the Big Bang
• POCC — Payload Operations Control Center
• GTO — Guaranteed Time Observer
• LCG — light curve generator
• CM — Center of Mass
• LERC — Lewis Research Center
• AEA — Atomic Energy Agency
• GST — Ground System Test
• CCAR — Colorado Center for Astrodynamics Research
• IPPPSSOOT — file naming convention for HST data sets
• AVWG — Assembly and Verification Working Group
• MONGO — Interactive graphics software package
• RMS — Record Management System
• QV — quick visual
• OGSE — Optical Ground Support Equipment
• JWST — James Webb Space Telescope
• LCRS — Las Campanas Redshift Survey
• UIC — User Identification Code
• PV — photovoltaic (solar)
• ARGOS — Advanced Research Global Observation Satellite
• VRCS — Vernier Reaction Control System
• SKA — Square Kilometre Array
• DMS — Data Management Subsystem
• WCFZ — Worst Case Fresnel Zone
• ZPF — Zero-Point-Fluctuation
• GCVS — General Catalog of Variable Stars
• SNR — SuperNova Remnant
• TMTE — Telemetry Test Equipment
• ODAS — OCA (Observatoire de la Côte d'Azur) - DLR (Deutschen Zentrum für Luft- und Raumfahrt) Asteroid Survey
• VFN — virtual file name
• APT — Automated Patrol Telescope
• CIP — Celestial Intermediate Pole
• ACV — Alpha Canes Venatici
• IDMP — International Daylight Measurement Program
• OPB — Observation Planning Branch
• ODC — Other Direct Cost
• UIT — Ultraviolet Imaging Telescope
• PK — Perek-Kohoutek
• SJC — slit jaw camera
• OMS — Observatory Monitoring System
• QZ — Quasi Zenith
• RV — Radial Velocity
• PSF — Point Spread Function
• CM/QA — Configuration Management/Quality Assurance

• STERJ — Solar, Terrestrial and Environmental Research Japan
• CELT — California Extremely Large Telescope
• SETI — Search for Extra Terrestial Intelligence
• LGRB(S) — long gamma ray burst(s)
• SLAP — Space Link Access Protocol
• PLSS — Portable Life Support System
• A — Angstrom unit
• GMC — Giant Molecular Cloud
• OCB — Operational Configuration Baseline
• SPIF — Shuttle/POCC Interface Facility
• VLT — Very Large Telescope
• LBVS — Luminous blue variable
• WKO — Well-Known Object
• FIRST — Far InfraRed and Submillimeter Space Telescope
• MTR — Mean Time to Restore
• SOUST — Southern Skies
• EROS — Earth Resources Observation Satellite
• EAPU — External Auxiliary Power Unit
• XN — X-ray Nova
• AOA — ASCA Online Arxiv
• STARCAT — Space Telescope Archive Catalog
• AXP — Anomalous X-Ray Pulsar
• MIDAS — Munich Image Data Analysis System
• IAAC — Internet Amateur Astronomers Catalog
• HIPO — Hierarchic Input-Process-Output
• SERF — Space Environment Research Facility
• CAAS — Central Arkansas Astronomical Society
• IRAC — International Radio Advisory Committee
• C/C — configuration control
• SIC — Spacecraft Identification Code
• HEO — Highly Elliptical Orbit
• ABBA — ADC Backend For Bolometer Array
• ETOL — ESA Test and Operations Language
• EJASA — Electronic Journal of the Astronomical Society of the Atlantic
• SP — sun point
• SED — Spectral Energy Distribution
• SAL — Space Astronomy Laboratory (Univ. Wisconsin, Madison WI)
• SDP — science data packet
• P&A — Physics and Astronomy
• AGK — Astronomische Gesellschaft Katalog
• CISCO — Cooled Infrared Spectrograph and Camera for OHS
• MPF — Mars PathFinder
• ACS — Advanced Camera for Surveys
• E/A — Ephemeris/Attitude
• C&A — calibration and analysis
• TKSC — Tsukuba Space Center
• SSC — Science Support Center
• T&E — Test and Evaluation
• VLBA — Very Long Baseline Array
• OCO — Oort Cloud Object

• SPRL — Space Physics Research Laboratory
• ORR — Orbit Readiness Review
• OTHB — Over The Horizon Backscatter
• SPT — South Pole Telescope
• PODPS — Post Observation Data Processing System
• AXAF — Assembly and Verification Working Group
• CVC — Current-to-Voltage Converter
• TWA — TW Hydrae Association
• HFQPO(S) — high-frequency quasi-periodic oscillation(s)
• OC — Open Cluster
• PMDB — Project Management Data Base
• NR — Non-Relativistic
• MCSA — Mir Cooperative Solar Array
• UKIRT — United Kingdom Infrared Telescope
• OCS — Optical Control System
• RC — Relativistic Correction
• SAM — Small Angle Maneuver
• IWG — Interface Working Group
• STOL — Systems Test and Operations Language
• MSP — Millisecond Pulsar
• ETR — Engineering Tape Recorder
• SCAS — Southern Cross Astronomical Society, Inc.
• RASS — ROSAT All-Sky Survey
• HB — Hot Bands
• MSOCC — Multisatellite Operations Control Center
• LIRG — Luminous Infrared Galaxy
• SRS — Stellar Radiation Sensor
• ORB — Observatoire Royal de Belgique (Royal Observatory of Belgium)
• SUVSR — Scandinavian Union of Amateur Astronomers Variable Star Section
• CREAM — Cosmic Ray Energetics and Mass
• CNSR — Comet Nucleus Sample Return
• CBS — Contract and Business Services
• CG — Compact Galaxy
• ATCA — Australia Telescope Compact Array
• SIA — Solar Inertial Attitude
• BST — British Summer Time [GMT 0100]
• SCSP — Science and Culture Series Physics
• SLTV — System Level Thermal Vacuum
• IDM — Intelligent Database Machine
• TSTO — Two-Stage-To-Orbit
• CSS — Catalina Sky Survey
• UDMH — Unsymmetrical Dimethyl Hydrazine (Alar Metabolite)
• HAO — High Altitude Observatory (NCAR)
• SMM — Solar Maximum Mission
• DDCU — DC-to-DC Converter Unit
• EAAE — European Association for Astronomy Education
• PASP — Publications of the Astronomical Society of Pacific
• HERA — Hermes Robotic Arm
• NOT — NOrdic Telescope
• WAA — Wiener Arbeitsgemeinschaft für Astronomie

• FPA — Focal Plane Assembly
• PRESTO — Project to Re-Engineer Space Telescope Observing
• LSO — Large Solar Observatory
• VZA — Viewing Zenith Angle
• TOYAL — Transactions of the Astronomical Observatory of Yale University
• GSOWG — Ground Systems Operations Working Group
• ACM — Asteroids Comets Meteors
• RPI — Rensselaer Polytechnic Institute (Rensselaer, NY)
• VSSCI — Variable Star Section Circulars
• DN — Dwarf Nova
• PAD — Pulse Amplitude Discriminator
• VHE — Very High Energy
• RPO — Research Programs Office
• EAAS — East Antrim Astronomical Society
• MAST — Multimission Archive at Space Telescope
• XSC — Extended Source Catalog
• CMC — Carlsberg Meridian Catalogue
• VERITAS — Very Energetic Radiation Imaging Telescope Array System
• MCG — Morphological Catalog of Galaxies
• OSS — Observation Support System
• STR — Science Tape Recorder
• WTR — Western Test Range
• FRAS — fellow of the Royal Astronomical Society
• ESTR — Engineering and Science Tape Recorder
• AAAM — Active Amateur Astronomers of Maryland
• IRDC — Infrared Dark Cloud
• PASP — Proceedings of the Astronomical Society of the Pacific
• UST — Universal Standard Time
• FEM — Finite Element Model
• CFCO — Committee for Crescent Observation
• AWG — Astronomy Working Group
• SPIEL — Signal Processing Interactive Extensible Language
• NGS — National Geographic Society
• NPS — North Polar Sequence
• RC — Ritchey-Chretien
• SETA — Search for Extra Terrestrial Artifacts
• MPCS — Minor Planet circulars Supplement
• MOLA — Mars Observer Laser Altimeter
• FGSAA — FGS Access Area
• LITVC — Liquid Injection Thrust Vector Control
• UGSU — UG SU Ursae Majoris
• SAGA — Solar Array Gain Augmentation
• SHAD — Stellar Horizon Atmospheric Dispersion
• MSTO — Main Sequence Turn-Off
• SFC — Space Forecast Center
• EMP — Extremely Metal-Poor
• SWAS — Submillimeter Wave Astronomy Satellite
• RXTE — Rossi X-Ray Timing Explorer
• PWM — pulse width modulated
• IRAC — Infrared Array Camera

• DCEP — Delta Cepheid
• TECU — Technology and Culture
• CAAA — Capital Area Astronomy Association
• TIUCS — Transactions of the International Union for Cooperation in Solar Research
• PWD — Pre-White Dwarf
• ZOF — zone of exclusion
• GEIS — Generic Edited Information Set
• SEB — Source Evaluation Board
• RFT — Rich Field Telescope
• SIF — Science Instrument Formatter
• GOX — Gaseous Oxygen
• RNP — Rotation, Nutation and Precession
• CMT — Carlsberg Meridian Telescope
• NEMP — Nitrogen-Enhanced Metal-Poor
• STL — science trailer line
• COMPTEL — Compton Telescope
• THEMIS — Thermal Emission Imaging System
• AET — Accuracy Enhancing Technology
• ZAP — Z Axis Precession
• ZHR — Zenith Hourly Rate
• BSG — Blue SuperGiant
• RRAT — Rotating RAdio Transient
• AEDP — Astrometry and Engineering Data Processing
• NEA — Near-Earth Asteroid
• SQM — Strange Quark Matter
• LBV — Luminous Blue Variable
• MS — Meteor Scattering
• NICMOS — Near-Infrared Camera and Multi-Object Spectrometer
• SPA — Solar Panel Assembly
• CFCP — Center for Cosmological Physics
• FGS — Fine Guidance Sensors
• STIF — Software Test and Integration Facility
• SJR — Software Justification Report
• QPOE — Quick Position Oriented Event
• CIBR — Cosmic Infrared Background Radiation
• UCSD — University of California San Diego
• ACS — Actuator Control System
• ADIL — Astronomy Digital Image Library
• DVA — Detector Vacuum Assembly
• UMCP — University of Maryland College Park
• BOAO — Bohyunsan Optical Astronomy Observatory
• RNGC — Revised New General Catalog
• PDBI — Plateau de Bure Interferometer
• LENA — Low Energy Neutrino Astronomy
• CSLG — Campus-wide Software License Grants Program
• EKBO — Edgeworth-Kuiper Belt Object
• GLOW — Gross Lift-Off Weight
• HDOS — Hughes Danbury Optical Systems (Danbury CT)
• LP — Luyten Palomar
• BCCP — Berkeley Center for Cosmological Physics

• BEM — Bug-Eyed Monster (Late 40's-early 50'soft-used, and still in use, Sci-Fi term)
• PSL — Program Support Library
• XIS — X-ray Imaging Spectrometer
• STAVF — Space Telescope Assembly and Verification Facility
• CTIO — Cerro Tololo Inter-American Observatory
• PFI — Partial Frame Image
• ROLUN — Reports of the Lund Observatory
• CDCA — Centre de Depoiullement des Cliches Astronimiques
• ASP — Analog Signal Processor
• ITA — Institute of Theoretical Astronomy
• PNNV — Planetary Nebula Nucleus Variable
• SUMER — Solar Ultraviolet Measurements of Emitted Radiation
• ETRD — Engineering Tape Recorded Data
• FPSA — FPA Structure Assembly
• ACP — Aerosol Collector and Pyrolyser
• SDMS — Spatial Data Management System
• ELIAS — European Large Area ISO Survey
• RAG — Radio Astronomy Group
• WFS — Wave Front Sensor
• IFT — Inverse Fourier Transform
• TCB — Barycentric Coordinate Time
• IQL — Interactive Query Language
• NAO — National Astronomy Olympiad
• VELLO — Very Low Luminosity Object
• LUT — Lookup Table
• AAT — Anglo-Australian Telescope
• CSPAR — Center for Space Plasma and Aeronomic Research
• PSR — Project Status Review
• XCS — XMM Cluster Survey
• CASB — Catalogs and Survey Branch
• CVAS — Chippewa Valley Astronomical Society
• SAOCO — Smithsonian Astrophysical Observatory - Contributions to Astrophysics
• R&I — Receiving and Inspection
• PFS — Percent Full Scale
• LFAE — Light Field Attribute Explorer
• SOFA — Standards of Fundamental Astronomy
• BITP — Bogolyubov Institute for Theoretical Physics
• SIB — Science Instrument Branch
• WISARD — Web Interface for Searching Archival Research Data
• ASAS — All Sky Automated Survey
• SQPN — staggered quadriphase pseudo-random noise
• LOTOSS — Lick Observatory and Tenagra Observatory Supernova Searches
• PPF — Payload Processing Facility (USAF)
• FFD — First Fixation Duration
• RQZ — Radio Quiet Zone
• VILCO — Villanova University Observatory Contributions
• SF — Star Field
• BATC — Beijing-Arizona-Taiwan-Connecticut
• GAF — Geographic Adjustment Factor
• TFMRP — Transfer Function Mode Reduction Package

• CMCC — Central Mission Control Centre
• CADC — Canadian Astronomical Data Center
• MOXE — MOnitoring X-Ray Experiment
• NRF — National Research Foundation
• EVAC — East Valley Astronomy Club
• QPSK — quadriture phase shift keying
• TAUVEX — Tel Aviv University Ultraviolet Explorer
• EBE — Extraterrestrial Biological Entity
• MLRS — McDonald Laser Ranging Station
• SSU — Steady State Universe
• PNG — Planetary Nebulae, Galactic
• ARAA — Annual Review of Astronomy and Astrophysics
• BDEC — Bendix Field Engineering Corporation
• MINISAT — Miniature Satellite
• ICF — Intrinsic Correlation Function
• CCIR — Comit? Consultatif International Pour La Radio (French For Consultative Committee On International Radio
• SMBH — Super Massive Black Hole
• GPB — Group Parameter Block
• STOCC — Space Telescope Operations Control Center (GSFC, Greenbelt MD)
• VVDS — VIMOS-VLT Deep Survey
• PMIRR — Pressure Modulated InfraRed Radiometer
• AAS — Archaeology Astronautics and Seti
• SOHO — Solar Heliospheric Observatory
• IRAIT — International Robotic Antarctic Infrared Telescope
• HTHL — Horizontal Takeoff Horizontal Landing
• CC — Candidate Companion
• ECT — Equator Crossing Time
• SAS — Science Analysis Software
• AQR — Aquarius
• YSO — Young Stellar Object
• OCST — Office of Commercial Space Transportation
• SANSA — South African National Space Agency
• SXR — Soft X-Ray
• TTC — telemetry, tracking, and command
• ALAT — Airborne Large Aperture Telescope
• ASWG — Astronomical Science Working Group
• QPO — Quasi-periodic Oscillation
• DSOB — Data Systems Operations Branch
• CNES — Centre National d'Etude Spatiales
• SIPS — Southern Infrared Proper Motion Survey
• CSAA — Committee on Space Astronomy and Astrophysics
• FSS — Flight Servicing System
• SVWG — Science Verification Working Group
• APSB — Advance Planning Systems Branch
• OCX — observation comments file
• MWO — Mount Wilson Observatory
• BMO — Black Moving Object
• CM — Critical mass
• CMBR — Cosmic Microwave Background Radiation
• ULAS — Union List of Astronomy Serials

• VSSRE — Variable Star Section Reprints
• PRE — Photospheric Radius Expansion
• SCSA — Science and Culture Series Astrophysics
• MMR — Mean-Motion Resonance
• ADAS — Asiago DLR Asteroid Survey
• SEA — Sensor Electronics Assembly
• ICSO — International Conference on Space Optics
• HTVL — Horizontal Takeoff Vertical Landing
• EAFB — Edwards Air Force Base
• TASS — The Amateur Sky Survey
• GXY — Galaxy
• BAV — Bundesdeutsche Arbeitsgemeinschaft fur Veraenderliche Sterne
• TAU — Thousand Astronomical Unit
• ETI — Extraterrestrial Intelligence
• RGA — Rate Gyro Assembly
• FPAS — FPA Shroud
• ADAF — Advection-dominated Accretion Flow
• SIMA — Secondary Mirror Incremental Motor Actuator
• CCO — Catalogue of Cometary Orbits
• MOSES — Mission Operations and Systems Engineering Support
• PSR — Pulsar Supernova Remnant
• COL — Collinder catalog
• WIRCAM — Wide-field InfraRed Camera, instrument on the Canada-France-Hawaii Telescope
• GMRT — Giant Meter-wave Radio Telescope
• AESS — Institute of Electrical and Electronic Engineers - Aerospace and Electronics Systems Society
• SSO — Special Studies Office
• FOCAS — Faint Object Classification and Analysis System
• NAIF — Navigation Ancillary Information Facility
• LC — Las Campanas observatory
• AVO — Astrophysical Virtual Observatory
• SEP — System Enhancement Plan
• COMICS — Cooled Mid-Infrared Camera and Spectrometer
• PSI — Planetary Science Institute
• IMSL — International Mathematical and Statistical Library
• CEMP — Carbon-Enhanced Metal-Poor
• ADS — Aitken Double Stars
• LST — Local Sidereal Time
• LCDM — Lambda Cold Dark Matter
• AGAPE — Andromeda Galaxy and Amplified Pixels Experiment
• DSD — Data Systems Division
• CRAP — Completely Radical Anthropic Principle
• GCC — Globular Cluster Candidate
• BBH — Big Black Hole
• TAROT — Télescope à Action Rapide pour les Objets Transitoires
• IVC — Institute Visiting Committee
• GBT — Green Bank Telescope
• CXBR — Cosmic X-ray Background Radiation
• MOTV — Manned Orbital Transfer Vehicle
• APASS — AAVSO Photometric All-Sky Survey
• PEP — PhotoElectric Photometry

• MUSTANG — Multiplexed SQUID TES Array at Ninety GHz
• SPSS — Science Planning and Scheduling System
• ACURA — Association of Canadian Universities for Research in Astronomy
• STSDAS — Space Telescope Science Data Analysis System
• IIPS — Interactive Image Processing System
• DPOSS — Digitized Palomar Observatory Sky Survey
• GC — Galactic Center
• KIC — Kepler Input Catalog
• VRM — Venus Radar Mapper
• CRTS — Centre Royal de Teledetection Spatiale
• IRTF — Infrared Telescope Facility
• STIF — Science and Technology Information Facility
• LINER — Low Ionization Nuclear Emission Region
• AEG — Astro Event Group
• DS — Dwarf Star
• CDIMP — Catalogue of Discoveries and Identifications of Minor Planets
• IARA — Italian Amateur Radio Astronomy
• ENE — East North East
• FEAT — Fine Error Averaging Test
• IRCS — Infrared Camera and Spectrograph
• KAO — Kuiper Airborne Observatory
• OVIWG — Orbital Verification Implementation Working Group
• AUDS — ALFA Ultra Deep Survey
• LTM — Like The Moon
• CSV — Catalog of Suspected Variables
• GSSS — Guide Star Selection System
• SMOV — Servicing Mission Observatory Verification
• DBW — decibel reference to 1 watt
• PORTS — Preliminary Operations Requirements and Test Support
• RSB — Research Support Branch
• LMST — Local Mean Sidereal Time
• BLO — Bl Lac Object
• TIB — Telescope Instrument Branch
• KAIT — Katzman Automatic Imaging Telescope
• MAG — Magnitude
• DCA — Detector Control Assembly
• CNS — Computing and Network Services
• SCARS — Science Computing & Research Support Division
• SXT — Soft X-Ray Telescope
• BRAVO — Back-End Redesign for Added Value for Observers
• OPD — Operations and Data Processing Division
• SEI — Space Exploration Initiative
• PUSNO — Publications of the US Naval Observatory
• RABF — Radio Astronomy Bandstop Filter
• GEM — Galileo Europa Mission
• PCT — Program Coordinator Team
• MPP — multi-pinned phase
• OPO — Operations Project Office
• WIRE — Wide-Field Infrared Explorer
• RC — Red Clump

• JFC — Jupiter Family Comets
• FASTT — Flagstaff Astrometric Scanning Transit Telescope
• WIYN — Wisconsin Indiana Yale NOAO Telescope Consortium
• BPM — Bruce Proper Motion
• SMM — science mission management
• EARS — Electrostatic Atmospherics Radio Sensor
• MV — absolute visual magnitude
• UNPSA — United Nations Programme on Space Applications
• FIRST — Faint Images of the Radio Sky at Twenty-centimeters
• IPPW — International Planetary Probe Workshop
• UGSS — UG SS Cygni
• GSP — General Support Pool
• VRSD — Verification Requirements and Specifications Document
• IB — Interstellar Band
• RDI — Radiation Driven Implosion
• CG — Cometary Globule
• XBP — X-Ray Bright Point
• ECA — Electronics Control Assembly
• WKAA — West Kentucky Amateur Astronomers
• CSWA — Committee on the Status of Women in Astronomy
• OSB — Operations Software Branch
• SESD — Science and Engineering Systems Division
• ECF — European Coordinating Facility
• Q&A — qualification and acceptance
• STDN — Satellite Tracking and Data Network
• BCVS — Bibliographic Catalogue of Variable Stars
• PRB — Preliminary Review Board
• DDA — Division on Dynamical Astronomy
• OFAD — Optical Field Angle Distortion
• NCSA — National Center for Supercomputer Applications (Urbana IL)
• STEIS — Space Telescope Electronic Information System
• CAMAC — Computer-Aided Measurement and Control
• LMSC — Lockheed Missile and Space Corporation
• BZ — Brillouin zone - a uniquely defined primitive cell in reciprocal space
• ISPM — International Solar Polar Mission
• ODL — Observation Data Log
• RLOF — Roche Lobe Overflow
• ESB — Engineering Support Branch
• MOID — Minimum Orbit Intersection Distance
• ♅ — Uranus
• NDC — Network Data Center
• SHAR — Stellar Horizon Atmospheric Refraction
• ULE — Ultralow Expansion
• JOP — Joint Observing Program
• FEB — Falling-Evaporating Body
• C&DH — Control and Data Handling
• DDF — Directors Discretionary Funds
• DAV — Deerlick Astronomy Village
• CINEOS — Campo Imperatore Near-Earth Object Survey
• TYC — Tycho

• SGRB(S) — short gamma ray burst(s)
• ICRC — International Cosmic Ray Conference
• OSCAR — Orbital Satellite Carrying Amateur Radio
• PNN — Planetary Nebula Nucleus
• IWCA — International Workshop on Cometary Astronomy
• OAO — Orbiting Astronomical Observatory
• TO — target of opportunity
• ULX — Ultra-Luminous X-ray source
• SSD — Science Support Division
• EAPJ — Electronic AstroPhysical Journal Letters
• SUPRIME — SUbaru PRIME focus CAMera
• WBHF — WideBand High Frequency
• NIU — NASCOM Interface Unit
• HESI — High Energy Solar Imager
• ASKAP — Australian Square Kilometre Array Pathfinder
• GRB — Gamma Ray Bursters
• TML — Total Mass Loss
• NLTE — Non-local Thermodynamic Equilibrium
• SCP — Science Data Analyst
• ASCA — Advanced Satellite for Cosmology and Astronomy
• NGS — New Generation STAR
• HVPS — High Voltage Power Supply
• SMM — Spectro-Mirror Mechanism
• SID — Software Implementation Directive
• OPUS — OSS and PODPS Unified Systems
• IAU — International Astrophysical Union
• WOMBAT — Wavelength-Oriented Microwave Background Analysis Team
• CCO — Central Compact Object
• EHB — Extreme Horizontal Branch
• NLST — National Large Solar Telescope
• GDSO — Georgi Dobrovolski Solar Observatory
• MONS — Measuring Oscillations in Nearby Stars
• SMO — Servicing Mission Office
• RPSS — Remote Proposal Submission System
• RIACS — Research Institute for Advanced Computer Science
• SSSPM — SuperCOSMOS Sky Survey Proper Motion
• DSOS — Dish Surface Optimization System
• ASTRO — Autonomous Space Transport Robotic Operations
• SIAF — Science Instrument Aperture File
• DAG — Doğu Anadolu Gozlemevi
• OV — Orbital Verification
• MW — Milky Way
• SS — Safing System
• NEAP — Near Earth Asteroid Prospector
• SDAS — Scientific Data Analysis System
• CHIP — Cosmic Hot Interstellar Plasma
• CRAQ — Centre for Research in Astrophysics of Québec
• MSO — Mount Stromlo Observatory
• PGPLOT — FORTRAN subroutine library for plotting graphics
• AMASE — Astrophysics Multi-Spectral Archive Search Engine

• MLY — Mega Light Year
• MEM — Maximum Entropy Method
• STIC — Space Telescope Institute Council
• HLO — High Light Output
• SSRV — Space Science Reviews
• TIC — Tycho Input Catalog
• LSG — Liaison Scientists Group
• SMC — Small Magellanic Cloud
• VGRF — Variable-Gravity Research Facility
• DOV — Director of Orbital Verification
• NS — Neutron Star
• CCMS — Command Control and Monitor System
• START — Solar Thermal Analysis Review and Training
• EMP — Ephemerides of Minor Planets
• SS — System Simulator
• SPWEA — Space Weather
• IV — intra vehicular
• R-L — Richardson-Lucy
• LOSS — Lick Observatory Supernova Search
• EAC — European Astronaut Centre
• SQIID — Simultaneous Quad Infrared Imaging Device
• VPC — viewport coordinates
• AJD — Astronomical Julian Day
• ACT — Astrographic Catalog Tycho
• SAOC — SAO Catalog
• DEFCAL — deflection calibration
• PROS — Post Reduction Offline Software
• SOSYR — Solar System Research
• RTC — Researching The Cosmos
• SER — Systems Engineering Report
• AOC — Award Of Contract
• VPU — video processing unit
• PNS — Pulsed Neutron Source
• TCG — Geocentric Coordinate Time
• DSN — deep-space network
• SCAC — Science Computing Advisory Commitee
• GRS — Great Red Spot
• SPYBAL — spectrum Y balance
• UGZ — UG Z Camelopardalis
• CXO — Chandra X-ray Observatory
• LP — Lonely Planet
• WRO — Warren Rupp Observatory
• ATPI — Astronomy Through Practical Investigations
• BCD — Basic Calibrated Data
• AER — Astronomy Education Review
• SEST — Swedish-ESO Submillimetre Telescope
• CST — Constant
• SIS — SETI (Search for Extra-Terrestial Intelligence) Intercept System
• MGS — Mars Global Surveyor
• MYSO — Massive Young Stellar Object

• CFHT — Canada-France-Hawaii Telescope
• LEST — Large Earth-based Solar Telescope
• TAC — telemetry and command processor
• PAR — Photon Activity Rate
• TAAA — Tucson Amateur Astronomy Association
• SUGRA — Supergravity
• USMP — United States Microgravity Payload
• RSFC — Radially Stratified Flame Core
• CST — Constant Strain Triangle
• PEPSI — PEP System
• MU — Memory Unit
• MPEC — Minor Planets Electronic Circular
• SDA — Science Data Analyst Small Computer Systems Interface
• US/PS — see PRESTO
• SDM — Secondary Deployment Mechanism
• WGAS — Working Group on Astronomical Software
• PACS — Photoconductor Array Camera and Spectrometer
• MKO — MAUNA KEA OBSERVATORY
• LV — Lunette Verte
• FGC — Flat Galaxy Catalogue
• PMPS — Parkes Multibeam Pulsar Survey
• SOB — Science Observatory Branch
• PFM — Pre-Flight Module
• PUAMS — Publications of the Astronomical Institute of the University of Amsterdam
• EF — Event Foreground
• SDF — Science Data Formatter
• PEPE — Plasma Experiment for Planetary Exploration
• EOSL — Earth Observation Systems Laboratory
• TFOV — target field of view
• LHS — Luyten Half-Second
• SINGS — Spitzer Infrared Nearby Galaxies Survey
• CCITT — Consultative Committee on International Telegraph & Telephone
• OST — Observation Sequence Table
• LRG — Luminous Red Galaxy
• WCS — World Coordinate System
• NIR — Near Infrared Research
• DCL — Digital Control Language
• ACA — Atacama Compact Array
• IPMO — Isolated Planetary-Mass Objects
• SSA — Star Selector Assembly
• SPE — Static Phase Error
• ACK — acknowldgement message
• WFCAM — Wide Field Camera
• RTLT — Round Trip Light Time
• MEPCO — Meeting of European Planetary and Cometary Observers
• SDD — Single Dish Data
• LDE — Long Duration Event
• TUASR — Tokyo University Institute of Space and Aeronautical Science Report
• CTRF — Celestial and Terrestrial Reference Frames
• MOMV — Manned Orbital Maneuvering Vehicle

• REPT — Relativistic Electron-Proton Telescope
• NIMS — Near-Infrared Mapping Spectrometer
• TZO — Thorne-Å»ytkow Object
• E — Eclipsing
• PTF — Payload Test Facility
• VMC — Velocity Modulating Camera
• HSI — Host System Interface
• SAO — Swinburne Astronomy Online
• MMF — Moving Magnetic Feature
• ACIS — Advanced CCD Imaging Spectrometer
• UKST — United Kingdom Schmidt Telescope
• CRRES — Combined Release Radiation Effects Satellite
• UGWZ — U Gem variable type star (WZ Sagittae sub-type)
• MOST — Microvariability and Oscillations of STars Telescope
• CEP — CEPheid
• CMOS — Complimentary Metal Oxide Semiconductor
• CODE — Creation Out of Deep Energy
• SCOA — Smithsonian Contributions to Astrophysics
• CIAO — Coronagraphic Imager with Adaptive Optics
• CIB — Cosmic Infrared Background
• CCDS — Centers for the Commercial Development of Space
• EUSO — Extreme Universe Space Observatory
• SFN — Star Formation Newsletter
• OAOT — Orbiting Astronomical Observatory Technology
• QEH — Quantum Efficiency Hysteresis
• STVSW — Space Telescope Verification Software
• AH — ampere hours
• UGWZ — UG WZ Sagittae
• SEST — Swedish ESO Submillimeter Telescope
• DM — Dark Matter
• EDB — Engineering Data Base
• PBO — Pine Bluff Observatory
• WSGS — White Sands Ground Station
• GIMP — Geomagnetically Induced Motion Problem
• STAC — Space Telescope Advisory Council
• AC — Ascendant Cusp
• SOFIA — Stratospheric Observatory for Infrared Astronomy
• SPSO — Science Program Selection Office
• IMIO — Image Input/Output
• EED — Extracted Engineering Data
• ECEF — EarthCentered EarthFixed
• ILOC — International Lunar Occultation Center
• BSS — Bigelow Sky Survey
• PM — Primary Mirror
• LPICO — Lunar and Planetary Institute Contributions
• UKIDSS UKIRT — Infrared Deep Sky Survey
• NEAT — Near Earth Asteroid Tracking
• SCP — Small Computer Systems Interface
• MDB — multiplexed data bus
• EIT — Extreme Ultraviolet Imaging Telescope

• ODS — Our Dark Skies
• HAC — Huachuca Astronomy Club
• DRS — Direct Receiving Station
• TRACE — Transition Regional and Coronal Explorer
• NGT — Next Generation Telescope
• DE — Dwarf elliptical
• WFPC2 — Wide Field Planetary Camera-2
• SOARD — Steward Observatory Asteroid Relational Database
• DRD — Data Requirements Document
• CCAS — Cape Cod Astronomical Society
• ESTEC — European Space Research and Technology Center
• SWAN — Solar Wind ANisotropy
• ERRSAC — Eastern Regional Remote Sensing Applications Center
• BATTERS — Bisei Asteroid Tracking Telescopes for Rapid Survey
• RS — Reed-Solomon error detection
• SOGS — Science Operations Ground System
• ISEE — International Sun Earth Explorer
• SHAD — Stellar Horizon Attitude Determination
• CDBS — Calibration Data Base System
• AOSS — AURA Observatory Support Services
• SIMM — Standard Inline Memory Module
• SAREX — Search and Rescue Exercise
• SMS — Sun Moon and Stars
• CHZ — Circumstellar Habitable Zone
• DBSA — Database and System Administration team
• NLTT — New Luyten Two-Tenths
• RORF — Radio/Optical Reference Frame
• WXQ — Waxing Quarter
• TO — Texas Instruments
• PTF — Palomar Transient Factory
• ABRIXAS — A BRoadband Imaging X-ray All-sky Survey
• BRAS — Baton Rouge Astronomical Society
• ESIS — European Space Information System
• PWN — Pulsar Wind Nebula
• SPB — Science Planning Branch
• MSC — Mission Support Calibration
• SSB — Science Software Branch
• RCS — Readiness Control System
• GRAND — Gamma Ray and Neutron Detector (NASA)
• MPP — Multi-Pinned-Phase
• MEV — million electron volts
• RWA — Reaction Wheel Assembly
• SIP — Software Implementation Plan
• CRL — Compound Refractive Lens
• MOSS — Moving Object Support System
• BSS — Blue Straggler Star
• PASS — POCC Application Software Support
• ASIAA — Academia Sinica Institute of Astronomy and Astrophysics
• GHZ — Galactic Habitable Zone
• VISTAR — visible space tracking and reconnaissance

• HSC — Hierachical Storage Controller
• DIG — Dwarf Irregular Galaxy
• TRB — Test Review Board
• NFF — New Firm Formation
• MLSO — Mauna Loa Solar Observatory
• BIMA — Berkeley-Illinois-Maryland Array
• SSC — STEIS Steering Committee
• EBL — Extragalactic Background Light
• SCL — Service Control Level
• SMC — Standard Model of Cosmology
• CA — Coronagraphic Apodizer
• SPG — Special Projects Group
• WFAO — Wide Field Adaptive Optics
• MUF — Mysterious Unknown Force
• OW — Outer Wall
• PDS — Photometric Data Systems
• RSA — Revised Shapley-Ames
• MT — Moving Target
• CGRO — Compton Gamma Ray Obsrvatory
• LONEOS — Lowell Observatory Near-Earth-Object Search
• DCX — Delta Clipper Experimental
• GASA — Graduate Astronomy Students Association
• ALTS — Astronomy Lunch Time Seminar
• MFP — magnetic field perturbation theory
• MUSES — MU Space Engineering Spacecraft
• WF/PC — Wide Field/Planetary Camera
• CNO — Carbon-Nitrogen-Oxygen
• EOR — End of Record
• MOR — Mission Operations Room
• LOTIS — Livermore Optical Transient Imaging System
• HPR — Hardware Problem Report
• SPS — Solar Power Satellite
• AMSU — Advanced Mass Spectrometry Unit
• STAN — Space Telescope Analysis Newsletter
• EOL — Earth Observing Laboratory (formerly ATD)
• ULIRG — Ultraluminous Infrared Galaxy
• NODO — NASA Orbital Debris Observatory
• SIDS — SI Detector System
• IBBTF — Imagination Baffled By The Facts
• VSOLB — Variable Star Observers League in Japan - Bulletin
• GRAB — Galactic Radiation and Background
• LSST — Large Synoptic Survey Telescope
• CGRO — Compton Telescope
• CODMAC — Committee on Data Management and Computing
• RSAA — Research School of Astronomy and Astrophysics
• SLSN-I — hydrogen-poor SLSNe
• SWRI — Southwest Research Institute
• SSRT — Single Stage Rocket Technology
• GCI — geocentric intertial
• RVMA — Reviews in Modern Astronomy

• CTWG — Calibration Targets Working Group
• MICO — Multi-year Interactive Computer Almanac
• OBP — Onboard Processor
• UAO — University of Arizona Observatories
• GKS — Graphic Kernel System
• AD — Analog to Digital
• OGLE — Optical Gravitational Lensing Experiment
• SDH — science data header
• SVAL — Soviet Astronomy Letters
• HMC — Halley Multicolor Camera
• SFD — SXT Full Disk
• PW&SO — Publications of the Warner Swasey Observatory
• VF — Variable Frequency
• SSS — SuperCOSMOS Sky Surveys
• MIPS — Multi-band Imaging Photometer
• SB — Super Bright
• NOMAD — Naval Observatory Merged Astrometric Dataset
• SPC — Short Period Comets
• SAR — Software Analysis Room
• RMS — Remote Manipulator System
• SXG — Spectrum-X-Gamma
• TPI — Technical Proposal Instructions
• SIPE — Science Instrument Protective Enclosure
• LSA — Large Science Aperture
• GRU — Ground Replaceable Unit
• TUASB — Tokyo University Institute of Space and Aeronautical Science Bulletin
• SBIG — Santa Barbara Instrument Group
• PFR — Portable Foot Restraint
• GAAC — Gloucester Area Astronomy Club
• SMA — Submillimeter Array
• NTR — Nuclear Thermal Rocket
• SSE — Star Selector Encoder
• EBA — Electronics Bay Assembly
• CCSN — core-collapse supranovæ
• ACYG — Alpha CYGni
• ORD — Operations Requirements Document
• DCMF — Data Capture and Management Facility
• XRB — X-Ray Background
• VVS — Vereniging voor Sterrenkunde
• CVA — Central Valley Astronomers
• RMS — Republic Management Systems, Inc.
• RSS — Rotating Service Structure
• SSPS — Sky Survey Prototype System
• LWS — Long-Wave Spectrograph
• CFS — Chandrasekhar - Friedmann - Schutz instability
• SCUBA-2 — Submillimetre Common User Bolometer Array 2
• LWR — Long Wavelength Redundant
• CGCS — Cool Galactic Carbon Star
• IGI — Interactive Graphics Interpreter
• TAC — The Astronomy Connection

• ASW — Address and Synchronization Word
• CTTS — Classical T Tauri Star
• SXARI — SX ARIetis
• SET — Science, Engineering and Technology
• FRB(S) — gamma ray burst(s)
• MTL — Mission Time Line
• RSG — Red Super Giant
• WAC — Wide Angle Converter
• GTC — Gran Telescopio Canario
• L — Lagrange
• MPS — Microlensing Planet Search
• FAT — Filtered Array Technology
• VCC — Virgo Cluster Catalog
• CVP — Continuously Variable Planetary
• NGC — New General Catalog
• SXPHE — SX PhoEnicis
• SCT — Schmidt-Cassegrain Telescope
• GSY — Galactic Standard Year
• MACRO — Monopoles, Astrophysics, and Cosmic Ray Observatory
• SSPRV — Space and Solar Power Review
• RRL — RR Lyrae
• MPPG — Mars Program Planning Group
• HTFA — High Temperature Flowing Afterglow
• EC — Embedded Cluster
• XRF — X-Ray Flash
• ERO — Extremely Red Object
• LINEAR — Lincoln Near Earth Asteroid Research
• LIC — local interstellar cloud
• LMXB — Low-Mass X-Ray Binary
• ACTS — Advanced Communications Technology Satellite
• WSAL — Winston-Salem Astronomical League
• CCS — Cool Carbon Star
• SCUBA — Submillimetre Common User Bolometer Array
• PGC — Principal Galaxy Catalog
• ARTEMIS — Advanced Relay TEchnology MISsion
• VERA — VLBI Exploration of Radio Astrometry
• GGC — Giant Gravity Core
• WINAR — Windsor Observatory Annual Report
• MSE — Milton S. Eisenhower library
• BCD — Blue Compact Dwarf
• MMA — Milli Modulation Amplitude
• CRSR — Center for Radiophysics and Space Research
• PWHHO — Publications of West Hendon House Observatory, Sunderland
• EGGR — Eggen & Greenstein
• TB — Thermal Balance
• SGD — Solar Geophysical Data
• COHSI — Cambridge OH-Suppression Instrument
• BHAS — Black Hills Astronomical Society
• STIS — Space Telescope Imaging Spectrograph
• EGRET — Energetic Gamma-Ray Experiment Telescope

• LAMO — low altitude mapping orbit
• FIGV — Factor Inercial de Ganho solar do enVidracado
• IAPPP — International Amateur/Professional Photoelectric Photometry
• SZE — Sunyaev-Zeldovich Effect
• UVCS — Ultraviolet Coronal Spectrometer
• IRS — International Reference Star
• RFO — Robert Ferguson Observatory
• EGP — Extrasolar Giant Planet
• TRES — Transatlantic Exoplanet Survey
• TSI — Total Solar Irradiance
• LPCI — Lunar Phases Concept Inventory
• XANES — X-Ray Near Edge Spectroscopy
• ODX — Occular Dynamic eXperiment
• HKO — Hong Kong Observatory
• DES — Dark Energy Survey
• DCB — Design Change Board
• ECO — Earth crossing object
• CTA — Computer Technology Associates (GSFC)
• VIMOS — Visible Multiobject Spectrograph
• CANX — Canadian Advanced Nanospace Experiments
• JSGA — Japan Spaceguard Association
• WHDF — William Herschel Deep Field
• CASA — Common Astronomy Software Applications
• PPM — Positions And Proper Motions (catalog)
• WDM — Warm Dark Matter
• EPOS — European Project on the Sun
• TLP — The Lunascan Project
• SAMPEX — Solar Anomalous And Magnetospheric Particle Explorer (spacecraft)
• SIPS — Spectral Image Processing System
• NA — Negative Alignment
• DN — Dwarf Novae
• IYA — International Year of Astronomy
• ♇ — Pluto
• LOFAR — Low Frequency Array
• NGST — Next Generation Space Telescope
• SRC — Science Research Council (formerly DSIR) (U.K.)
• UG — U Geminorum
• MUNICS — MUnich Near-Infrared Cluster Survey
• VSSSC — Variable Star Section Special Circulars
• LN2 — liquid N2
• RTA — Real Time Activity
• TESS — Transiting Exoplanet Survey Satellite
• DMS — Daily Mission Schedule
• DIB — Diffuse Interstellar Band
• RAMBO — Robust associations of massive baryonic objects
• ITT — International Telephone and Telegraph Corporation
• OAO — Okayama Astrophysical Observatory
• LST — Large Stellar Telescope
• WDS — Washington Double Star
• UVOT — Ultraviolet Optical Telescope

• VISTA — Visible and Infrared Survey Telescope for Astronomy
• TAI — International Atomic Time (Temps Atomique International) [to 2015 July 1st, 35s ahead of UTC; from 2015 July 1st, 36s ahead of UTC.]
• LETGS — Low Energy Transmission Gratings Spectrometer
• MHGL — Mexican Hat Gravitational Lens
• MGC — Millennium Galaxy Catalogue
• QBSA — Quarterly Bulletin on Solar Activity
• CSM — Central Star Magnitude
• MMTO — Multiple Mirror Telescope Observatory
• LMS — Lower Main Sequence
• WFAP — Wide Field Astronomy Panel
• MG — Meteor Garden
• CMF — Core Mass Function
• TMN — Tokyo Meteor Network
• LDS — Luyten Double Star
• BHC — Black Hole Candidate
• MARS — MOUNTAIN ASTRONOMICAL RESEARCH SECTION
• EOT — End Of Tape
• IMOA — International Museum of Astronomy
• ASWG — ATST (Advanced Technology Solar Telescope) Science Working Group
• LFSA — List of Frequently Seen Acronyms
• EVGA — European VLBI Group for Geodesy and Astrometry
• NDV — NASP Derived Vehicle
• FRONT — Front Range Observational Network Testbed
• SWIRE — Spitzer Wide-area InfraRed Extragalactic survey
• QE — Quality Engineer
• ROTSE — Robotic Optical Transient Search Experiment
• SGEMP — Space-Generated Electromagnetic Pulse
• WASP — Wide Angle Search for Planets
• CBP — Collateral Benefits Plan
• CES — Central Electromagnetic Shower
• SVA — Soviet Astronomy
• R — Ray
• NEAF — North East Astronomy Form
• SPD — Science Programs Division
• WUVC — Wezen Updated Variability Catalogue
• SITB — System Integration and Testing Branch
• MLPS — Mid-Latitude Plasma Structuring
• SDAS — Scarborough And District Astronomy Society
• TLP — Transient Lunar Phenomenon
• PSR — Pulsar
• WAT — Wide Angle Tail
• VOS — Virtual Operating System
• CGCS — Catalogue of Galactic Carbon Stars
• NIR — Near Infrared Reflection
• SAREX — Space Amateur Radio Experiment
• LMT — Large Millimeter Telescope
• ADOR — Astrometry and Design Operations Review
• GMOS — Gemini Multi-Object Spectrographs
• FD — File Descriptor
• ICET — International Center for Earth Tides

• TAAS — The Albuquerque Astronomical Society
• EMU — Extra-vehicular Mobility Unit
• R&R — Reproducibility And Repeatability
• CGSS — Catalogue of Galactic S Stars
• ISSA — Infrared Sky Survey Atlas
• NEO — Near-Earth Object - Non-combatant Evacuation Operations
• B — Barnard
• VLB — Very Long Baseline
• MRSRM — Mars Rover and Sample Return Mission
• WFIS — Wide-Field-of-view Imaging Spectrometer
• O — Oblivion
• NCP — North Celestial Pole
• PEGA — Programs in Extra-Galactic Astronomy
• MMTF — Maryland-Magellan Tunable Filter
• WBS — Wide Band Spectrometer
• STARS — Seismic Telescope for Astrophysical Research from Space
• EMB — Earth Moon Barycenter
• VRAM — Virtual Random Access Memory
• NTT — New Technology Telescope
• IOTA — Infrared-Optical Telescope Array
• TAMS — Terminal-Age Main Sequence
• CRAF — Committee on Radio Astronomy Frequencies
• NLDP — National Launch Development Program
• URPX — Uranian Ring Plane Crossing
• WBS — Work Breakdown Schedule
• WSF — Wake Shield Facility
• WYBT — Whole Year Blazar Telescope
• PSS — Palomar Sky Survey
• WYAS — West Yorkshire Astronomical Society
• LM — Low Mass
• BCEP — Beta CEPhei
• CSMA — Committee on the Status of Minorities in Astronomy
• LTP — Lunar Transient Phenomenon
• DRAO — Dominion Radio Astrophysical Observatory
• MOST — Molonglo Observatory Synthesis Telescope
• ♆ — Neptune
• HDF — Hubble Deep Field
• BO — Biological Origin
• XMM — X-ray Multi- Mirror satellite
• JKT — Jacobus Kapteyn Telescope
• TSRS — Trieste Solar Radio System
• MBA — Main-Belt Asteroid
• SOFA — Selectable Optical Filter Assembly
• UCLAP — University of California Los Angeles - Astronomical Papers
• ARAS — Astronomical Ring for Access to Spectroscopy
• CIO — Catalog of Infrared Observations
• LS — List Star
• SGC — Southern Galaxy Catalogue
• UKSA — United Kingdom Space Agency
• HLC — Heavy Lift Capability

• LDN — Lynds Dark Nebulae
• CSE — Circumstellar Envelope
• WAA — Washington Area Astronomers
• EO — Earth Observatory
• WAPP — Wide-base Arecibo Pulsar Processor
• SMASH — Survey of MAgellanic Stellar History
• EPD — Expected Planetary Differences
• SUSI — Sydney University Stellar Interferometer
• ALIS — Airborne Laser Isotope Spectrometer
• BE — Bright Elements
• HS — horizontal system
• SSDA — Solar System Data Archive
• MBH — Massive Black Hole
• EB — Eclipsing Beta
• EPAO — Educational and Public Affairs Office
• LAL — LALande
• WBFI — Wide Band Filter Imager
• TR — TRansit
• TAA — Tasmanian Amateur Astronomers
• BS — Bica and Schmitt
• LLNL — Lawrence-Livermore National Laboratory
• RTPW — Rapid True Polar Wander
• RS — Resource Scheduler
• AA — Academic Affairs
• OTS — Oasa Tamura Sugitani
• SAD — Supra-Arcade Downflow
• RCB — R Coronae Borealis
• AZA — Analiza Zanieczyszczenia Atmosfery
• SGRA — School of Galactic Radio Astronomy
• HBOP — Hale-Bopp comet
• STAT — Space Telescope Astrometry Team
• NHICAT — Northern HIPASS CATalog
• SG — Star Graph
• AN — Astronomische Nachrichten
• VLM — Very Low Mass
• MPAS — Mornington Peninsula Astronomical Society
• VBT — Vainu Bappu Telescope
• INFOL — Ingredient Necessary FOr Life
• F — Fraunhofer lines
• LTSA — Long-Term Space Astrophysics
• SZA — Sunyaev-Zeldovich Array
• LTT — Luyten Two-Tenths
• LSB — Low Surface Brightness
• M — Mira
• JAC — Japan Astronomical Circular
• TTOC — Tape Table of Contents
• MWD — Magnetic White Dwarf
• CSF — Clustered Star Formation
• VMO — Valley of the Moon Observatory
• ING — imagining new gastronomy

• LSVT — Large Solar Vacuum Telescope
• LADC — Longitudinal Atmospheric Dispersion Compensator
• NESS — Near Earth Space Surveillance
• WFAU — Wide-Field Astronomy Unit
• HETE-2 — high energy transient explorer
• USOC — Unified System Orbit Computation
• ADH — Average Daily Hours
• IRD — Interface Requirements Document
• SFAC — Santa Fe Astronomy Club
• PZT — Photographic Zenith Tube
• WCT — Window Correction Table
• SDS — Star Diagnosis System
• UHTC — Ultra High Transmission Coatings (Meade)
• FIMS — Fors Instrumental Mask Simulator
• MXRB — Massive X-Ray Binary
• ACPG — Astronomical Community Participation Group
• LDE — Long Decay Event
• REM — Rat Enclosure Module
• DOS — Degrees Of Separation
• GMT — Greenwich Mean Time (now obsolete)
• CAL — Casual Astronomy League
• PROPLYD — Protoplanetary Disk
• WFPCII — Replacement For WFPC
• OZ — Objective Zenith
• SCO — Software Change Order
• CP — Chemically Peculiar
• VSAT — Very Small Angle Tracker
• SLSN-R — radioactively powered SLSNe