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Compiled by James Marshall
e-mail me
Last Updated on November 1, 2006
Total abbrev/acro count: 806
[Feel free to distribute it as you like, but preferably as the complete list with all headers, footers, etc. intact. And remember, if you have any new abbreviations or acronyms of this type that I can add to this list, please e-mail me with them so that I can update my list! Some abbrevs/acros are listed more than once with a different definition; these are only counted once in the total count given above. So the total count is for different abbrevs/acros, not different definitions.]
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
A A&A Astronomy and Astrophysics AACS Attitude and Articulation Control Subsystem AAO Anglo-Australian Observatory AAS American Astronomical Society AAS American Astronautical Society AAVSO American Association of Variable Star Observers AC Atlas Centaur ACE Advanced Composition Explorer ACF Automated Control Function ACR Active Cavity Radiometer ACRIM ACR Irradiance Monitor ACRV Assured Crew Return Vehicle ACRV Astronaut Crew Rescue Vehicle ACTS Advanced Communications Technology Satellite ADEOS Advanced Earth Observing Satellite ADFRF Ames-Dryden Flight Research Facility ADS Astrophysical Data System (at Havard-Smithsonian CfA) ADS Aitken Double Star catalog AE Arianespace SA, Paris AEPI Atmospheric Emissions Photometric Imaging AF Air Force AFETR USAF's ETR AFGWC Air Force Global Weather Center AFP Air Force Program AFPRO Air Force Plan Representative Office AFRSI Advanced FRSI AFWTR USAF's WTR AGB Asymptotic Giant Branch AGE Auxiliary Ground Equipment AGN Active Galactic Nucleus AGU American Geophysical Union AIAA American Institute of Aeronautics and Astronautics AIPS Astronomical Image Processing System AIRS Atmospheric Infrared Sounder AJ Astronomical Journal ALAE Atmospheric Lyman-Alpha Emissions ALDP Advanced Launch Development Program ALEXIS Array of Low Energy X-ray Imaging Sensors ALPO Association of Lunar and Planetary Observers ALS Advanced Launch System AMOS Air Force Maui Optical System AMSR Advanced Microwave Sounding Radiometer ANSI American National Standards Institute AOA Abort Once Around (shuttle abort plan) AOA Angle Of Attack AOCS Attitude and Orbit Control System APE Auroral Photography Experiment ApJ Astrophysical Journal APL Applied Physics Laboratory (at Johns Hopkins) APM Attached Pressurized Module (a.k.a. Columbus) APM Atmospheric Particle Monitor APT Automatic Picture Transmission APT Automatic Photoelectric Telescope APU Auxiliary Power Unit ARC Ames Research Center (NASA) ARC Astrophysical Research Consortium ARISTOTELES Applications and Research Involving Space Technologies Observing the Earth's Field from Low Earth Orbiting Satellite ARRL American Radio Relay League ARTEMIS Advanced Relay TEchnology MISsion ASA Astronomical Society of the Atlantic ASCO Arab Satellite Communications Organization ASE Advanced Space Engine ASEM Assembly of Station by EVA Methods ASI Agenzia Spaziale Italiano ASP Astronomical Society of the Pacific ASRM Advanced Solid Rocket Motor ASS Antenna Support Structure ASTER Advanced Spaceborne Thermal Emission and Reflection ASTRO Space astrophysics laboratory ATAL Alternate Transoceanic Abort Landing ATCS Active Thermal Control System ATDRS Advanced Tracking and Data Relay Satellite ATLAS Atmospheric Laboratory for Applications and Science ATM Amateur Telescope Maker ATM Apollo Telescope Mount (on Skylab) ATMOS Atmospheric Trace Molecule Spectroscopy ATO Abort To Orbit ATSR Along Track Scanning Radiometer AU Astronomical Unit AURA Association of Universities for Research in Astronomy AVHRR Advanced Very High Resolution Radiometer AW&ST Aviation Week and Space Technology AXAF Advanced X-ray Astrophysics Facility B BAe British Aerospace BATSE Burst And Transient Source Experiment BBXRT Broad-Band X-Ray Telescope BC Bolometric Correction BD Bonner Durchmusterung (catalog) BDB Big Dumb Booster BECO Booster Engine Cutoff BEM Bug-Eyed Monster BFC Backup Flight Computer BFCS Backup Flight Control System BFS Backup Flight System BH Black Hole BIMA Berkeley Illinois Maryland Array BIMDA Bioserve-Instrumentation Technology Associate Materials Dispersion Analysis BMDO Ballistic Missile Defense Office BMFT Bundesministerium fuer Forschung und Technologie BNSC British National Space Centre C C&T Communications & Tracking CADH Communications and Data Handling CARA Center for Astrophysical Research in Antarctica CASCA Canadian Astronomical Society CASSINI Saturn orbiter and Titan probe CATS Cheap Access To Space CBR Cosmic Background Radiation CCAFS Cape Canaveral Air Force Station CCD Charge-Coupled Device CCDS Centers for the Commercial Development of Space CCRS Canada Centre for Remote Sensing CCSDS Consultative Committee for Space Data Systems CD-ROM Compact Disk Read-Only Memory CDA Command and Data Acquisition CDDT Countdown demonstration Test CDM Cold Dark Matter CDS Command and Data Subsystem CEA Center for EUV Astrophysics CELSS Controlled Ecological Life Support System CERES Clouds and Earth's Radiant Energy System CETA Crew and Equipment Translation Aid CfA Harvard-Smithsonian Center For Astrophysics CFC ChloroFluoroCarbon CFF Columbus Free Flyer CFHT Canada-France-Hawaii Telescope CfPA Center For Particle Astrophysics (Berkeley) CFRP Carbon Fibre Reinforced Plastic CG Center of Gravity CGF Crystal Growth Furnace CGRO Compton Gamma Ray Observatory CHARA Center for High Angular Resolution Astronomy CIRRIS Cryogenic InfraRed Radiance Instrument for Shuttle CIS Commonwealth of Independent States CIT Circumstellar Imaging Telescope CITA Canadian Institute for Theoretical Astrophysics CITE Cargo Integration Test Equipment CLAES Cryogenic Limb Array Etalon Spectrometer CM Command Module CM Center of Mass CM Central Meridian CMB Cosmic Microwave Background CMBR Cosmic Microwave Background Radiation CMCC Central Mission Control Centre CNES Centre National d'Etude Spatiales CNO Carbon-Nitrogen-Oxygen CNSR Comet Nucleus Sample Return COBE COsmic Background Explorer COMPTEL COMPton TELescope COMSAT Communications Satellite (Corporation) COSTAR Corrective Optics Space Telescope Axial Replacement CPCG Commercial Protein Crystal Growth CR Correlation Radiometer CRAF Comet Rendezvous/Asteroid Flyby CREAM Cosmic Radiation Effects and Activatiom Monitor CRIM Commercial Refrigerator Incubator Module CRISTA Cryogenic Infrared Spectrometer Telescope for Atmosphere CRL Communication Research Lab CRRES Combined Release/Radiation Effects Satellite CSA Canadian Space Agency CSIRO Commonwealth Scientific and Industrial Research Organization CSM Command and Service Module CSTC Consolidated Satellite Test Center CTIO Cerro Tololo Interamerican Observatory CV Cataclysmic Variable CXBR Cosmic X-ray Background Radiation CYSB Cape York Space Base CYSF Cape York Space Facility CYSP Cape York Space Port CZCS Coastal Zone Color Scanner D DAC Delayed Action Command DACS DATA Acquisition and Control Subsystem DAO Dominion Astrophysical Observatory DARA Deutsche Agentur fuer Raumfahrtangelegenheiten DARPA Defense Advanced Research Projects Agency DC Delta Clipper DCA Defense Communications Agency DCCS Dynamic Cell Culture System DCX Delta Clipper eXperimental DDCU DC-to-DC Converter Unit DDTE Design, Development, Test, and Evaluation Dec Declination DESAT Desaturation DFRC Dryden Flight Research Center DFRF Dryden Flight Research Facility DIRBE Diffuse Infrared Background Experiment DLR Deutsche Forschungsanstalt fuer Luft- und Raumfahrt DM Dark Matter DMR Differential Microwave Radiometer DMSP Defense Meteorological Satellite Program DOD Department Of Defense DOE Department Of Energy DOE Department of Education DOE Department of the Environment DOMSAT Domestic Satellite DOR Differenced One-way Range DOT Department Of Transportation DPM Drop Physics Module DPSS DATA Processing Services Subsystem DRAO Dominion Radio Astrophysical Observatory DRSS DATA Relay Satellite System DSCS Defense Satellite Communications System DSN Deep Space Network DSO Detailed Supplementary Objective DSP Defense Support Program DSS Deep Space Station DSSC Deep Space Station Complex E E Elliptical (for galaxies) EAFB Edwards Air Force Base ECO Eternally Collapsing Object ECS Environmental Control System EDC EROS Data Center EDO Extended Duration Orbiter EDOMP EDO Medical Project EDRS European Data Relay Satellite EDS Electronic Data Systems EGRET Energetic Gamma Ray Experiment Telescope EJASA Electronic Journal of the Astronomical Society of the Atlantic ELDO European Launcher Development Organisation ELV Expendable Launch Vehicle EMU Extravehicular Mobility Unit ENAC Energetic Neutral Atom Camera ENACEOS ENAC for EOS ENAP Energetic Neutral Atom Precipitation ENSO El Nino/Southern Oscillation EODC Earth Observation Data Centre EOS Earth Observing System EOS Electrophoresis Operations in Space EOSP Earth Observing Scanning Polarimeter EPD Energetic Particles Detector ER Eastern Range ERBE Earth Radiation Budget Experiment EROS Earth Resources Observations System ERS Earth Resources Satellite ERS European Remote Sensing ERS Environmental Research Satellite ESA European Space Agency ESIS European Space Information System ESO European Southern Observatory ESOC European Space Operations Centre ESPC European Space Power Conference ESRIN European Space Research Institute ESRO European Space Research Organisation ESTEC European Space Research and Technology Centre ET External Tank ET Ephemeris Time ETE End-to-End ETM Enhanced Thematic Mapper ETR Eastern Test Range EUMETSAT European Meterological Satellite Organisation EURECA European Retrievable Carrier EUTELSAT European Telecommunications Satellite Organization EUV Extreme UltraViolet EUVE Extreme UltraViolet Explorer EVA Extravehicular Activity F FAP Freedom Attached Payloads FAST Fast Auroral SnapshoT explorer FBV Fuel Bleed Valve FEM Flight-Engineering Model FFCC Free-Flyer Control Centre FFT Fast Fourier Transform FGS Fine Guidance Sensors FHST Fixed Head Star Trackers FIR Far InfraRed FIRAS Far InfraRed Absolute Spectrophotometer FITS Flexible Image Transport System FOC Faint Object Camera FOLD Federally-Owned LANDSAT Data FOS Faint Object Spectrograph FPD Flight Projects Directorate FPM Fiber Pulling in Microgravity FRC Flight Research Center FRED Space Station Freedom FRF Flight Readiness Firing FRR Flight-Readiness Review FRSI Flexible Reusable Surface Insulation FTS Flight Telerobotic Servicer FUSE Far Ultraviolet Spectroscopic Explorer FWHM Full Width at Half Maximum G GAS Get-Away Special GBT Green Bank Telescope GC Galactic Center GC Globular Cluster GCVS General Catalog of Variable Stars GDCLS General Dynamics Commercial Launch Services GDS Great Dark Spot GEM Giotto Extended Mission GEM Graphite Epoxy Motor GEO Geosynchronous Earth Orbit GEODSS Ground-based Electro-optical Deep-space Surveillance System GGM Goskogidromet/Gidromettsentr GHA Greenwich Hour Angle GHRS Goddard High Resolution Spectrograph GIF Graphics Interchange Format GISS Goddard Institute for Space Studies GLOMR Global Low-Orbiting Message Relay GMC Giant Molecular Cloud GMRT Giant Meter-wave Radio Telescope GMS Geostationary Meterological Satellite GMT Greenwich Mean Time GNC Guidance, Navigation, and Control GOES Geostationary Orbiting Environmental Satellite GOMOS Global Ozone Monitoring by Occultation of Stars GOMR Global Ozone Monitoring Radiometer GOSAMR Gelation of Soils: Applied Microgravity Research GOX Gaseous OXygen GPC General Purpose Computer GPPF Gravitational Plant Physiology Facility GPS Global Positioning System GR General Relativity GRO Gamma Ray Observatory GRS Gamma Ray Spectrometer GRS Great Red Spot GRTLS Glide RTLS GRU Glavnoye Razvedivatel'noye Upravileniye GSC Guide Star Catalog GSFC Goddard Space Flight Center GSO GeoSynchronous earth Orbit GST Greenwich Sidereal Time GTO Geostationary Transfer Orbit GUGK Glavnoye Upravileniye Geodesii i Kartografii H HAINS High Accuracy Inertial Navigation System HALOE Halogen Occultation Experiment HAO High Altitude Observatory HB Horizontal Branch HCI Highes Communications, Inc HCMM Heat Capacity Mapping Mission HD Henry Draper catalog entry HDE Henry Draper Extension HDM Hot Dark Matter HEAO High Energy Astronomical Observatory HeRA Hermes Robotic Arm HF High Frequency HGA High Gain Antenna HH Hitchhiker HIRDLS High Resolution Dynamics Limb Sounder HIRIS High Resolution Imaging Spectrometer HIRS High Resolution Infrared Radiation Sounder HJD Helicentric Julian Date HLC Heavy Lift Capability HLV Heavy Lift Vehicle HMC Halley Multicolor Camera HOTOL HOrizontal TakeOff and Landing HPFTP High Pressure Fuel Turbopump HPOTP High Pressure Oxidizer Turbopump HR Hertzsprung-Russell HRDI High Resolution Doppler Imager HRMS High Resolution Microwave Survey HRI High Resolution Imager HRPT High Resolution Picture Transmission HRSC High Resolution Stereo Camera HRSI High-temperature Reusable Surface Insulation HRSR High-Resolution Scanning Radiometer HSP High Speed Photometer HST Hubble Space Telescope HTHL Horizontal Takeoff Horizontal Landing HTVL Horizontal Takeoff Vertical Landing HUT Hopkins Ultraviolet Telescope HV High Voltage I IAPPP International Amateur/Professional Photoelectric Photometry IAU International Astronomical Union IAUC IAU Circular IBSS Infrared Background Signature Survey IC Index Catalog ICE International Cometary Explorer IDA International Dark-sky Association IDL Interactive Data Language IFEA Integrated Furnace Experiment Assembly IGBP International Geosphere/Biosphere Programme IGM InterGalactic Medium IGY International Geophysical Year IKI Institut Kosmischeskikh Issledovaniya IVT Interface Verification Test IML International Microgravity Lab IMO International Meteor Organization IMU Inertial Measurement Unit INCO Integrated Communications Officer INMARSAT International Maritime Satellite INTELSAT International Telecommunications Satellite IoA Institute Of Astronomy (Cambridge) IOBM In Ocean By Mistake IOC In-Orbit Checkout and Calibration IOTA Infrared-Optical Telescope Array IOTA International Occultation Timing Association IPAC Infrared Processing & Analysis Center IPMP Investigations into Polymer Membrane Processing IPS Inertial Pointing System IR InfraRed IRAF Image Reduction and Analysis Facility IRAS InfraRed Astronomical Satellite IRFNA Inhibited Red Fuming Nitric Acid ISAMS Improved Stratospheric and Mesospheric Sounder ISAS Institute of Space AND Astronautical Science ISEP Isolated/Stabilized Exercise Platform ISM InterStellar Medium ISO Imaging Spectrometic Observatory ISO Infrared Space Observatory ISO International Standards Organization ISPM International Solar Polar Mission ISRO Indian Space Research Organisation ISTS Institute for Space and Terrestrial Science ISU International Space University ISY International Space Year ISZ Iskusstvenniy Sputnik Zemli IUE International Ultraviolet Explorer IUS Inertial Upper Stage J JAEL JSC Avionics Engineering Laboratory JCMT James Clerk Maxwell Telescope JD Julian Date; Julian Day (Number) JEM Japanese Experiment Module JERS Japanese Earth Resources Satellite JGR Journal of Geophysical Research JILA Joint Institute for Laboratory Astrophysics JPL Jet Propulsion Laboratory JSC Johnson Space Center K KAO Kuiper Airborne Observatory KB Construction Bureau KPM Kometen, Planetoiden, Meteore KPNO Kitt Peak National Observatory KSC Kennedy Space Center KTB Cretaceous-Tertiary Boundary L LAGEOS Laser Geodynamics Satellite LASCO Large Angle Spectrometric Coronograph LANL Los Alamos National Laboratory LaRC Langley Research Center LC Launch Complex LDEF Long Duration Exposure Facility LEDA On-line Earthnet Data Access LEM Lunar Excursion Module LEO Low Earth Orbit LeRC Lewis Research Center LEST Large Earth-based Solar Telescope LFC Large Format Camera LGA Low Gain Antenna LGM Little Green Men LH Liquid Hydrogen LHA Local Hour Angle LIS Lightning Imaging Sensor LLNL Lawrence-Livermore National Laboratory LM Lunar Module LMC Large Magellanic Cloud LN2 Liquid Nitrogen LOX Liquid OXygen LPO La Palma Observatory LPV Long Period Variable LRB Liquid Rocket Booster LRSI Low-temperature Reusable Surface Insulation LSR Local Standard of Rest LST Local Sidereal Time LTP Lunar Transient Phenomenon LY Light Year (usu. ly) M M Messier MACHO MAssive Compact Halo Object MACRO Monopoles, Astrophysics, and Cosmic Ray Observatory MACS Modular Attitude Control System MARS Series of Soviet Mars spacecraft MAS Millimeter-wave Atmospheric Sounder MB Manned Base MBB Messerschmitt-Belkow-Blohm MCC Mission Control Center MCCC Maragone Convection on Closed Containers MDSSC McDonnell Douglas Space Systems Corp MECO Main Engine CutOff; Magnetospheric Eternally Collapsing Object MET Mission Elapsed Time MEV Mars Excursion Vehicle MFPE Misson From Planet Earth MFV Main Fuel Valve MIMR Multifrequency Imaging Microwave Radiometer MITI Ministry of International Trade and Industry MISR Multiangle Imaging Spectro-Radiometer MJD Modified Julian Date ML Mobile Launcher MLI Multi-Layer Insulation MLP Mobile Launch Platform MLS Microwave Limb Sounder MMCC Mission Management and Control Centre MMH MonoMethyl Hydrazine MMPO Mission Management and Planning Office MMS Multi-mission Modular Spacecraft MMT Multiple Mirror Telescope MMU Manned Maneuvering Unit MNRAS Monthly Notices of the Royal Astronomical Society MOC Mars Observer Camera MODE Middeck Zero-Gravity Dynamics Experiment MODIS Moderate Resolution Imaging Spectrometer MODIS-N MODIS-Nadir MODIS-T MODIS-Tilt MOL Manned Orbiting Laboratory MOLA Mars Observer Laser Altimeter MOMS Modular Optoelectronic Multispectral/Stereo Scanner MOMV Manned Orbital Maneuvering Vehicle MOPITT Measurements of Pollution in the Troposphere MOTV Manned Orbital Transfer Vehicle MPC Minor Planets Circular MPEC Multi-Purpose Experiment Canister MPESS Multiple Purpose Experiment Support Structure MRIR Medium Resolution Infrared Radiometer MRO Memory Read-Out MRSR Mars Rover and Sample Return MRSRM Mars Rover and Sample Return Mission MS Main Sequence MSFC Marshall Space Flight Center MSOCC Multisatellite Operations Control Center MSS Multispectral Scanner MSU Microwave Sounding Unit MTC Man Tended Capability MTFF Columbus Man-Tended Free-Flyer MTPE Mission To Planet Earth MVI Microgravity Vestibular Investigation N NACA National Advisory Committee on Aeronautics NAS Numerical Aerodynamic Simulation NASA National Aeronautics and Space Administration NASDA NAtional Space Development Agency NASM National Air and Space Museum NASP National AeroSpace Plane NBS National Bureau of Standards NDV NASP Derived Vehicle NESDIS National Environmental Satellite Data and Information Service. NERVA Nuclear Engine for Rocket Vehicle Application NGC New General Catalog NGT NASA Ground Terminal NICMOS Near Infrared Camera/Multi Object Spectrometer NIMS Near Infrared Mapping Spectrometer NIR Near InfraRed NIST National Institute for Standards and Technology NLDP National Launch Development Program NOAA National Oceanic and Atmospheric Administration NOAO National Optical Astronomy Observatories NOCC Network Operations Control Center NORAD NORth American aerospace Defense NPO Scientific Production Organization NPOE NPO Energiya NPO-PM NPO Prikladnoi Mekhaniki NRAO National Radio Astronomy Observatory NRL Naval Research Laboratory NRSC National Remote Sensing Centre NRO National Reconnaissance Office NRSC National Remote Sensing Centre NS Neutron Star NSA National Security Agency NSF National Science Foundation NSI NASA Science Internet / NASA Standard Initiator / National Environmental Satellite Data and Information Service NSO National Solar Observatory NSSDC National Space Science Data Center NTR Nuclear Thermal Rocket(ry) NTT New Technology Telescope O OAO Orbiting Astronomical Observatory OARE Orbital Acceleration Research Experiment OCGF Organic Crystal Growth Facility OCST Office of Commercial Space Transportation OCTS Ocean Color and Temperature Scanner OCTW Optical Communications Through the shuttle Window OGO Orbiting Geosurvey Observatories OMB Office of Management and Budget OMDP Orbiter Maintenance Down Period OMS Orbital Maneuvering System OPF Orbiter Processing Facility ORBI Stock ticker symbol for OSC ORFEUS Orbiting and Retrievable Far and Extreme Ultraviolet Spectrometer OSC Orbital Sciences Corporation OSCAR Orbiting Satellite Carrying Amateur Radio OSS Office of the Space Station OSSA Office of Space Science and Applications OSSE Oriented Scintillation Spectrometer Experiment OSTP Office of Science and Technology Policy OTA Optical Telescope Assembly OTFE Oscillatory Thermocapillary Flow Experiment OTHB Over The Horizon Backscatter OTV Orbital Transfer Vehicle OV Orbital Vehicle P PAM Payload Assist Module PAM-D Payload Assist Module, Delta-class PARE Physiological and Anatomical Rodent Experiment PASS Primary Avionics Software System PC ParseC (usu. pc) PCG Protein Crystal Growth experiment PCGG PCG Glovebox PCT Photometric Calibration Test PDE Particle Dispersion Experiment PDRS Payload Deployment and Retrieval System PDS Planetary Data System PEM Payload Electronics Module PEM Particle Environment Monitor PHA Physics and Astronomy PI Principal Investigator PLB Payload Bay PLBD Payload Bay Doors PLSS Portable Life Support System PM Pressurized Module PMC Permanently Manned Capability PMIRR Pressure Modulated InfraRed Radiometer PMS Pre-Main Sequence PMT PhotoMultiplier Tube PN Planetary Nebula POCC Payload/Platform Operations Control Center POEM Polar Orbiting Earth Mission POP PO Polyot PPF Columbus Polar Platform PPM Positions and Proper Motions (catalog) PRTLS Powered RTLS PSF Point Spread Function PSR PulSaR PTC Passive Thermal Control PV Photovoltaic PVO Pioneer Venus Orbiter / Protivo-Vosdushniya Oborona Q QSO Quasi-Stellar Object R RA Right Ascension RAE Royal Aerospace Establishment RAL Rutherford-Appleton Laboratory RAS Royal Astronomical Society RASC Royal Astronomical Society of Canada RCC Reinforced Carbon-Carbon RCI Rodent Cage Interface RCS Reaction Control System / Revision Control System RCT Radiometric Calibration Target REM Rat Enclosure Module RESTEC Remote Sensing Technology Center RF Radio Frequency RFI Radio Frequency Interference RFM Reconfigurable Furnace Module RFNA Red Fuming Nitric Acid RG Red Giant RGB Red Giant Branch RHC Rotational Hand Controller RIACS Research Institute for Advanced Computer Science RKA Rossiskoye Kosmicheskoye Agentsvo RMCD Radaiation Monitoring Container Device RME Radiation Monitoring Experiment RMS Remote Manipulator System RNGC Revised New General Catalog ROSAT ROentgen Satellite ROUS Rodents Of Unusual Size RPM Retro Propulsion Module RSN Radio SuperNova RTG Radioisotope Thermoelectric Generator RTLS Return To Launch Site RVSN Raketniye Voiska Stratigcheskovo Naznacheniya S S Spiral (for galaxies) SAA South Atlantic Anomaly / Single Access Antenna SAGA Solar Array Gain Augmentation SAIL Shuttle Avionics Integration Laboratory SAM Shuttle Activation Monitor SAMPEX Solar Anomalous and Magnetospheric Particle EXplorer SAMS Space Acceleration Measurement System SAO Smithsonian Astrophysical Observatory SAR Search And Rescue / Synthetic Aperture Radar SARA Satellite pour Astronomie Radio Amateur SAREX Search and Rescue Exercise / Shuttle Amateur Radio Experiment SAS Space Activity Suit / Space Adaptation Syndrome SAT Synthetic Aperture Telescope SB Spiral, Barred (for galaxies) SBIR Small Business Innovation Research S/C SpaceCraft SCA Shuttle Carrier Aircraft SCT Schmidt-Cassegrain Telescope SDI Strategic Defense Initiative SDIO Strategic Defense Initiative Organization SDSS Sloan Digital Sky Survey SECO Sustainer Engine Cutoff SEDS Students for the Exploration and Development of Space SEI Space Exploration Initiative SEM Space Environment Monitor SEP Societe Europeenne de Propulsion SEPAC Space Experiments with Particle Accelerators SEST Swedish ESO Submillimeter Telescope SETI Search for ExtraTerrestrial Intelligence SHARE Space Station Heat Pipe Advanced Radiator Element SID Sudden Ionospheric Disturbance SIR Shuttle Imaging Radar SIRTF Space InfraRed Telescope Facility SIXA Silicon X-ray Array SL (Comet) Shoemaker-Levy / SpaceLab SL-J SpaceLab Japan SLAP Space Link Access Protocol SLAR Side-Looking Airborne Radar SLC Space Launch Complex SLF Shuttle Landing Facility SLS Space(lab) Life Sciences SMC Small Magellanic Cloud SME Solar Mesosphere Explorer SMEX Small EXplorers SMM Solar Maximum Mission SMS Shuttle Mission Simulator SN SuperNova SNG Sodruzhestva Nezabisimikh Gosudarst SNR Signal to Noise Ratio / SuperNova Remnant SNU Solar Neutrino Units SOB Strap-On Booster SOCC Satellite Operations Control Center SOFI Spray-on Foam Insulation SOFIA Stratospheric Observatory For Infrared Astronomy SOHO SOlar Heliospheric Observatory SOLSTICE Solar Stellar Irradiance Comparison Experiment SPAN Space Physics and Analysis Network SPARTAN Shuttle Pointed Autonomous Research Tool for Astronomy SPAS Space Pallet Satellite SPDM Special Purpose Dextrous Manipulator SPH Smoothed-Particle Hydrodynamics SPOT Systeme Probatoire pour l'Observation de la Terre SPS Solar Power Satellite SPTN SPARTAN SR Special Relativity SRB Solid Rocket Booster SRM Solid Rocket Motor SSBUV Shuttle Solar Backscatter Ultraviolet experiment SSCE Solid Surface Combustion Experiment SSF Space Station Freedom SSI Solid-State Imager / Space Studies Institut SSME Space Shuttle Main Engine SSO Spurious Shut-off SSPF Space Station Processing Facility SSPO Space Shuttle Program Office SSPS Sky Survey Prototype System SSRMS Space Station Remote Manipulator System SSRT Single Stage Rocket Technology SSRV Solar-Sail Race Vehicle SST Spectroscopic Survey Telescope / SuperSonic Transport SSTO Single Stage To Orbit STARCAL Star Calibration STC Stennis Test Center STC SHAPE Technical Center STDCE Surface Tension Driven Convection Experment STIKSCAT Stick Scatterometer STIS Space Telescope Imaging Spectrometer STS Shuttle Transport System / Space Transportation System STScI Space Telescope Science Institute STSDAS Space Telescope Science Data Analysis System SUSIM Solar Ultraviolet Spectral Irradiance Monitor SWAN Solar Wind Anisotropy Experiment SWAS Submillimeter Wave Astronomy Satellite SWF ShortWave Fading SWLC Salt Water Leak Check T TAI International Atomic Time TAL Transatlantic Abort Landing TAU Thousand Astronomical Unit TCM Trajectory Control Maneuver TCS Thermal Control System TDRS Tracking and Data Relay Satellite TDRSS Tracking and Data Relay Satellite System TDT Terrestrial Dynamic Time TEA Torque Equilibrium Attitude TES Thermal Emission Spectrometer THIR Temperature/Humidity Infrared Radiometer TIG Time of (until) Ignition TIROS Television InfraRed Observation Satellite TKSC Tsukuba Space Center TM Thematic Mapper TOMS Total Ozone Mapping Spectrometer TOPEX Ocean Topography Experiment TOPS Toward Other Planetary Systems TOS Transfer Orbit Stage TPCE Tank Pressure Control Experiment TPS Thermal Protection System TRMM Tropical Rainfall Measuring Mission TSM Tail Service Mast TSPK Tsentr Podgotovka Kosmonavti TSS Targeted Search System / Tethered Satellite System TSTO Two Stage To Orbit TSUP Tsentr Upravileniya Polyoti TTC Telemetry, Telecommand, and Control TWTA Travelling Wave Tube Amplifier U U3P Union pour la Promotion de la Propulsion Photonique UARS Upper Atmosphere Research Satellite UBM Unpressurized Berthing Mechanism UDMH Unsymmetrical DiMethyl Hydrazine UFO Unidentified Flying Object UGC Uppsala General Catalog UHF Ultra High Frequency UIT Ultraviolet Imaging Telescope UKST United Kingdom Schmidt Telescope UOSAT University of Surrey Satellite UPPP Union pour la Promotion de la Propulsion Photonique USA/RC Universities Space Automation/Robotics Consortium USAF United States Air Force USMC United States Marine Corps USML United States Microgravity Laboratory USN United States Navy USMP United States Microgravity Payload USO Ultra-Stable Oscillator UT Universal Time UTC Coordinated Universal Time UV Ultraviolet UVPI Ultraviolet Plume Instrument UVS Ultraviolet Spectrometer V VAB Vehicle Assembly Building VAFB Vandenberg Air Force Base VAS VISSR Atmospheric Sounder VECO Vernier Engine Cutoff VEEGA Venus-Earth-Earth Gravity Assist VFT Visual Function Tester VHF Very High Frequency VIB Vertical Integration Building VICAR Graphics format used by JPL VISSR Visible/Infrared Spin-Scan Radiometer VLA Very Large Array VLBA Very Long Baseline Array VLBI Very Long Baseline Interferometry VLF Very Low Frequency VLT Very Large Telescope VMF Voenno-Morskoy Flot VMS Vertical Motion Simulator VOIR Venus Orbiting Imaging Radar VPF Vertical Processing Facility VRM Venus Radar Mapper VS SNG Vooruzhennikh Sil SNG VTHL Vertical Takeoff Horizontal Landing VTVL Vertical Takeoff Vertical Landing VVS Voenno-Vosdushniye Sili W WD White Dwarf WFF Wallops Flight Facility WFPC Wide Field/Planetary Camera WFPCII Replacement for WFPC WIMP Weakly Interacting Massive Particle WINDII Wind Imaging Interferometer WIYN Wisconsin/Indiana/Yale/NOAO telescope WMO World Meterological Organisation WR Western Range WSGT White Sands Ground Terminal WSMR White Sands Missile Range WTR Western Test Range WUPPE Wisconsin Ultraviolet PhotoPolarimter Experiment X XMM X-ray Multi Mirror XUV Extreme Ultraviolet Y YSC Yokohama Science Center YSO Young Stellar Object Z ZCG Zeolite Crystal Growth ZHR Zenith Hourly Rate
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