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   MODIS:     Moderate Resolution Imaging Spectroradiometer   
   MOL:       Manned Orbiting Laboratory   
   MOLA:      Mars Observer Laser Altimeter (on Mars Observer)   
   MOMV:      Manned Orbital Maneuvering Vehicle   
   MOTV:      Manned Orbital Transfer Vehicle   
   MPC:       Minor Planets Circular   
   MPEC:      Minor Planets Electronic Circular   
   MPL:       Mars Polar Lander   
   MRSR:      Mars Rover and Sample Return   
   MRSRM:     Mars Rover and Sample Return Mission   
   MSFC:      (George C.) Marshall Space Flight Center (NASA)   
   MTC:       Man Tended Capability   
   NACA:      National Advisory Committee on Aeronautics (became NASA)   
   NASA:      National Aeronautics and Space Administration   
   NASDA:     NAtional Space Development Agency (Japan)   
   NASM:      National Air and Space Museum   
   NASP:      National AeroSpace Plane   
   NBS:       National Bureau of Standards (now NIST)   
   NDV:       NASP Derived Vehicle   
   NEAR:      Near Earth Asteroid Rendezvous (now named NEAR Shoemaker)   
   NERVA:     Nuclear Engine for Rocket Vehicle Application   
   NG:        NewsGroup   
   NGC:       New General Catalog   
   NGST:      Next Generation Space Telescope   
   NICMOS:    Near Infrared Camera / Multi Object Spectrometer (HST upgrade)   
   NIMS:      Near-Infrared Mapping Spectrometer (on Galileo)   
   NIR:       Near InfraRed   
   NIST:      National Institute of Standards and Technology (was NBS)   
   NLDP:      National Launch Development Program   
   NOAA:      National Oceanic and Atmospheric Administration   
   NOAO:      National Optical Astronomy Observatories   
   NORAD:     NORth American aerospace Defense   
   NRAO:      National Radio Astronomy Observatory   
   NRO:       National Reconnaissance Office   
   NS:        Neutron Star   
   NSA:       National Security Agency   
   NSF:       National Science Foundation   
   NSO:       National Solar Observatory   
   NSSDC:     National Space Science Data Center   
   NTR:       Nuclear Thermal Rocket(ry)   
   NTT:       New Technology Telescope   
   OAO:       Orbiting Astronomical Observatory   
   OCST:      Office of Commercial Space Transportation   
   OMB:       Office of Management and Budget   
   OMS:       Orbital Maneuvering System   
   OPF:       Orbiter Processing Facility   
   ORFEUS:    Orbiting and Retrievable Far and Extreme Ultraviolet Spectrometer   
   OSC:       Orbital Sciences Corporation   
   OSCAR:     Orbiting Satellite Carrying Amateur Radio   
   OSSA:      Office of Space Science and Applications   
   OSSE:      Oriented Scintillation Spectrometer Experiment (on CGRO)   
   OT:        Off-Topic   
   OTA:       Optical Telescope Assembly (on HST)   
   OTHB:      Over The Horizon Backscatter   
   OTV:       Orbital Transfer Vehicle   
   OV:        Orbital Vehicle   
   PAM:       Payload Assist Module   
   PAM-D:     Payload Assist Module, Delta-class   
   PDS:       Planetary Data System   
   PI:        Principal Investigator   
   PLSS:      Portable Life Support System   
   PM:        Pressurized Module   
   PMC:       Permanently Manned Capability   
   PMIRR:     Pressure Modulated InfraRed Radiometer (on Mars Observer)   
   PMT:       PhotoMultiplier Tube   
   PPM:       Positions and Proper Motions (catalog)   
   PSF:       Point Spread Function   
   PSR:       PulSaR   
   PV:        Photovoltaic   
   PVO:       Pioneer Venus Orbiter   
   QSO:       Quasi-Stellar Object   
   RADAR:     RAdio Detection And Ranging   
   RAS:       Royal Astronomical Society   
   RASC:      Royal Astronomical Society of Canada   
   RCI:       Rodent Cage Interface (for SLS mission)   
   RCS:       Radar Cross Section   
   RCS:       Reaction Control System   
   REM:       Rat Enclosure Module (for SLS mission)   
   RF:        Radio Frequency   
   RFI:       Radio Frequency Interference   
   RFNA:      Red Fuming Nitric Acid   
   RIACS:     Research Institute for Advanced Computer Science   
   RMS:       Remote Manipulator System   
   RNGC:      Revised New General Catalog   
   ROTFL:     Rolling On The Floor Laughing   
   ROSAT:     ROentgen SATellite   
   ROUS:      Rodents Of Unusual Size (I don't believe they exist)   
   RSA:       Russian Space Agency   
   RSN:       Radio SuperNova   
   RSN:       Real Soon Now   
   RTG:       Radioisotope Thermoelectric Generator   
   RTLS:      Return To Launch Site (Shuttle abort plan)   
   SAA:       South Atlantic Anomaly   
   SAGA:      Solar Array Gain Augmentation (for HST)   
   SAMPEX:    Solar Anomalous and Magnetospheric Particle EXplorer   
   SAO:       Smithsonian Astrophysical Observatory   
   SAR:       Search And Rescue   
   SAR:       Synthetic Aperture Radar   
   SARA:      Satellite pour Astronomie Radio Amateur   
   SAREX:     Search and Rescue Exercise   
   SAREX:     Space Amateur Radio Experiment   
   SAS:       Space Activity Suit   
   SAS:       Space Adaptation Syndrome   
   SAT:       Synthetic Aperture Telescope   
   S/C:       SpaceCraft   
   SCA:       Shuttle Carrier Aircraft   
   SCT:       Schmidt-Cassegrain Telescope   
   SDI:       Strategic Defense Initiative   
   SDIO:      Strategic Defense Initiative Organization (now BMDO)   
   SEDS:      Students for the Exploration and Development of Space   
   SEI:       Space Exploration Initiative   
   SEST:      Swedish ESO Submillimeter Telescope   
   SETI:      Search for ExtraTerrestrial Intelligence   
   SID:       Sudden Ionospheric Disturbance   
   SIR:       Shuttle Imaging Radar   
   SIRTF:     Space (formerly Shuttle) InfraRed Telescope Facility   
   SL:        (Comet) Shoemaker-Levy   
   SL:        SpaceLab   
   SLAR:      Side-Looking Airborne Radar   
   SLC:       Space Launch Complex   
   SLS:       Space(lab) Life Sciences   
   SMC:       Small Magellanic Cloud   
   SME:       Solar Mesosphere Explorer   
   SMEX:      SMall EXplorers   
   SMM:       Solar Maximum Mission   
   SN:        SuperNova (e.g., SN1987A)   
   SNR:       Signal to Noise Ratio   
   SNR:       SuperNova Remnant   
   SNU:       Solar Neutrino Units   
   SOFIA:     Stratospheric Observatory For Infrared Astronomy   
   SOHO:      SOlar Heliospheric Observatory   
   SPAN:      Space Physics and Analysis Network   
   SPDM:      Special Purpose Dextrous Manipulator   
   SPOT:      Satellite Pour l'Observation de la Terre   
   SPS:       Solar Power Satellite   
   SR:        Special Relativity   
   SRB:       Solid Rocket Booster   
   SRM:       Solid Rocket Motor   
   SSF:       Space Station Fred (er, Freedom) (Superseded by ISS)   
   SSI:       Solid-State Imager (on Galileo)   
   SSI:       Space Studies Institut   
   SSME:      Space Shuttle Main Engine   
   SSPF:      Space Station Processing Facility   
   SSPS:      Sky Survey Prototype System   
   SSRMS:     Space Station Remote Manipulator System   
   SSRT:      Single Stage Rocket Technology   
   SST:       Spectroscopic Survey Telescope   
   SST:       SuperSonic Transport   
   SSTO:      Single Stage To Orbit   
   STIS:      Space Telescope Imaging Spectrometer (to replace FOC and GHRS)   
   STS:       Shuttle Transport System (or) Space Transportation System   
   STScI:     Space Telescope Science Institute   
   STSDAS:    Space Telescope Science Data Analysis System   
   SWAS:      Submillimeter Wave Astronomy Satellite   
   SWF:       ShortWave Fading   
   TAL:       Transatlantic Abort Landing (Shuttle abort plan)   
   TANSTAAFL: There Ain't No Such Thing As A Free Lunch   
   TAU:       Thousand Astronomical Unit (mission)   
   TCS:       Thermal Control System   
   TDRS:      Tracking and Data Relay Satellite   
   TDRSS:     Tracking and Data Relay Satellite System   
   TEA:       Torque Equilibrium Attitude   
   TES:       Thermal Emission Spectrometer (on Mars Observer)   
   THEMIS:    THermal EMission Imaging System (on Mars 2001 Odyssey)   
   TIROS:     Television InfraRed Observation Satellite   
   TLA:       Three Letter Acronym   
   TOMS:      Total Ozone Mapping Spectrometer   
   TOPS:      Toward Other Planetary Systems   
   TPS:       Thermal Protection System   
   TSS:       Targeted Search System   
   TSS:       Tethered Satellite System   
   TSTO:      Two Stage To Orbit (also 2STO)   
   UARS:      Upper Atmosphere Research Satellite   
      
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   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)