Alphabetical Listing of Astronomy Acronyms
- 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
- 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
- TWTA — Travelling Wave Tube Amplifier
- 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
- USMP — United States Microgravity Payload
- USN — United States Navy
- USO — Ultra-Stable Oscillator
- UT — Universal Time
- UTC — Coordinated Universal Time
- UV — Ultraviolet
- UVPI — Ultraviolet Plume Instrument
- UVS — Ultraviolet Spectrometer
- 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