astronomy
951 abbreviations
| Abbreviation | Meaning | |
|---|---|---|
| TOPS | (meeting) Toward Other Planetary Systems, a series of educational astronomy workshops | |
| TPF | (telescope) Terrestrial Planet Finder, a planned space telescope that will be used to find extrasolar Earth-like planets | |
| TR | (catalog) TRansit, used to designate a potential observation of a microlensing event caused by a transiting star | |
| TRACE | Transition Region and Coronal Explorer, a solar space telescope | |
| TrES | (telescope) Transatlantic Exoplanet Survey | |
| TT | (astrophysics terminology) Terrestrial Time | |
| TTS | (celestial object) T-Tauri Star | |
| TWA | (celestial object) TW Hydrae Association | |
| TYC | (catalog) Tycho, a catalog that was the predecessor of the Hipparcos (HIP) Catalogue | |
| TZO | (celestial object) Thorne-Żytkow Object, the object that forms when a neutron star merges with a red giant | |
| UARS | (spacecraft) Upper Atmosphere Research Satellite, a satellite used to study the Earth's upper atmosphere | |
| UCAC | (catalog) USNO CCD Astrometric Catalog | |
| UESAC | (observing program) Uppsala-ESO Survey of Asteroids and Comets | |
| UFO | (astrophysics terminology) Unidentified Flying Object | |
| UG | (celestial object) U Geminorum, a class of cataclysmic variable stars (also known as dwarf novae) that are named after U Geminorum, the archetype for the class | |
| UGC | (catalog) Uppsala General Catalogue, a catalog of galaxies | |
| UGSS | (celestial object) UG SS Cygni, a subclass of UG-type stars named after SS Cygni, the archetype for the subclass | |
| UGSU | (celestial object) UG SU Ursae Majoris, a subclass of UG-type stars named after SU Ursae Majoris, the archetype for the subclass | |
| UGWZ | (celestial object) UG WZ Sagittae, a subclass of UG-type stars named after WZ Sagittae, the archetype for the subclass | |
| UGZ | (celestial object) UG Z Camelopardalis, a subclass of UG-type stars named after Z Camelopardalis, the archetype for the subclass | |
| UIT | (telescope) Ultraviolet Imaging Telescope, an ultraviolet telescope that was operated from the cargo bay of the Space Shuttle | |
| UKIDSS | (observing program/catalog) UKIRT Infrared Deep Sky Survey | |
| UKIRT | (telescope) United Kingdom Infrared Telescope | |
| UKSA | (organization) UK Space Agency | |
| UKST | (telescope) United Kingdom Schmidt Telescope | |
| ULIRG | (celestial object) UltraLuminous InfraRed Galaxy, a galaxy that is brighter than 1012 solar luminosities in the infrared | |
| ULX | (celestial object) UltraLuminous X-ray source | |
| UMS | (celestial object) Upper Main Sequence, the more massive hydrogen-burning main-sequence stars | |
| USAF | (organization) United States Air Force | |
| USGS | (organization) United States Geological Survey | |
| USNO | (organization) United States Naval Observatory | |
| UT | (astrophysics terminology) Universal Time | |
| UTC | (astrophysics terminology) Coordinated Universal Time | |
| UV | (astrophysics terminology) UltraViolet | |
| UVS | (instrumentation) UltraViolet Spectrometer, the name of instruments on the Voyager and Galileo spacecraft | |
| UXOR | (celestial object) UX ORionis objects, a class of variable pre-main sequence stars named after UX Orionis, the archetype for the class | |
| VBO | (organization) Vainu Bappu Observatory, located in India | |
| VBT | (telescope) Vainu Bappu Telescope, located at Vainu Bappu Observatory | |
| VCC | (catalog) Virgo Cluster Catalog, a catalog of galaxies in the Virgo Cluster | |
| VdS | (organization) Vereinigung der Sternfreunde, the German amateur astronomers society | |
| VEEGA | (astrophysics terminology) Venus-Earth-Earth Gravity Assist, the path taken by the Galileo spacecraft to reach Jupiter | |
| VeLLO | (celestial object) Very Low Luminosity Object | |
| VERA | (telescope) VLBI Exploration of Radio Astrometry, a Japanese radio telescope designed for studying objects in the Milky Way | |
| VERITAS | (telescope) Very Energetic Radiation Imaging Telescope Array System, gamma-ray telescope in Arizona sensitive to GeV/TeV gamma rays | |
| VHE | (astrophysics terminology) Very High Energy, gamma rays with high energies | |
| VIMOS | (instrumentation) VIsible Multi-Object Spectrograph, instrument on the VLT | |
| VISTA | (telescope) Visible and Infrared Survey Telescope for Astronomy | |
| VLA | (telescope) Very Large Array, a radio telescope in New Mexico operated by the National Radio Astronomy Observatory | |
| VLBA | (telescope) Very Long Baseline Array, a radio telescope operated by the National Radio Astronomy Observatory with antennas spread across the United States | |
| VLBI | (instrumentation) Very Long Baseline Interferometry, combining signals from multiple telescopes/radio antennas that are separated by large distances |