thumb|A [[GALEX image of the spiral galaxy Messier 81 in ultraviolet light. Credit:GALEX/NASA/JPL-Caltech.]]
Ultraviolet astronomy is the observation of electromagnetic radiation at ultraviolet wavelengths between approximately 10 and 320 nanometres; shorter wavelengths—higher energy photons—are studied by X-ray astronomy and gamma-ray astronomy. Ultraviolet light is not visible to the human eye. Most of the light at these wavelengths is absorbed by the Earth's atmosphere, so observations at these wavelengths must be performed from the upper atmosphere or from space.
- - EUVE (7-76 nm, 1992–2001)
- - FUSE (90.5-119.5 nm, 1999–2007)
- + - Extreme ultraviolet Imaging Telescope (on SOHO imaging Sun at 17.1, 19.5, 28.4, and 30.4 nm)
- + - Hubble Space Telescope (various 115-800 nm,1990-1997-) (STIS 115–1030 nm, 1997–) (WFC3 200-1700 nm, 2009–)
- - Swift Gamma-Ray Burst Mission (170–650 nm, 2004- )
- - Hopkins Ultraviolet Telescope (flew in 1990 and 1995)
- - ROSAT XUV (17-210eV) (30-6 nm, 1990–1999)
- - Far Ultraviolet Spectroscopic Explorer (90.5-119.5 nm, 1999–2007)
- - Galaxy Evolution Explorer (135–280 nm, 2003–2012)
- - Hisaki (130-530 nm, 2013 - 2023)
- - Lunar-based ultraviolet telescope (LUT) (on Chang'e 3 lunar lander, 245-340 nm, 2013 -)
- - Astrosat (130-530 nm, 2015 -)
- - Colorado Ultraviolet Transit Experiment - (255-330 nm spectrograph, 2021- )
- - PROBA-3 (CUTE) - (530-588 nm coronagraph, 2024- )
- - Public Telescope (PST) (100-180 nm, Proposed 2015, EU funded study )
- - Viewpoint-1 SpaceFab.US (200-950 nm, Launch planned 2022)
- - Carruthers Geocorona Observatory
See also List of ultraviolet space telescopes
Ultraviolet instruments on planetary spacecraft
- - UVIS (Cassini) - 1997 of (at Saturn from 2004 to 2017)
- - MASCS (MESSENGER) - 2004 (at Mercury from 2011 to 2015)
- - Alice (New Horizons) - 2006 (Pluto flyby in 2015)
- - UVS (Juno) - 2011 (at Jupiter since 2016)
- - IUVS (MAVEN) - 2013 (at Mars since 2014)