WList of space telescopes
WApollo Telescope Mount
WAstron (spacecraft)
WAstronomical Netherlands Satellite
WAstrosat
WCosmic Origins Spectrograph
WFar Ultraviolet Spectroscopic Explorer
WGALEX
WHopkins Ultraviolet Telescope
WHubble Space Telescope
WInterface Region Imaging Spectrograph
WInternational Ultraviolet Explorer
WLarge Ultraviolet Optical Infrared Surveyor
WMSSTA
WNeil Gehrels Swift Observatory
WOrbiting Astronomical Observatory
WSOLAR (ISS)
WSpektr-UV
WSTS-67
WTD-1A
WTRACE
WUVS (Juno)