Question: What are the existing (in service or terminated) space telescopes ?
Answers:
answer_text: Granat
answer_text: Gamma
answer_text: Compton Gamma Ray Observatory (CGRO)
answer_text: International Gamma Ray Astrophysics Laboratory (INTEGRAL)
answer_text: Fermi Gamma-ray Space Telescope
answer_text: Astronomical Netherlands Satellite (ANS)
answer_text: Einstein Observatory (HEAO 2)
answer_text: Astron
answer_text: EXOSAT
answer_text: ROSAT
answer_text: Broad Band X-ray Telescope / Astro 1
answer_text: Advanced Satellite for Cosmology and Astrophysics (ASCA, Astro-D)
answer_text: Array of Low Energy X-ray Imaging Sensors (Alexis)
answer_text: BeppoSAX
answer_text: Chandra X-ray Observatory
answer_text: XMM-Newton
answer_text: Astrosat
answer_text: Hitomi (Astro-H)
answer_text: Mikhailo Lomonosov
answer_text: Spektr-RG
answer_text: OAO-2 (Stargazer)
answer_text: [[Orbiting Astronomical Observatory|OAO-3 Copernicus]]
answer_text: International Ultraviolet Explorer (IUE)
answer_text: Hubble Space Telescope
answer_text: Extreme Ultraviolet Explorer (EUVE)
answer_text: Far Ultraviolet Spectroscopic Explorer (FUSE)
answer_text: Interface Region Imaging Spectrograph (IRIS)
answer_text: Venus Spectral Rocket Experiment
answer_text: Hipparcos
answer_text: Near Earth Object Surveillance Satellite (NEOSSat)
answer_text: Gaia (astrometry)
answer_text: Transiting Exoplanet Survey Satellite (TESS)
answer_text: CHEOPS
answer_text: IRAS
answer_text: Infrared Space Observatory (ISO)
answer_text: Midcourse Space Experiment (MSX)
answer_text: Submillimeter Wave Astronomy Satellite (SWAS)
answer_text: Wide Field Infrared Explorer (WIRE)
answer_text: Spitzer Space Telescope
answer_text: Akari (Astro-F)
answer_text: Herschel Space Observatory
answer_text: Wide-field Infrared Survey Explorer (WISE)
answer_text: Odin
answer_text: Planck
answer_text: Dark Matter Particle Explorer (DAMPE)
answer_text: James Webb Space Telescope (JWST)
answer_text: X-ray Polarimeter Satellite (XPoSat)
answer_text: X-Ray Imaging and Spectroscopy Mission (XRISM)
answer_text: International Lunar Observatory Precursor (ILO-X)
answer_text: Euclid
answer_text: SPHEREx
answer_text: Nancy Grace Roman Space Telescope (Wide Field Infrared Survey Telescope; WFIRST)
answer_text: AstroSat-2
answer_text: PLATO
answer_text: ARIEL
answer_text: Advanced Telescope for High Energy Astrophysics (ATHENA)
answer_text: Laser Interferometer Space Antenna (LISA)