Related by context. Frequent words. (Click for all words.) 56 constellation Taurus 55 extrasolar 54 Jupiter Saturn Uranus 54 constellation Lyra 54 Jupiter Saturn 53 gaseous planets 53 constellation Virgo 53 Kepler #b 53 Cancri 52 red supergiant 52 Epsilon Eridani 52 Exoplanet 52 moon Charon 52 COROT 52 Herschel Space 52 Beta Pictoris 52 nebulae 52 gravitationally bound 52 Albireo 51 icy moons 51 Callisto 51 Kuiper Belt objects 51 WASP #b 51 polar orbits 51 millisecond pulsars 51 Small Magellanic Cloud 51 planet Uranus 51 GALEX 51 astronomical telescope 51 coronagraph 51 Jupiter moon Io 51 super Earths 51 Sedna 51 nicknamed Xena 50 transiting planet 50 Haumea 50 Toutatis 50 noctilucent clouds 50 transiting planets 50 planets orbiting stars 50 ESA XMM Newton 50 Jupiter moons 50 infrared telescopes 49 By BRIAN MCTAGGART 49 4 chars 49 heavily cratered 49 NASA Spacecraft 49 Galaxy Evolution 49 Earthlike planets 49 tidally locked 49 Canis Major 49 orbiting Saturn 49 interplanetary spacecraft 49 CoRoT 7b 49 Earthlike 49 Lunokhod 49 HD #b [002] 49 NASA Cassini 48 constellation Leo 48 Gamma ray bursts 48 Astrophysics Laboratory 48 star Gliese 48 Galileo spacecraft 48 photosphere 48 AGNs 48 extrasolar planet 48 Phaethon 48 supermassive 48 OGLE 48 Compton Gamma Ray 48 protoplanetary disks 48 HAT P 48 Kuiper belt 48 earthshine 48 Ganymede 48 XMM Newton 48 EPOXI 48 NASA Kepler 48 Neutron stars 48 asteroid Ceres 48 By MARK CARREAU 47 moon Europa 47 Eagle Nebula 47 gravitational lens 47 spacecraft orbiting 47 extrasolar planets 47 astronomical objects 47 radial velocity 47 ecliptic 47 potentially habitable 47 Viking landers 47 outer planets 47 Wilkinson Microwave Anisotropy Probe 47 NASA rovers 47 Tycho Brahe 47 constellation Orion 47 unaided eye 47 constellation Sagittarius 47 Boozy nightKaty Perry 47 planets astronomers 47 Deltastock Inc.