Related by context. Frequent words. (Click for all words.) 66 extrasolar 64 HD #b [002] 64 WASP #b 63 gaseous planets 63 Kepler #b 62 icy moons 62 innermost planet 62 Earthlike planets 62 interplanetary spacecraft 61 Gliese #g 61 planet orbits 60 nicknamed Xena 60 extrasolar planet 60 Oort Cloud 60 Oort cloud 60 star Gliese 60 meteoroid 60 planetoid 59 constellation Lyra 59 micrometeoroids 59 Cancri 59 Earthlike 59 photosphere 59 Toutatis 59 JPL manages 59 Martian dust 59 HAT P 59 CoRoT 7b 58 planet orbiting 58 red supergiant 58 stellar nurseries 58 habitable zones 58 heavily cratered 58 meteoroids 58 By DON CUDDY 58 TrES 58 moon Enceladus 57 hot Jupiters 57 Goldilocks zone 57 Astronauts inspect 57 gravitationally bound 57 habitable planets 57 twin rover Spirit 57 rocky planets 57 Kepler spacecraft 57 orbiting 57 exosphere 57 By Sarah Trotto 57 Jupiter Saturn Uranus 57 Cabeus crater 57 Mauna Kea Hawaii 57 constellation Virgo 57 elliptical galaxy 57 protoplanetary disk 56 mesosphere 56 Olympus Mons 56 Earth magnetosphere 56 By ALLEN GEMAEHLICH 56 potentially habitable 56 spacecraft orbiting 56 planets circling 56 planets orbiting 56 planet Uranus 56 asteroid 56 By Laurie Kulikowski 56 Cosmic rays 56 distant galaxy 56 Eagle Nebula 56 By HARVEY SIMPSON 56 Saturn moon 56 laser altimeter 56 radial velocity 56 planet 56 Fomalhaut 56 Valles Marineris 56 Andromeda galaxy 56 Gusev crater 56 Kuiper Belt objects 56 Solar flares 56 Galileo spacecraft 56 SIRTF 55 polar craters 55 By Candia Dames 55 Exoplanet 55 coronal mass ejection 55 Kuiper belt 55 planets 55 moon Charon 55 lunar soil 55 elongated orbit 55 Haumea 55 By MIKE McKIBBIN 55 ionized gas 55 Martian equator 55 Jupiter Saturn 55 magnetar 55 polar vortex 55 Wilkinson Microwave Anisotropy Probe 55 exoplanets 55 protoplanetary disks 55 Saturn moons