Related by context. Frequent words. (Click for all words.) 65 Gliese #g 64 habitable planet 62 extrasolar planet 59 rocky planets 59 planet orbiting 59 HD #b [002] 58 habitable planets 58 super Earths 57 Eta Carinae 56 exoplanets 55 hot Jupiters 55 exoplanet 55 habitable zone 55 celestial object 54 planets 54 gamma ray burst 54 terrestrial planets 54 unaided eye 54 magnetar 54 brown dwarf 53 brown dwarfs 53 PALCA 53 created Benzinga Pro 53 extrasolar planets 53 planet orbits 53 distant galaxy 53 planets orbiting 53 quark gluon plasma 53 Milky Way Galaxy 53 outer planets 53 Betelgeuse 52 Andromeda Galaxy 52 asteroid 52 Milky Way galaxy 52 subatomic particle 52 Sedna 51 comet 51 Saturn moons 51 Gliese 51 Kuiper belt 51 meteoroid 51 supermoon 51 Crab Nebula 51 planet 51 Enceladus 51 perigee 51 constellation Perseus 51 supernova explosion 51 COROT 50 polar caps 50 FLATOW 50 neutrino 50 accretion disk 50 moon Europa 50 heliosphere 50 buckyball 50 pulsar 50 GRBs 49 geologically active 49 globular cluster 49 UB# [003] 49 Orion Nebula 49 astrobiologists 49 WIMPs 49 cosmic microwave background 49 Saturn rings 49 neutron star 49 moon Charon 49 Andromeda galaxy 49 ionized gas 49 Saturn moon Enceladus 49 infrared wavelengths 49 Saturn moon 49 comets 48 single celled 48 Gravatar enabled weblog 48 Ocean acidification 48 gamma ray bursts 48 astronomers 48 volcanically active 48 Uranus 48 substorms 48 olivine 48 spacetime 48 galaxy formation 48 Mimas 48 Earth magnetosphere 48 Antimatter 48 astronomical objects 48 distant galaxies 48 Fomalhaut 48 Iapetus 48 moon Titan 48 supernova 47 galaxy cluster 47 Don Yeomans 47 Kuiper Belt 47 Milky Way 47 trillionth 47 supermassive black hole 47 organic molecules