Related by context. Frequent words. (Click for all words.) 55 NASA Kepler 54 super Earths 53 Michael A'Hearn 52 Steve Squyres 52 extrasolar planet 51 rocky planets 51 Don Yeomans 49 habitable planets 49 exoplanet 49 G. Madhavan Nair 49 hot Jupiters 48 G Madhavan Nair 48 Kepler telescope 48 HD #b [002] 48 Galaxy Evolution 47 extrasolar planets 47 planets orbiting 47 Neil deGrasse Tyson 47 Spitzer Space Telescope 47 COROT 47 exoplanets 46 planetary missions 46 astronomical objects 46 Michael Kostelnik 46 Hubble observations 46 unaided eye 46 habitable planet 46 terrestrial planets 45 planetary nebulae 45 Gliese #g 45 Gamma ray bursts 45 Jupiter moons 45 astrobiologists 45 planets 44 habitable zone 44 substorms 44 planet orbiting 44 Comet McNaught 44 planet orbits 44 galaxy formation 44 interstellar dust 44 GRBs 44 interplanetary spacecraft 44 Anne Schuchat 43 Mark Serreze 43 Cassini Huygens 43 brown dwarfs 43 Chandra X ray 43 planetary scientist 43 distant galaxies 43 comet Wild 43 Geminids 43 planets circling 43 astrophysicist 43 Borucki 42 Cassini imaging 42 EPOXI 42 astronomer 42 Saturn moons 42 moon Charon 42 cosmic microwave background 42 brown dwarf 42 globular clusters 42 Bill Gerstenmaier NASA 42 cosmologists 42 Nehru Planetarium 42 orbiting 42 supernova explosions 42 David Leckrone 42 Madhavan Nair 42 Mike Leinbach 42 Pete Worden 42 astrobiology 42 WIMPs 42 NASA Cassini spacecraft 42 astrobiologist 42 FORUMS Talk 42 Kuiper belt 42 celestial objects 41 Orion Nebula 41 astrophysicists 41 elliptical galaxies 41 gamma ray burst 41 neutrinos 41 GOCE 41 Jean Jacques Dordain 41 Milky Way Galaxy 41 distant galaxy 41 June Scobee Rodgers 41 Peter Diamandis 41 Bill Gerstenmaier 41 Saturn moon 41 comets 41 WMAP 41 Mike Suffredini NASA 41 magnetar 41 Niels Bohr Institute 41 NASA Chandra 41 comet 41 Leonids 41 Shane Robison