Related by context. Frequent words. (Click for all words.) 68 distant galaxy 67 planets orbiting 66 HD #b [002] 65 rocky planets 65 exoplanets 65 super Earths 64 extrasolar planets 63 brown dwarfs 63 extrasolar planet 62 planets 62 exoplanet 62 brown dwarf 62 Orion Nebula 62 terrestrial planets 62 magnetar 61 galaxy cluster 61 unaided eye 61 dwarf galaxies 61 supernova explosion 61 Eta Carinae 61 COROT 60 GRBs 60 orbits 60 dwarf galaxy 60 distant galaxies 60 planet orbiting 60 elliptical galaxies 60 globular cluster 60 Milky Way Galaxy 59 XMM Newton 59 gamma ray burst 59 quasars 59 hot Jupiters 59 astronomical objects 59 Andromeda Galaxy 59 nebulae 59 pulsars 58 galaxy clusters 58 supernova remnant 58 globular clusters 58 galaxies 58 supernovae 57 celestial objects 57 neutron stars 57 Milky Way galaxy 57 spiral galaxies 57 gamma ray bursts 57 quasar 57 Large Magellanic Cloud 57 pulsar 57 infrared wavelengths 57 Betelgeuse 56 NASA Kepler 56 neutron star 56 X ray emission 56 WIMPs 56 supernova explosions 56 outer planets 55 optical telescopes 55 gravitational wave 55 ringed planet 55 Geminids 55 Earth magnetosphere 55 supernova 55 meteoroids 55 galaxy 55 astronomers 55 redshift 55 Spitzer Space Telescope 55 Gliese 54 asteroids 54 supernovas 54 spiral galaxy 54 supermassive black hole 54 nebula 54 supermassive black holes 54 substorms 54 fainter 54 Jupiter Saturn Uranus 54 Saturn moons 53 orbiting spacecraft 53 Sedna 53 WM Keck Observatory 53 asteroid belt 53 comet nucleus 53 spectroscopic 53 celestial bodies 53 interstellar dust 53 circular orbit 53 gravitational waves 53 Very Large Telescope 53 Milky Way 53 auroral 53 sunspot 52 habitable zone 52 cosmic rays 52 X ray Observatory 52 gamma rays 52 Jupiter moons 52 magnetosphere 52 Cassini Huygens