Related by context. Frequent words. (Click for all words.) 68 Orion Nebula 67 Fomalhaut 66 Milky Way Galaxy 66 galaxy cluster 66 supernova remnant 65 Andromeda galaxy 65 Crab Nebula 64 constellation Perseus 64 constellation Leo 64 HD #b [002] 63 spiral galaxy 63 Andromeda Galaxy 63 distant galaxy 62 nebula 61 Large Magellanic Cloud 61 X ray emission 61 infrared wavelengths 60 Milky Way galaxy 60 Eta Carinae 60 Betelgeuse 60 globular cluster 60 magnetar 60 quasar 60 auroral 60 unaided eye 60 planet orbiting 59 celestial object 59 dwarf galaxy 59 galaxy 58 redshift 58 gamma ray burst 58 planets orbiting 58 constellation 58 XMM Newton 58 spiral galaxies 58 ecliptic 57 Kuiper belt 57 quasars 57 Gliese 57 ringed planet 57 elliptical galaxies 57 extrasolar planet 57 comet nucleus 57 brown dwarf 57 optical telescopes 57 supernova explosion 57 globular clusters 56 astronomical objects 56 Saturn moon Enceladus 56 Spitzer Space Telescope 56 ionized gas 56 Milky Way 56 accretion disk 56 supernova 56 COROT 55 nebulae 55 distant galaxies 55 Very Large Array 55 Gliese #g 55 galaxies 55 fainter 55 GeV 55 extrasolar planets 54 celestial objects 54 Mimas 54 ejecta 54 orbits 54 galaxy clusters 54 occultation 54 GRBs 54 supermassive black hole 53 aurora 53 sunspot 53 exoplanets 53 brown dwarfs 52 auroras 52 Leonids 52 umbra 52 interstellar dust 52 equatorial 52 ESO Very Large Telescope 52 WM Keck Observatory 52 neutron star 52 comet 52 Earth magnetosphere 52 habitable planets 52 pulsar 52 Sedna 52 Kuiper Belt 52 annular eclipse 51 Cassiopeia 51 Pleiades 51 exoplanet 51 planets 51 orbiting 51 optical telescope 51 supernovae 51 Enceladus 51 mid latitudes 51 Very Large Telescope 51 rocky planets