Related by context. Frequent words. (Click for all words.) 61 Eta Carinae 59 distant galaxy 59 Crab Nebula 58 magnetar 57 Gamma ray bursts 57 dwarf galaxy 57 Andromeda galaxy 57 Andromeda Galaxy 56 HD #b [002] 56 celestial object 55 Kuiper belt 55 habitable planets 55 Milky Way Galaxy 55 extrasolar planet 54 meteoroid 54 Fomalhaut 54 Uranus 54 supernova remnant 54 unaided eye 54 galaxy 54 gamma ray burst 54 constellation Leo 54 Geminids 54 supermoon 54 constellation Perseus 53 planetoid 53 planets orbiting 53 Betelgeuse 53 supernova explosion 53 planet orbiting 53 Gliese #g 53 supernova explosions 53 COROT 52 globular cluster 52 galaxy cluster 52 ringed planet 52 constellation Orion 52 Orion Nebula 52 Jupiter Saturn 52 comet 52 planet orbits 52 supernova 52 Milky Way galaxy 52 X ray emission 52 WIMPs 52 Solar System 51 habitable planet 51 accretion disk 51 Sedna 51 brown dwarfs 51 comet nucleus 51 terrestrial planets 51 Earth magnetosphere 51 GeV 51 planets 50 outer planets 50 rocky planets 50 planet 50 Cancri 50 Phobos 50 galaxy formation 50 planetary 50 astronomers 50 gravitational wave 50 extrasolar planets 50 dwarf galaxies 50 GRBs 50 occultation 49 Mimas 49 Saturn moon Enceladus 49 spiral galaxy 49 XMM Newton 49 neutron star 49 exoplanets 49 Cabeus crater 49 exoplanet 49 celestial objects 49 Saturn rings 49 cosmologists 49 redshift 49 Iapetus 49 cosmic rays 49 meteor shower 49 New Horizons spacecraft 49 cosmic ray 48 moon Titan 48 Titan Saturn 48 Enceladus 48 meteoroids 48 asteroid 48 celestial bodies 48 globular clusters 48 Leonids 48 distant galaxies 48 astronomical objects 48 Scorpius 48 nebulae 48 orbiting observatory 48 spiral galaxies 48 brown dwarf 48 Large Magellanic Cloud