Related by context. Frequent words. (Click for all words.) 64 dwarf galaxy 63 Eta Carinae 62 supernova explosion 59 supernova explosions 59 gravitationally 58 distant galaxy 58 rocky planets 57 comet 57 dwarf galaxies 57 Milky Way Galaxy 57 gamma ray burst 57 galaxy cluster 57 HD #b [002] 56 GRBs 56 neutron star 56 planets 55 planet orbiting 55 globular clusters 55 galaxy 55 elliptical galaxies 55 X ray emission 55 galaxies 55 Milky Way galaxy 55 quasar 55 super Earths 55 planets orbiting 55 spiral galaxies 55 supernova 55 Orion Nebula 55 supermassive black hole 54 terrestrial planets 54 neutron stars 54 comet nucleus 54 quasars 54 asteroid 54 Milky Way 54 Large Magellanic Cloud 53 brown dwarf 53 supernovae 53 hot Jupiters 53 interstellar dust 53 supernovas 53 galaxy clusters 53 Betelgeuse 52 outer planets 52 supermassive black holes 52 extrasolar planet 52 distant galaxies 52 earths 52 comets 52 brown dwarfs 52 ejecta 51 pulsar 51 orbits 51 ringed planet 51 coronal mass ejection 51 atomic nuclei 51 moons 51 exoplanet 50 Saturn rings 50 gamma rays 50 interstellar medium 50 fainter 50 gamma ray bursts 50 supernova remnant 50 nebulae 50 nebula 50 spiral galaxy 50 exoplanets 49 solar flares 49 planet 49 suns 49 Spitzer Space Telescope 49 spacetime 49 asteroid belt 49 pulsars 49 Sedna 49 asteroids 49 extrasolar planets 49 corona 49 Andromeda 49 magnetosphere 49 Earths 49 interstellar space 48 deuterium 48 impactor 48 supermoon 48 magnetic fields 48 Lutetia 48 Enceladus 48 accreting 48 meteor 48 Ophiuchus 48 Comet Tempel 1 48 gravitational waves 48 Jupiter moons 48 orbiting 48 COROT 48 olivine 47 cosmic ray 47 optical telescopes