Related by context. Frequent words. (Click for all words.) 73 Betelgeuse 73 dwarf galaxy 71 Eta Carinae 70 supernova 69 supernova explosion 69 brown dwarf 68 neutron star 68 HD #b [002] 67 nebula 67 gamma ray burst 67 super Earths 66 supernova explosions 66 distant galaxy 66 galaxy cluster 66 brown dwarfs 66 planet orbiting 66 quasar 66 X ray emission 66 supernovae 65 globular clusters 65 GRBs 65 elliptical galaxies 65 spiral galaxy 65 Large Magellanic Cloud 65 spiral galaxies 63 supermassive black hole 63 rocky planets 63 fainter 63 Orion Nebula 63 planets orbiting 62 galaxies 62 dwarf galaxies 62 Milky Way Galaxy 62 quasars 62 pulsar 62 neutron stars 62 galaxy 62 supernovas 62 Milky Way galaxy 61 galaxy clusters 61 hot Jupiters 61 extrasolar planet 61 gamma ray bursts 61 terrestrial planets 61 ejecta 61 supermassive black holes 61 redshift 60 nebulae 60 Milky Way 60 planets 60 unaided eye 60 gravitationally 59 exoplanets 59 exoplanet 58 extrasolar planets 58 orbits 58 accreting 57 distant galaxies 57 Sedna 57 comet 57 ringed planet 57 pulsars 57 infrared wavelengths 57 interstellar medium 57 Astronomers 57 sunspot 56 occultation 56 XMM Newton 56 Saturn rings 56 coronal mass ejection 55 gamma rays 55 corona 55 Iapetus 55 asteroid belt 55 comet nucleus 55 Cassiopeia 55 Scorpius 55 Gliese 55 constellation 54 cosmic microwave background 54 nuclei 54 interstellar dust 54 Geminids 54 astronomers 54 quark gluon plasma 54 outer layers 54 Spitzer Space Telescope 53 Jupiter moons 53 neutrino 53 comets 53 gravitational lensing 53 galactic 53 elliptical orbit 53 habitable zone 53 Enceladus 53 suns 53 luminosity 52 Ophiuchus 52 Pleiades 52 circular orbit 52 perigee