Related by context. Frequent words. (Click for all words.) 74 galaxy cluster 73 dwarf galaxy 72 quasar 71 Eta Carinae 71 supernova explosion 70 supermassive black hole 70 spiral galaxy 70 neutron star 69 distant galaxy 69 galaxy clusters 68 quasars 68 globular clusters 68 galaxies 67 Milky Way galaxy 67 elliptical galaxies 67 gamma ray burst 67 GRBs 66 Large Magellanic Cloud 65 supernova 65 spiral galaxies 65 neutron stars 65 nebula 65 dwarf galaxies 64 Milky Way Galaxy 64 supernovae 64 supernova explosions 64 brown dwarf 63 supermassive black holes 63 planet orbiting 63 HD #b [002] 63 Orion Nebula 63 galaxy 63 ejecta 62 brown dwarfs 62 rocky planets 62 pulsar 61 redshift 61 Milky Way 60 distant galaxies 60 gravitationally 60 gamma ray bursts 60 planets orbiting 60 supernovas 59 super Earths 59 extrasolar planet 59 exoplanets 59 comet nucleus 58 exoplanet 58 nuclei 58 pulsars 58 terrestrial planets 57 comet 57 Betelgeuse 57 Sedna 57 magnetosphere 56 interstellar medium 56 interstellar dust 56 sunspot 56 X ray Observatory 56 XMM Newton 56 extrasolar planets 56 orbits 56 planets 56 gamma rays 56 spacetime 55 fainter 55 nebulae 55 gravitational waves 55 corona 55 Saturn rings 54 astronomers 54 ringed planet 54 Gliese 54 Enceladus 54 neutrino 54 Iapetus 54 gravitational lensing 53 cosmic microwave background 53 infrared wavelengths 53 olivine 53 vortices 53 positrons 53 comets 53 Kuiper Belt 53 GRB 53 suns 53 asteroid 52 atomic nuclei 52 atomic nucleus 52 Spitzer Space Telescope 52 interferometry 52 luminosity 52 optical telescopes 52 unaided eye 52 cosmic ray 52 filaments 52 superfluid 52 orbiting 51 perigee 51 heliosphere 51 occultation