Related by context. Frequent words. (Click for all words.) 67 Milky Way Galaxy 67 globular clusters 66 spiral galaxy 66 Orion Nebula 65 dwarf galaxy 65 galaxy cluster 64 HD #b [002] 64 planet orbiting 64 supernova remnant 63 unaided eye 63 distant galaxy 62 Eta Carinae 62 XMM Newton 62 Milky Way 62 brown dwarfs 62 GRBs 62 extrasolar planet 62 brown dwarf 62 astronomers 61 spiral galaxies 61 planets orbiting 61 X ray emission 61 nebulae 61 quasar 60 rocky planets 60 extrasolar planets 60 galaxies 59 quasars 59 nebula 59 Milky Way galaxy 59 supernova explosion 59 Betelgeuse 59 dwarf galaxies 59 gamma ray burst 59 super Earths 59 galaxy 58 supernova 58 galaxy clusters 58 elliptical galaxies 58 planets 58 exoplanet 58 Saturn rings 58 Large Magellanic Cloud 58 terrestrial planets 57 supernovae 57 distant galaxies 57 Very Large Telescope 57 Sedna 57 supermassive black hole 57 exoplanets 57 neutron star 57 astrophysicists 57 Saturn moons 57 celestial objects 56 supernovas 56 ejecta 56 Spitzer Space Telescope 56 Lutetia 56 hot Jupiters 56 gravitational lensing 56 redshift 56 gravitationally 56 ESO Very Large Telescope 55 comet nucleus 55 comet 55 Pleiades 55 Enceladus 55 occultation 55 gamma ray bursts 55 neutrino 55 olivine 54 NASA Chandra 54 WM Keck Observatory 54 Geminids 54 Kuiper Belt 54 infrared telescope 54 constellation 54 dwarf planets 54 UB# [003] 54 supermassive black holes 54 pulsar 54 silicates 53 Astronomers 53 Scorpius 53 optical telescopes 53 corona 53 cosmic microwave background 53 infrared wavelengths 53 X ray Observatory 53 Gliese 53 Cassiopeia 53 constellations 53 Jupiter moons 53 fainter 53 moon Titan 52 Solar System 52 neutron stars 52 supernova explosions 52 pulsars 52 Iapetus 52 sunspot