Related by context. Frequent words. (Click for all words.) 59 distant galaxy 58 Andromeda galaxy 58 planet orbits 57 galaxy cluster 57 planet orbiting 55 Cancri 55 Milky Way Galaxy 55 observable universe 55 Fomalhaut 55 Orion Nebula 55 constellation Leo 54 spiral galaxy 54 supernova explosion 54 visible wavelengths 54 constellation Orion 54 Large Magellanic Cloud 54 supernova remnant 53 Andromeda Galaxy 53 planets orbiting 53 HD #b [002] 53 solar corona 53 constellation Perseus 52 Crab Nebula 52 planetary nebula 52 quasar 52 Betelgeuse 52 Milky Way galaxy 52 X ray emission 51 nebula 51 active galactic nuclei 51 redshift 51 Eta Carinae 51 star Gliese 51 planetary nebulae 51 galaxy 50 unaided eye 50 celestial object 50 globular cluster 49 accretion disk 49 GRB # 49 infrared wavelengths 49 ecliptic 49 distant galaxies 49 heliosheath 49 dwarf galaxy 49 magnetar 48 quasars 48 orbiting 48 ringed planet 48 Very Large Telescope 48 astronomical objects 48 supermassive black hole 48 planetoid 48 Alpha Centauri 47 orbiting Saturn 47 GeV 47 auroral 47 solar nebula 47 elliptical galaxies 47 colliding galaxies 47 Mimas 47 ionized gas 47 celestial objects 47 Kuiper belt 47 galaxies 47 Arcturus 47 New Horizons spacecraft 47 coronal mass ejection 47 interstellar dust 46 gamma ray burst 46 orbits 46 interstellar medium 46 spiral galaxies 46 Cassiopeia 46 Jupiter moons 46 Milky Way 46 infrared 46 XMM Newton 46 fainter 46 shorter wavelengths 46 comet nucleus 46 supergiant 45 Voyager spacecraft 45 supernova remnants 45 Opportunity rover 45 THEMIS 45 orbited 45 west longitude 45 Iapetus 45 VLBA 45 COROT 45 NASA Cassini spacecraft 45 planets 45 globular clusters 45 brown dwarf 45 interstellar space 45 umbra 44 galaxy formation 44 Earth magnetosphere 44 supernova explosions 44 torus