Related by context. Frequent words. (Click for all words.) 64 Ophiuchus 62 supernova remnant 61 nebula 59 magnetar 59 Betelgeuse 57 dwarf galaxy 57 Milky Way Galaxy 57 supernova 56 HD #b [002] 56 Eta Carinae 56 nebulae 56 supernova explosion 56 distant galaxy 55 galaxy cluster 55 ringed planet 55 spiral galaxy 55 Cassiopeia 54 occultation 54 Orion Nebula 54 Large Magellanic Cloud 54 galaxy 54 quasar 53 ecliptic 53 Pleiades 53 globular clusters 53 Milky Way 52 gamma ray burst 52 ejecta 52 Scorpius 52 planet orbiting 52 celestial 51 X ray emission 51 brown dwarf 51 cosmic microwave background 51 Gliese 51 redshift 51 spiral galaxies 51 umbra 50 comet 50 planets 50 Milky Way galaxy 50 Saturn rings 50 Deneb 50 galaxies 50 nova 50 suns 50 constellation 49 zodiac signs 49 Arcturus 49 ellipse 49 distant galaxies 49 moons 49 Uranus 49 supernovae 49 supernovas 49 infrared wavelengths 49 orb 49 extrasolar planet 49 aurora 49 Sedna 49 comet nucleus 49 coronal mass ejection 48 GRBs 48 corona 48 quasars 48 XMM Newton 48 brown dwarfs 48 sunspot 48 Kuiper Belt 48 planets orbiting 48 constellations 48 starlight 47 crescent moon 47 elliptical galaxies 47 cosmos 47 Enceladus 47 supermassive black hole 47 Spica 47 supernova explosions 47 orbits 47 astronomers 47 Astronomers 47 exoplanet 47 equinox 47 celestial bodies 46 Sagittarius 46 galactic 46 COROT 46 interstellar dust 46 comet Wild 46 supermoon 46 perigee 46 extrasolar planets 46 vernal equinox 46 exoplanets 46 Solar System 46 Andromeda 46 pulsars 46 starburst 46 outer planets 46 pulsar