Related by context. Frequent words. (Click for all words.) 59 Geminids 58 Halley Comet 57 Perseids 57 constellation Leo 55 HD #b [002] 54 Sedna 54 Leonids 54 dwarf galaxy 54 Eta Carinae 54 supernova explosion 53 comets 53 ejecta 53 meteoroid 53 neutron star 53 magnetar 53 interstellar dust 52 comet 52 brown dwarf 52 nebula 52 supernova explosions 51 distant galaxy 51 Large Magellanic Cloud 50 brown dwarfs 50 Kuiper Belt 50 meteoroids 50 dwarf galaxies 50 gravitationally 50 comet dust 50 globular clusters 50 Andromeda Galaxy 49 Saturn rings 49 comet Wild 49 moons 49 X ray emission 49 nebulae 49 meteor shower 49 Andromeda galaxy 49 quasar 49 ionized gas 48 globular cluster 48 COROT 48 Saturn moon 48 celestial object 48 galaxy cluster 48 supernova 48 accreting 48 pulsar 48 Enceladus 48 coronal mass ejection 48 spiral galaxy 48 spiral galaxies 48 cometary 48 UB# [003] 47 Milky Way Galaxy 47 Ganymede 47 perigee 47 interstellar medium 47 supernova remnant 47 comet nucleus 47 Orion Nebula 47 planet orbiting 47 super Earths 47 Iapetus 47 elliptical galaxies 47 orbits 47 meteor showers 47 Betelgeuse 47 meteor 47 Saturn moons 46 Asteroid 46 radioactive decay 46 meteors 46 quasars 46 outer planets 46 Comet Tempel 1 46 gamma ray burst 46 supermassive black hole 46 GRBs 46 Itokawa 46 occultation 46 asteroid 46 cosmic rays 46 geomagnetic field 45 spring equinox 45 astronomical objects 45 ecliptic 45 exoplanet 45 hot Jupiters 45 magnetosphere 45 Milky Way 45 XMM Newton 45 dwarf planets 45 Uranus 45 olivine 45 rocky planets 45 Earth magnetosphere 45 astronomers 45 dwarf planet 45 WIMPs 44 habitable planet 44 Jupiter moons