Related by context. Frequent words. (Click for all words.) 63 supernova explosion 61 magnetar 60 dwarf galaxy 60 Eta Carinae 58 HD #b [002] 58 supernova explosions 58 brown dwarf 58 globular cluster 57 Gliese #g 56 Large Magellanic Cloud 56 planet orbiting 56 X ray emission 56 gamma ray burst 56 galaxy 55 supernova 55 Cancri 55 extrasolar planet 55 Crab Nebula 54 Andromeda galaxy 54 quasar 54 quasars 54 planet orbits 54 spiral galaxy 54 nebula 53 accretion disk 53 Kuiper belt 53 pulsar 53 galaxy cluster 53 supernova remnant 53 supernovas 53 comet 53 supermassive black hole 53 distant galaxy 53 exoplanets 52 Milky Way galaxy 52 ejecta 52 dwarf galaxies 52 brown dwarfs 52 neutron star 52 Sedna 52 globular clusters 52 supernovae 52 meteoroid 52 habitable planet 52 Milky Way Galaxy 51 Fomalhaut 51 exoplanet 51 interstellar dust 51 comet nucleus 51 coronal mass ejection 51 cosmic radiation 51 hot Jupiters 51 interstellar medium 51 planets orbiting 51 ringed planet 51 galaxies 51 XMM Newton 51 Orion Nebula 50 terrestrial planets 50 Kuiper Belt 50 New Horizons spacecraft 50 celestial object 50 rocky planets 50 Andromeda Galaxy 50 outer planets 50 accreting 50 volcanically active 50 Earth magnetosphere 50 super Earths 50 asteroid belt 50 meteoroids 50 planet 49 comet Wild 49 subatomic particle 49 comets 49 planets 49 moon Charon 49 cosmic ray 49 heliosphere 49 radioactive decay 49 GRBs 49 asteroid 49 cometary 49 quark gluon plasma 49 planetary 49 extrasolar planets 49 torus 48 astronomers 48 orbiting 48 ionized gas 48 Milky Way 48 spiral galaxies 48 muon 48 gravitationally 48 nebulae 48 Gliese 48 Mimas 48 Iapetus 48 pulsars 48 galaxy clusters 48 continental crust