Related by context. Frequent words. (Click for all words.) 64 HD #b [002] 63 planet orbits 63 magnetar 61 Eta Carinae 61 Crab Nebula 61 supernova explosion 61 planet orbiting 60 Gamma ray bursts 60 Gliese #g 60 super Earths 59 rocky planets 59 supernova 59 brown dwarf 59 Cancri 58 dwarf galaxy 58 brown dwarfs 58 supernova explosions 58 solar nebula 58 planetary nebula 58 X ray emission 58 elliptical galaxies 57 supernova remnants 57 extrasolar planet 57 distant galaxy 56 globular cluster 56 planets orbiting 56 globular clusters 56 terrestrial planets 56 Orion Nebula 56 supernova remnant 56 observable universe 56 supernovas 55 hot Jupiters 55 ejecta 55 GRBs 55 accretion disk 55 Spitzer Space Telescope 55 Milky Way Galaxy 55 meteoroids 55 gamma ray burst 54 radioactive decay 54 Fomalhaut 54 silicates 54 ionized gas 53 planets 53 quasar 53 visible wavelengths 53 supernovae 53 Betelgeuse 53 lunar soil 53 neutron star 53 dwarf galaxies 53 olivine 53 pulsar 53 Andromeda galaxy 53 galaxy formation 53 superhot 53 comet nucleus 53 COROT 52 Geminids 52 exoplanet 52 accreting 52 cosmic dust 52 habitable planets 52 Jupiter moons 52 exoplanets 52 galaxy cluster 52 quasars 52 comet 52 gravitationally 51 deuterium 51 Haumea 51 interstellar dust 51 galaxies 51 Kuiper belt 51 spiral galaxies 51 Saturn moons 51 habitable planet 51 Saturn moon Enceladus 51 spiral galaxy 51 distant galaxies 51 subatomic particle 51 constellation Leo 51 orbits 51 pulsars 50 celestial object 50 Large Magellanic Cloud 50 nebulae 50 meteoroid 50 astronomical objects 50 positrons 50 muons 50 interstellar medium 50 constellation Perseus 50 Saturn rings 50 redshift 50 quark gluon plasma 50 Milky Way galaxy 50 neutrino 50 unaided eye 50 XMM Newton