Related by context. Frequent words. (Click for all words.) 65 distant galaxy 64 Eta Carinae 63 supernova 63 supernova remnant 63 Crab Nebula 63 magnetar 62 supernova explosion 62 gamma ray burst 62 Andromeda galaxy 62 GRBs 61 HD #b [002] 60 galaxy cluster 60 planet orbiting 60 X ray emission 60 extrasolar planet 59 Andromeda Galaxy 59 Orion Nebula 59 Spitzer Space Telescope 59 X ray Observatory 59 Gliese #g 59 XMM Newton 58 super Earths 58 NASA Chandra 58 Milky Way Galaxy 58 Betelgeuse 58 dwarf galaxy 58 supernovae 57 exoplanets 57 spiral galaxy 57 extrasolar planets 56 Large Magellanic Cloud 56 Astronomers 56 gamma ray bursts 56 globular cluster 56 celestial object 56 supernovas 56 planets orbiting 56 brown dwarf 55 Milky Way galaxy 55 astronomers 55 globular clusters 55 galaxy 55 quasars 55 rocky planets 55 infrared telescope 55 Saturn moons 54 unaided eye 54 optical telescopes 54 Kuiper belt 54 ringed planet 54 elliptical galaxies 54 NASA Cassini spacecraft 54 astrophysicists 54 cosmic microwave background 54 distant galaxies 54 Very Large Array 54 quasar 54 galaxy clusters 54 galaxies 54 supernova explosions 53 redshift 53 substorms 53 meteoroid 53 supermassive black hole 53 exoplanet 53 dwarf galaxies 53 comet 53 Saturn rings 53 supermoon 53 brown dwarfs 53 habitable planet 52 Geminids 52 galaxy formation 52 Saturn moon Enceladus 52 spiral galaxies 52 habitable planets 52 nebula 52 Solar System 52 constellation Perseus 52 neutron star 52 Milky Way 52 NASA Kepler 52 quark gluon plasma 52 accretion disk 52 nebulae 51 planets 51 pulsars 51 Very Large Telescope 51 optical telescope 51 moon Titan 51 ESO Very Large Telescope 51 Iapetus 51 neutron stars 51 coronal mass ejection 51 sunspot 51 COROT 51 Space Telescope 51 infrared wavelengths 51 constellation Leo 51 Kepler telescope 51 pulsar