Related by context. Frequent words. (Click for all words.) 65 X ray emission 64 supernova explosion 64 Eta Carinae 64 galaxy cluster 63 magnetar 62 globular cluster 61 spiral galaxy 61 planet orbiting 60 distant galaxy 60 globular clusters 60 supernova remnant 60 celestial object 60 elliptical galaxies 59 galaxy clusters 59 HD #b [002] 59 gamma ray burst 59 neutron star 59 supermassive black hole 58 Earth magnetosphere 58 distant galaxies 58 nebula 58 brown dwarfs 58 GRBs 58 Milky Way Galaxy 58 XMM Newton 58 Andromeda galaxy 58 brown dwarf 58 ringed planet 58 unaided eye 57 dwarf galaxy 57 supernova explosions 57 extrasolar planet 57 Andromeda Galaxy 57 quasar 57 galaxies 57 COROT 57 spiral galaxies 57 Saturn rings 57 supernova 57 Orion Nebula 57 exoplanets 56 astronomical objects 56 astronomers 56 supernovae 56 Milky Way galaxy 56 spacetime 56 galaxy 56 rocky planets 56 redshift 56 quasars 55 super Earths 55 comet nucleus 55 WIMPs 55 neutron stars 55 extrasolar planets 55 pulsar 55 gamma ray bursts 55 muons 55 interstellar dust 55 optical telescopes 54 Betelgeuse 54 orbits 54 dwarf galaxies 54 gravitational lensing 54 hot Jupiters 54 neutrino 54 infrared wavelengths 54 cosmic rays 54 Milky Way 54 exoplanet 54 nebulae 54 atomic nuclei 54 gamma rays 54 gravitational wave 54 meteoroids 53 X ray Observatory 53 occultation 53 substorms 53 planets orbiting 53 Geminids 53 moon Titan 53 photonic crystal 53 Saturn moons 53 general relativity 53 luminosity 53 planets 53 coronal mass ejection 53 ejecta 53 supermassive black holes 52 gravitational tug 52 Large Magellanic Cloud 52 coronal mass ejections 52 Saturn moon Enceladus 52 quark gluon plasma 52 gravitational waves 52 Very Large Telescope 52 gravitationally 52 magnetosphere 52 infrared telescope 52 ESO Very Large Telescope 52 velocities