Related by context. Frequent words. (Click for all words.) 71 globular clusters 69 brown dwarfs 67 GRBs 67 pulsars 66 dwarf galaxy 66 quasars 65 elliptical galaxies 65 extrasolar planets 64 planets orbiting 64 supernova explosion 64 super Earths 64 brown dwarf 64 neutron stars 63 galaxy clusters 63 galaxies 63 exoplanets 63 dwarf galaxies 63 supernovae 63 quasar 63 extrasolar planet 62 exoplanet 62 supermassive black hole 62 neutron star 62 supernovas 62 Eta Carinae 62 supernova explosions 62 XMM Newton 61 nebulae 61 rocky planets 61 galaxy cluster 61 planets 61 Orion Nebula 61 Milky Way galaxy 61 galaxy 61 Milky Way Galaxy 60 redshift 60 orbits 60 astronomers 60 distant galaxy 60 supermassive black holes 60 planet orbiting 60 distant galaxies 59 supernova 59 spiral galaxies 59 terrestrial planets 59 gamma ray burst 59 pulsar 59 gamma ray bursts 58 nebula 58 astrophysical 58 infrared wavelengths 57 spiral galaxy 57 gravitationally 57 HD #b [002] 57 gravitational lensing 57 ejecta 57 X ray Observatory 57 optical telescopes 56 spectra 56 spectroscopic 56 Milky Way 56 gamma rays 56 orbiting 55 interstellar dust 55 planetary 55 unaided eye 54 neutrino 54 Kuiper Belt 54 WM Keck Observatory 54 dynamical 54 astrophysicists 54 comets 54 positrons 53 gravitational waves 53 occultation 53 Saturn rings 53 Astronomers 53 Gliese 53 Very Large Telescope 53 superfluid 53 magnetosphere 53 Spitzer Space Telescope 53 interstellar medium 52 Saturn moons 52 comet nucleus 52 olivine 52 outer planets 52 luminosity 52 Sedna 52 abundances 52 gamma ray 52 adaptive optics 52 spacetime 52 NASA Chandra 52 magnetic fields 52 suns 52 silicates 52 Betelgeuse 52 nuclei 52 GRB 52 corona