Related by context. Frequent words. (Click for all words.) 70 extrasolar planet 69 HD #b [002] 66 Orion Nebula 66 distant galaxy 66 planets orbiting 64 exoplanets 64 extrasolar planets 64 planet orbiting 64 Eta Carinae 64 exoplanet 63 rocky planets 63 spiral galaxy 62 unaided eye 62 brown dwarf 62 galaxy cluster 62 dwarf galaxy 62 Milky Way Galaxy 61 GRBs 61 planets 61 globular clusters 61 gamma ray burst 61 redshift 60 quasar 60 quasars 60 brown dwarfs 60 occultation 59 supernova explosion 59 distant galaxies 59 comet 59 supernova 58 terrestrial planets 58 infrared wavelengths 58 nebulae 58 neutron star 58 spiral galaxies 57 interstellar dust 57 supermassive black hole 57 XMM Newton 57 Betelgeuse 57 gravitational lensing 57 supernovae 57 celestial objects 57 starlight 57 orbits 56 elliptical galaxies 56 infrared radiation 56 Milky Way galaxy 56 galaxies 56 Spitzer Space Telescope 56 nebula 56 Gliese 55 habitable zone 55 comet nucleus 55 fainter 55 gamma ray bursts 55 neutrino 55 Saturn rings 55 asteroid 54 Sedna 54 Scorpius 54 galaxy clusters 54 Milky Way 54 aurora 54 astronomers 54 Enceladus 54 pulsar 54 supernovas 54 gravitationally 54 comets 54 pulsars 53 Saturn moons 53 supernova explosions 53 ejecta 53 perigee 53 galaxy 53 ringed planet 53 UB# [003] 53 optical telescopes 53 asteroids 53 magnetosphere 53 Kuiper Belt 53 dwarf galaxies 53 Alpha Centauri 52 orbiting 52 Lutetia 52 Iapetus 52 celestial bodies 52 Pleiades 52 cometary 52 corona 52 interferometry 52 cosmic ray 52 neutron stars 52 Very Large Telescope 52 spectroscopic 52 auroras 52 Saturn moon 51 luminosity 51 outer planets 51 cosmic rays 51 planetary