Related by context. Frequent words. (Click for all words.) 45 Spitzer Space Telescope 45 nebula 45 planet orbiting 45 supernova explosion 44 constellation 44 X ray emission 44 supernova remnant 44 ecliptic 44 accretion disk 43 microlensing 43 supernova 43 habitable planets 42 Large Magellanic Cloud 42 Gamma ray bursts 42 Crab Nebula 42 Milky Way Galaxy 42 habitable planet 42 GRBs 42 auroral 42 brown dwarf 42 extrasolar planet 41 distant galaxy 41 Cassiopeia 41 Orion Nebula 41 supernovae 41 magnetar 40 XMM Newton 40 terrestrial planets 40 astronomical objects 40 Pleiades 40 nebulae 40 pulsar 40 Eta Carinae 40 supernova explosions 40 supernovas 40 Andromeda Galaxy 40 extrasolar planets 39 quasar 39 morphologies 39 planet orbits 39 globular clusters 39 spiral galaxy 39 COROT 39 elliptical galaxies 39 celestial object 39 HD #b [002] 38 constellations 38 Milky Way galaxy 38 WMAP 38 brown dwarfs 38 constellation Leo 38 dwarf galaxy 38 luminous 38 occultation 38 astronomical observations 38 ellipse 38 Andromeda galaxy 38 constellation Perseus 38 galaxy cluster 38 supermassive black hole 37 planets orbiting 37 horoscopes section 37 planets 37 Fomalhaut 37 Cancri 37 gamma ray burst 37 Jupiter Saturn 37 ESO Very Large Telescope 37 interplanetary spacecraft 37 astronomers 36 astrophysical 36 galaxies 36 Betelgeuse 36 quasars 36 unaided eye 36 Sedna 36 galaxy 36 Kuiper belt 35 cosmic microwave background 35 globular cluster 35 Milky Way 35 gamma ray bursts 35 cosmological 35 constellation Orion 35 Brownian motion 35 Mimas 35 Andromeda 35 Arcturus 35 gravitational attraction 34 interferometer 34 Uranus 34 observable universe 34 bright 34 VLBA 34 universe 34 orbiting Saturn 34 luminosity 34 upward sloping 34 orbiting 33 shines brightly 33 oscillations