Related by context. Frequent words. (Click for all words.) 53 Betelgeuse 51 Fomalhaut 50 Large Magellanic Cloud 50 planet orbits 50 Scorpius 49 Andromeda galaxy 49 WASP #b 49 Arcturus 49 photometer 49 constellation Orion 49 Andromeda Galaxy 49 galaxy cluster 48 planetary nebula 48 supernova remnant 48 constellation 48 star Gliese 48 nebula 48 constellation Leo 48 Mimas 48 planetary nebulae 48 dwarf galaxy 48 Algol 48 globular cluster 48 Orion Nebula 48 SDSS 47 Gamma 47 Cancri 47 Cassiopeia 47 ejecta 47 Deimos 47 XMM Newton 47 HD #b [002] 46 constellation Perseus 46 Andromeda 46 Galaxy Evolution 46 radial velocity 46 Omicron 46 nebulae 46 Nebula 46 Milky Way Galaxy 46 orbits 46 spectrographs 45 Phobos 45 Spica 45 galaxy 45 distant galaxy 45 photometry 45 X ray emission 45 Venusian 45 polar vortex 45 terrestrial planets 45 solar corona 45 planets circling 45 Crab Nebula 45 Oort Cloud 45 optical wavelengths 45 Suzaku 45 unaided eye 44 Kuiper Belt objects 44 supernova remnants 44 accretion disk 44 epsilon 44 Deneb 44 Cepheids 44 planet orbiting 44 NASA Cassini 44 Uranus 44 magnetar 44 spiral galaxies 44 redshifts 44 spiral galaxy 44 Eta Carinae 44 Pulsars 44 supernova explosion 44 Alpha Centauri 43 celestial object 43 muon 43 astronomical objects 43 globular clusters 43 magnetars 43 elliptical galaxies 43 active galactic nuclei 43 Jovian 43 redshift 43 moonlets 43 GRBs 43 COROT 43 fainter 43 quasar 42 Pleiades 42 Eris 42 Aldebaran 42 Type Ia supernovae 42 luminosity 42 meteoroids 42 Charon 42 comet nucleus 42 brown dwarf 42 galactic 42 distant galaxies 42 LINEAR