Related by context. Frequent words. (Click for all words.) 59 globular cluster 58 Andromeda galaxy 57 celestial object 57 Andromeda Galaxy 57 Eta Carinae 57 supernova remnant 56 observable universe 56 planet orbits 56 planetary nebulae 56 distant galaxy 55 Kuiper belt 55 galaxy cluster 55 spiral galaxy 55 active galactic nuclei 55 star Gliese 54 Fomalhaut 54 Milky Way Galaxy 54 Crab Nebula 54 XMM Newton 54 nebula 53 GRB # 53 Cancri 53 dwarf galaxy 53 solar corona 53 magnetar 53 planet orbiting 53 Orion Nebula 52 planetary nebula 52 comet nucleus 52 accretion disk 52 unaided eye 52 Gliese 52 Solar System 52 ejecta 52 elliptical galaxies 52 redshift 52 ESO Very Large Telescope 52 globular clusters 52 orbits 51 Large Magellanic Cloud 51 galaxy 51 spacetime 51 ecliptic 51 gamma ray burst 51 brown dwarf 51 COROT 51 HD #b [002] 51 extrasolar planet 51 occultation 50 planets orbiting 50 X ray emission 50 OGLE 50 astronomers 50 astronomical objects 50 microlensing 50 Comet McNaught 50 constellation 50 Mimas 50 magnetosphere 50 constellation Leo 50 Milky Way galaxy 49 optical telescope 49 innermost planet 49 heliosphere 49 interferometry 49 Astrophysicists 49 astrophysical 49 auroral 49 Galaxy Evolution 49 brown dwarfs 49 infrared wavelengths 49 Gliese #g 49 habitable planets 49 astrophysicists 49 haloes 49 perigee 49 extrasolar planets 49 visible wavelengths 49 quasars 49 neutron star 49 constellation Orion 49 Nebula 48 Jupiter Saturn 48 VLBA 48 GeV 48 moons 48 anisotropy 48 ringed planet 48 OSIRIS 48 Saturn rings 48 interferometer 48 Pleiades 48 cigar shaped 48 distant galaxies 48 planets circling 48 magnetic reconnection 48 Betelgeuse 48 muon 48 starlight 48 torus 48 ionized gas