Related by context. Frequent words. (Click for all words.) 57 planet orbits 56 circular orbit 56 orbits 54 star Gliese 54 Fomalhaut 54 Cancri 53 perigee 53 planet orbiting 52 Large Magellanic Cloud 52 GeV 52 galaxy cluster 52 distant galaxy 51 Milky Way Galaxy 51 HD #b [002] 51 planetary nebula 51 constellation Leo 51 planets orbiting 51 solar corona 51 innermost planet 51 Kuiper belt 50 Sedna 50 unaided eye 50 Orion Nebula 50 Andromeda galaxy 50 elliptical orbit 50 brown dwarf 50 observable universe 50 ecliptic 50 globular cluster 50 #.#nm [001] 50 heliosheath 49 Andromeda Galaxy 49 redshift 49 angstroms 49 dwarf galaxy 49 micrometres 49 COROT 49 solar nebula 49 nebula 48 picoseconds 48 angstrom 48 constellation Perseus 48 Gliese 48 orbited 48 Betelgeuse 48 Comet McNaught 48 Jupiter Saturn 48 electron volts 48 rocky planets 47 femtoseconds 47 planetary nebulae 47 Eta Carinae 47 Crab Nebula 47 orbiting 47 fainter 47 visible wavelengths 47 Mimas 47 Milky Way galaxy 47 umbra 47 -# degrees Fahrenheit [002] 47 spiral galaxy 47 kilometers 47 neutron star 47 mm2 47 Iapetus 46 super Earths 46 celestial object 46 MeV 46 nanometers nm 46 planets 46 Orbiting 46 infrared wavelengths 46 asteroid belt 46 quasar 45 supernova explosion 45 annular eclipse 45 Earth magnetosphere 45 ellipse 45 -# degrees Celsius [001] 45 suns 45 km 45 Gliese #g 45 ejecta 45 Pleiades 45 X ray emission 45 Kuiper Belt 45 equatorial 45 equator 45 brown dwarfs 45 heliosphere 45 galaxy 45 meter spacing 45 supernova remnant 45 WM Keck Observatory 45 comet nucleus 45 spatial dimensions 45 habitable zone 44 accretion disk 44 Phaethon 44 NICMOS 44 occultation