Related by context. Frequent words. (Click for all words.) 62 Fomalhaut 60 planetary nebula 58 planet orbits 57 Orion Nebula 57 planetary nebulae 56 nebula 56 WASP #b 56 protoplanetary disk 56 Carina Nebula 56 star Gliese 55 unaided eye 55 globular cluster 55 nebulae 55 Supernovae 55 distant galaxy 55 planets orbiting 54 Eta Carinae 54 magnetars 54 starbursts 54 ringed planet 54 solar corona 54 brown dwarf 54 accretion disk 54 galaxy cluster 54 constellation Leo 53 Oort Cloud 53 ultraviolet wavelengths 53 active galactic nuclei 53 XMM Newton 53 supernova explosion 53 HAT P 53 magnetar 53 HD #b [002] 53 Cancri 53 supernova remnant 53 planet Uranus 53 globular clusters 53 particle detectors 53 Kuiper belt 52 Galaxy Evolution 52 Andromeda Galaxy 52 galaxy 52 Andromeda galaxy 52 Crab Nebula 52 Gamma ray bursts 52 moonlets 52 planet orbiting 52 elliptical galaxies 52 Milky Way Galaxy 52 spiral galaxy 52 Kuiper Belt objects 52 gamma ray burst 52 constellation Orion 51 celestial object 51 ionized gas 51 spiral galaxies 51 colliding galaxies 51 planets 51 constellation Gemini 51 corona 51 photometer 51 brown dwarfs 51 Large Magellanic Cloud 51 auroral 51 X ray emission 51 GRB # 51 Nibiru 51 aurorae 51 constellation Perseus 51 extrasolar planets 51 planets circling 51 VIRTIS 50 Jupiter moons 50 Cosmic rays 50 La Silla Chile 50 supernova explosions 50 Betelgeuse 50 circular orbits 50 Gamma rays 50 extrasolar planet 50 orbits 50 Jupiter Saturn 50 innermost planet 50 Galileo spacecraft 50 ionised 50 Olympus Mons 50 habitable planets 50 fluorescing 50 NASA Cassini 49 New Horizons spacecraft 49 comet tail 49 celestial objects 49 dwarf galaxy 49 orbiting Saturn 49 radial velocity 49 infrared wavelengths 49 orbiting 49 comet nucleus 49 fainter 49 orbiting planets 49 CoRoT