Related by context. Frequent words. (Click for all words.) 65 WASP #b 65 planet Uranus 65 Oort Cloud 64 planetary nebulae 64 Kuiper belt 63 polar vortex 62 radial velocity 62 ejecta 61 X ray emission 61 innermost planet 61 protoplanetary disk 61 perihelion 61 Kuiper Belt objects 61 Sedna 61 orbits 60 Galileo spacecraft 60 Cepheids 60 Eta Carinae 60 Iapetus 60 HD #b [002] 60 Jupiter Saturn 60 Crab Nebula 60 distant galaxy 60 planet orbits 60 Jupiter moons 60 aurorae 59 interstellar dust 59 active galactic nuclei 59 solar corona 59 ecliptic 59 Venusian 59 gravitationally 59 supernova explosion 59 Andromeda Galaxy 59 constellation Leo 58 COROT 58 moonlets 58 accretion disk 58 magnetic reconnection 58 Haumea 58 celestial object 58 Milky Way Galaxy 58 Phaethon 58 planetary nebula 58 outer planets 58 Gliese #g 58 Andromeda galaxy 58 magnetars 57 gravitational lensing 57 Earth magnetosphere 57 Fomalhaut 57 solar nebula 57 meteoroids 57 Saturn rings 57 globular cluster 57 planetesimals 57 microlensing 57 elliptical galaxies 57 occultation 57 planetoid 56 Galaxy Evolution 56 Betelgeuse 56 Gamma ray bursts 56 Uranus 56 observable universe 56 dwarf galaxy 56 Saturn moon 56 terrestrial planets 56 orbiting 56 cosmic ray 56 Nibiru 56 neutron star 56 cometary 56 circular orbit 56 planets 56 magnetosphere 56 orbiting planets 56 Lunar Prospector 56 XMM Newton 56 magnetar 56 ionized gas 56 Voyager spacecraft 56 galaxy formation 56 globular clusters 56 NASA Cassini 56 Valles Marineris 55 extrasolar planet 55 interplanetary spacecraft 55 Saturn moons 55 Cabeus crater 55 brown dwarfs 55 galaxy cluster 55 planet orbiting 55 outer crust 55 comet nucleus 55 coronal mass ejection 55 nebula 55 Halley comet 55 Orion Nebula 55 Cosmic rays 55 unaided eye