Related by context. Frequent words. (Click for all words.) 63 WASP #b 59 extrasolar planet 59 planets orbiting 58 Earthlike 58 Hubble observations 58 radial velocity 58 planet orbiting 58 planet orbits 57 Cancri 57 interplanetary spacecraft 57 Gliese #g 56 exoplanet 56 planets circling 56 SIRTF 56 brown dwarf 56 Eta Carinae 56 extrasolar planets 55 supernova explosion 55 habitable planets 55 planetary nebulae 55 protoplanetary disk 55 magnetar 55 galaxy formation 55 magnetars 55 microlensing 54 brown dwarfs 54 exoplanets 54 HAT P 54 A'Hearn 54 moon Charon 54 Cepheids 54 HD #b [002] 54 Jupiter moons 53 rocky planets 53 globular clusters 53 super Earths 53 planets 53 elliptical galaxies 53 EPOXI 53 astronomical observations 53 COROT 53 solar nebula 53 photometry 53 Filippenko 53 unaided eye 53 Hawking radiation 53 Lunine 53 astronomical objects 53 ultraviolet wavelengths 53 XMM Newton 52 terrestrial planets 52 gamma ray burst 52 Pasachoff 52 habitable planet 52 X ray emission 52 Alfred McEwen 52 VIRTIS 52 Kuiper Belt objects 52 orbits 52 auroral 52 HiRISE camera 52 distant galaxy 52 Keck telescope 51 innermost planet 51 Galaxy Evolution 51 Gehrels 51 supernova explosions 51 dwarf galaxy 51 Sedna 51 Galileo spacecraft 51 Oort Cloud 51 Algol 51 subatomic particle 51 globular cluster 51 star Gliese 51 Peyghambarian 51 orbiting 51 VLBI 51 Gamma ray bursts 51 supernova 51 solar corona 51 planetary nebula 51 active galactic nuclei 50 polar vortex 50 adaptive optics 50 meteoroid 50 circular orbits 50 redshifts 50 Nicolelis 50 ion propulsion 50 boson 50 aurorae 50 GRBs 50 astronomers 50 spectrographs 50 Spitzer Space Telescope 50 gravitational lensing 49 orbiting telescope 49 Cassini imaging 49 planet Uranus 49 Geminids