Related by context. Frequent words. (Click for all words.) 67 Very Large Telescope 63 ESO Very Large Telescope 59 XMM Newton 59 planet orbiting 59 planet orbits 57 COROT 56 HD #b [002] 56 galaxy cluster 56 Cancri 56 Spitzer Space Telescope 56 distant galaxy 56 redshift 55 infrared wavelengths 55 Andromeda galaxy 54 X ray Observatory 54 visible wavelengths 53 WM Keck Observatory 53 VLBA 53 planets orbiting 53 Fomalhaut 53 celestial object 53 OSIRIS 53 astronomers 53 Large Magellanic Cloud 53 microlensing 52 HARPS 52 extrasolar planet 52 NASA Cassini spacecraft 52 Andromeda Galaxy 52 Gliese 52 Orion Nebula 51 spectrograph 51 GRB # 51 gamma ray burst 51 quasar 51 celestial objects 51 distant galaxies 51 supernova remnant 51 Palomar Observatory 50 interferometry 50 gravitational lensing 50 Eta Carinae 50 Resolution Imaging 50 NASA Aqua 50 Cassini spacecraft 50 unaided eye 50 journal Astronomy 50 optical telescopes 50 X ray emission 50 magnetar 49 MARSIS 49 Milky Way Galaxy 49 Lutetia 49 multispectral 49 spectroscopic 49 Gliese #g 49 optical telescope 49 OGLE 49 globular cluster 49 spiral galaxy 49 rocky planets 49 extrasolar planets 49 Astronomers 49 orbiting Saturn 49 infrared telescope 48 Milky Way galaxy 48 NASA Kepler 48 ringed planet 48 brown dwarf 48 SPIRE 48 spatial resolution 48 rover Opportunity 48 interferometer 48 NASA Chandra 48 dwarf galaxy 48 astronomical objects 48 gravitational tug 48 auroral 48 Cassini orbiter 47 infrared spectrometer 47 Betelgeuse 47 field Infrared Survey 47 Telescope 47 constellation Orion 47 Astrophysics 47 super Earths 47 Gemini Observatory 47 NASA Mars Reconnaissance 47 constellation Perseus 47 elliptical galaxies 47 GRBs 47 constellation Leo 47 galaxy clusters 47 exoplanets 47 ESA Mars 47 interplanetary spacecraft 47 gamma ray bursts 47 Advanced Camera 47 ionospheric 47 galaxies 47 Hinode