Related by context. Frequent words. (Click for all words.) 66 Herschel Space 62 ray Space Telescope 62 Southern Observatory ESO 61 Rosetta spacecraft 60 ESA XMM Newton 60 Exoplanet 59 Heliospheric Observatory SOHO 59 Lunar Reconnaissance Orbiter LRO 59 extrasolar planet 59 microlensing 59 COROT 58 VIRTIS 58 XMM Newton 58 STEREO spacecraft 58 interplanetary spacecraft 58 planet Uranus 58 Cassini Huygens spacecraft 57 imaging spectrometer 57 NASA ESA Hubble 57 OSIRIS 57 GALEX 57 Toutatis 57 spacecraft orbiting 57 orbiting Saturn 57 Gliese #d 57 Credits ESA 57 Comet Lulin 57 Kepler #b 56 CoRoT 7b 56 Mauna Kea Hawaii 56 E ELT 56 extrasolar 56 LOFAR 56 Wilkinson Microwave Anisotropy Probe 56 Galaxy Evolution 56 NASA Fermi Gamma 56 La Silla Chile 56 NASA Cassini 56 nicknamed Xena 56 HiRISE camera 56 Compton Gamma Ray 56 astronomical telescope 55 orbiting Hubble Space Telescope 55 Tycho Brahe 55 Nicolaus Copernicus 55 Total Lunar Eclipse 55 Gliese #g 55 journal Astronomy 55 Cassini Huygens 55 ESA Mars 55 astronomers 55 innermost planet 55 THEMIS 55 Jupiter moon Io 55 Extremely Large Telescope 54 laser altimeter 54 NASA Hubble Space 54 Diviner 54 Lulin 54 Siding Spring 54 SMOS 54 Oscillations 54 AKARI 54 journal Icarus 54 X ray telescopes 54 Messenger spacecraft 54 Beta Pictoris 54 IntergalaticEarth 54 STScI 54 Resolution Stereo Camera 54 Cancri 54 ESO Very Large Telescope 54 GIOVE B 53 SIRTF 53 NASA Kepler 53 National Astronomical Observatory 53 VLBI 53 Science Experiment HiRISE 53 NASA Cassini spacecraft 53 NASA JPL Caltech 53 Hubble observations 53 Mario Livio 53 NASA Spacecraft 53 OGLE 53 WASP #b 53 NASA Stardust spacecraft 53 distant galaxy 53 Nhat V. Meyer 53 infrared mapping spectrometer 53 Earthlike planets 53 Epsilon Eridani 53 Proba 2 53 gravitationally bound 53 infrared telescopes 52 earthshine 52 Spitzer Space Telescope 52 JPL manages 52 celestial object 52 solar corona 52 Stratospheric Observatory 52 High Accuracy Radial