Related by context. Frequent words. (Click for all words.) 59 XMM Newton 58 spectrograph 55 Hubble Space Telescope 55 Space Telescope 52 Cassini orbiter 52 spectrometer 52 orbiting telescope 52 Very Large Telescope 52 Hubble 52 Mars Reconnaissance Orbiter 51 adaptive optics 51 Hubble telescope 51 ESO Very Large Telescope 50 GOCE 50 interferometry 50 Hubble Telescope 49 NASA Cassini spacecraft 49 WM Keck Observatory 49 telescope 48 JWST 48 CCD camera 48 Mars Global Surveyor 48 spectroscopic 47 COROT 47 infrared wavelengths 47 THEMIS 47 NASA Mars Reconnaissance 47 panoramic camera 46 CCDs 46 NASA Hubble Space 46 infrared telescope 45 interferometer 45 Cassini 45 Mars Odyssey 45 spectroscopy 45 orbiter 45 X ray emission 45 NASA Chandra 45 multispectral 45 field Infrared Survey 44 Spitzer Space Telescope 44 orbiting spacecraft 44 imager 44 distant galaxies 43 infrared 43 Spectrometer 43 spectrometers 43 transmission electron microscope 43 Spectroscopy 43 optical telescopes 43 infrared spectrometer 43 Mars Polar Lander 43 celestial objects 43 Chandra X ray 43 astronomical observations 43 WMAP 43 NASA Mars Odyssey 43 MESSENGER 43 Phoenix lander 43 rover Opportunity 43 comet nucleus 43 spatial resolution 42 optical microscope 42 fluorescence microscopy 42 gamma ray burst 42 telescopes 42 Telescope 42 beamline 42 wavelengths 42 spacecraft 42 GRBs 42 redshift 42 Palomar Observatory 42 gravitational lensing 42 Orion Nebula 42 LIGO 42 wavefront 42 distant galaxy 42 occultation 42 LRO 41 dwarf galaxy 41 Cassini spacecraft 41 Orbiter 41 X ray Observatory 41 Cassini Huygens 41 astronomers 41 NASA Kepler 41 photometric 41 Atlantis astronauts 41 HiRISE 41 supernova remnant 41 optical telescope 40 quasar 40 ultraviolet 40 Planck 40 Mars rover 40 Raman spectroscopy 40 hyperspectral 40 planets orbiting 40 flyby 40 astrophysical