Related by context. Frequent words. (Click for all words.) 65 spectrometer 62 spectrometers 61 infrared 57 orbiting spacecraft 57 infrared radiation 56 multispectral 55 Spectrometer 55 spectroscopic 55 hyperspectral 55 ESO Very Large Telescope 55 NASA Cassini spacecraft 54 mass spectrometer 54 optical microscope 54 spectroscopy 54 infrared wavelengths 54 NASA Mars Reconnaissance 53 Raman spectroscopy 53 comet nucleus 53 X ray diffraction 53 Martian soil 52 interferometry 52 Cassini orbiter 52 Resolution Imaging 52 extrasolar planet 52 Martian surface 52 transmission electron microscope 52 Cassini 51 infrared imaging 51 XMM Newton 51 silicates 51 infrared detectors 51 optical telescopes 51 Very Large Telescope 51 CCD camera 51 NASA Aqua 51 Spitzer Space Telescope 50 HiRISE 50 infrared telescope 50 scanning electron microscope 50 infrared camera 50 Mars Reconnaissance Orbiter 50 HD #b [002] 49 infra red 49 synthetic aperture radar 49 THEMIS 49 adaptive optics 49 MESSENGER 49 magnetometer 49 spectrograph 49 MODIS 49 COROT 49 Itokawa 49 Phobos 49 panoramic camera 49 planets orbiting 49 Fluorescence 49 imager 49 ejecta 48 cometary 48 lidar 48 X ray emission 48 Gamma Ray 48 detector 48 Moderate Resolution 48 gamma ray 48 astronomers 48 interstellar dust 48 spectra 47 extrasolar planets 47 Cassini imaging 47 CloudSat 47 FTIR 47 spatial resolution 47 interferometer 47 Very Large Array 47 electron microscope 47 infrared laser 47 supernova remnant 47 unaided eye 47 STEREO 47 cosmic ray 47 Spectroscopy 47 astronomical objects 47 Mars Odyssey 47 NASA Mars Odyssey 47 lunar surface 47 magnetosphere 47 Cassini Huygens 47 Mars Global Surveyor 47 LCROSS 47 Cassini spacecraft 47 WM Keck Observatory 47 microscopy 47 optical telescope 47 planet orbiting 46 dust devils 46 multi spectral 46 subsurface 46 spectrophotometer 46 exoplanet 46 Planetary Laboratory