Related by context. Frequent words. (Click for all words.) 51 spatial resolution 51 CCD camera 50 confocal 47 imager 46 spectroscopic 46 multispectral 46 synthetic aperture radar 46 COROT 46 photometric 46 Spectrometer 46 ESO Very Large Telescope 45 interferometer 45 infrared wavelengths 45 interferometry 45 spectra 44 coronal 44 beamline 44 XMM Newton 44 Resolution Imaging 43 Very Large Telescope 43 redshift 43 anisotropy 43 diffraction 42 spectrometer 42 wavelengths 42 optical microscope 42 wavefront 41 auroral 41 GOCE 41 reflectance 41 HiRISE 41 laser pulses 40 spectroscopy 40 spectral 40 MODIS 40 JWST 40 THEMIS 39 gravitational lensing 39 WM Keck Observatory 39 galaxy cluster 39 orbits 38 adaptive optics 38 Moderate Resolution 38 NASA Cassini spacecraft 38 X ray emission 38 distant galaxies 37 ESA Mars 37 optical telescopes 37 Saturn moon Enceladus 37 Orion Nebula 37 flyby 36 Andromeda galaxy 36 globular cluster 36 flybys 36 astronomical objects 35 panoramic camera 35 Space Telescope 35 Cassini 35 spacecraft 35 comet nucleus 35 Spitzer Space Telescope 35 Planck 35 X ray Observatory 35 Mars Reconnaissance Orbiter 35 orbiting spacecraft 35 Envisat 34 Saturn rings 34 MESSENGER 34 nebulae 34 ejecta 34 telescope 34 Orbiter 34 comet Hartley 2 33 Global Surveyor 33 astrophysical 33 supernova remnant 33 Landsat 33 WMAP 32 gamma ray burst 32 GRBs 32 planets orbiting 32 Advanced Camera 32 Hubble Telescope 32 Hubble Space Telescope 32 dwarf galaxy 32 brown dwarfs 31 planet orbiting 31 dwarf galaxies 31 thermal emission spectrometer 31 globular clusters 31 Hubble telescope 31 interstellar dust 30 orbiting telescope 30 Hubble 30 NASA Chandra 30 Mars Global Surveyor 30 gamma ray bursts 28 cosmic rays 28 orbiting observatory 27 orbiters 26 comet