Related by context. Frequent words. (Click for all words.) 72 telescope 67 telescopes 64 infrared telescope 63 optical telescopes 62 Very Large Telescope 60 Telescope 60 observatory 59 adaptive optics 59 interferometer 59 WM Keck Observatory 58 ESO Very Large Telescope 58 JWST 57 observatories 55 optical microscope 55 Palomar Observatory 54 astronomers 54 COROT 54 IceCube 53 orbiting telescope 52 synchrotron 52 LSST 52 XMM Newton 52 spectrometer 52 infrared wavelengths 52 beamline 52 extrasolar planet 52 parabolic trough 51 Spitzer Space Telescope 51 transmission electron microscope 50 particle accelerator 50 THEMIS 50 Spectrometer 50 spectrometers 50 Observatories 50 distant galaxy 50 powerful supercomputers 50 Lowell Observatory 50 astronomical observations 49 LIGO 49 Cassini Huygens 49 Very Large Array 49 remote sensing satellites 49 Observatory 49 gravitational wave 49 solar concentrator 49 scanning electron microscope 49 gamma ray burst 49 orbiting observatory 49 imager 49 Orion Nebula 49 Eta Carinae 49 remote sensing satellite 49 Milky Way Galaxy 49 Resolution Imaging 48 GLAST 48 spectrograph 48 HD #b [002] 48 astronomer 48 Betelgeuse 48 Space Telescope 48 moon Titan 48 cyclotron 48 X ray Observatory 48 NASA Chandra 48 spectroscopic 48 Large Hadron Collider LHC 48 distant galaxies 48 lunar orbiter 47 panoramic camera 47 spacecraft 47 unaided eye 47 HiRISE 47 interferometry 47 planet orbiting 47 collider 47 infrared spectrometer 47 CloudSat 46 supernova remnant 46 celestial objects 46 hyperspectral 46 Hubble Space Telescope 46 Andromeda Galaxy 46 astronomical objects 46 Cassini orbiter 46 GOCE 46 Einstein theory 46 infrared 46 NASA Cassini spacecraft 46 satellite constellation 46 exoplanet 46 Webb Space Telescope 46 Astronomers 46 particle accelerators 46 Large Magellanic Cloud 46 orbiting 46 multispectral 46 quasars 46 satellites 46 substorms 45 X ray emission 45 ESO