Related by context. Frequent words. (Click for all words.) 63 optical telescope 62 Pan STARRS 62 telescope 61 infrared telescope 60 WM Keck Observatory 60 Telescope 60 telescopes 58 ESO Very Large Telescope 58 COROT 58 Very Large Array 58 Very Large Telescope 57 astronomical observatory 57 Keck Observatory 56 LSST 56 observatories 55 Thirty Meter Telescope 55 optical telescopes 54 Observatories 54 Arecibo Observatory 54 hyperspectral 54 Kitt Peak 53 observatory 53 NASA Kepler 53 Lick Observatory 53 Gemini Observatory 53 interplanetary spacecraft 52 Palomar Observatory 52 Cassini Huygens 52 distant galaxy 51 LIGO 51 XMM Newton 51 beamline 51 adaptive optics 51 VLBA 51 THEMIS 51 JWST 50 LCLS 50 synchrotron 50 Galaxy Evolution 50 IceCube 50 OSIRIS 50 Telescopes 50 CubeSat 50 microlensing 50 Andromeda galaxy 49 astronomers 49 LCROSS mission 49 interferometer 49 planetary missions 49 Hubble Telescope 49 Space Telescope 49 visible wavelengths 49 HiRISE 48 moon Charon 48 solar corona 48 celestial object 48 spacecraft orbiting 48 Synchrotron 48 orbiting telescope 48 MARSIS 48 transmission electron microscope 48 Orion Nebula 48 Mars Pathfinder 48 Lowell Observatory 48 NASA Lunar Reconnaissance 48 Spitzer Space Telescope 48 Resolution Imaging 48 infrared wavelengths 47 spectrometer 47 X ray Observatory 47 gravitational wave 47 WM Keck Foundation 47 optical microscopy 47 ESRF 47 NASA Goddard 47 NASA Chandra 47 Solar System 47 NASA Astrobiology Institute 47 Astrophysicists 47 orbiting Saturn 47 astronomical objects 47 robotic spacecraft 47 astronomical observations 47 Hubble telescope 47 scanning electron microscope 47 spectrograph 47 interferometry 47 Hubble Space Telescope 47 extrasolar planets 47 SELENE 47 Cancri 47 Hinode 47 X ray telescope 46 Astrophysics 46 synchrotron radiation 46 nanosystems 46 astrophysicists 46 celestial objects 46 photonic crystal 46 Hubble observations 46 frequency comb