Related by context. Frequent words. (Click for all words.) 66 ESO Very Large Telescope 63 Very Large Telescope 59 Keck Observatory 58 WM Keck Observatory 57 Lick Observatory 56 Mauna Kea Hawaii 56 astronomical observatory 56 ESRF 55 Southern Observatory ESO 55 XMM Newton 54 COROT 54 optical telescope 54 Kitt Peak 53 VLBI 53 observatory 52 hyperspectral 52 telescope 52 particle detector 51 infrared telescope 51 Thirty Meter Telescope 51 interferometer 51 interplanetary spacecraft 51 observatories 51 telescopes 50 WFC3 50 photometric 50 LCLS 50 beamline 50 NICMOS 50 Mauna Kea 50 ESO 50 microlensing 50 IceCube 50 Palomar Observatory 50 photometer 50 Gemini Observatory 50 Hinode 50 STScI 50 Pan STARRS 49 Very Large Array 49 spectroscopic 49 Advanced Photon Source 49 European Synchrotron Radiation 49 NASA Goddard 49 Galaxy Evolution 49 CALIPSO 49 Chile Atacama desert 49 adaptive optics 49 infrared wavelengths 49 La Silla Chile 49 SMOS 48 National Optical Astronomy 48 JWST 48 ASTER 48 ESOC 48 HRSC 48 radial velocity 48 Comet McNaught 48 optical telescopes 48 solar corona 48 Resolution Imaging 48 HiRISE 48 THEMIS 48 astronomical objects 47 DESY 47 synchrotron radiation 47 distant galaxy 47 infrared mapping spectrometer 47 VLBA 47 Chile Atacama Desert 47 HARPS 47 particle detectors 47 LIGO 47 MetOp 47 Orion Nebula 47 asteroid Itokawa 46 NRAO 46 Spectrometer 46 MARSIS 46 spectrograph 46 unaided eye 46 Inca ruins 46 NASA ESA Hubble 46 Polar Regions 46 volcanically active 46 Atacama Desert 46 photometry 46 ringed planet 46 celestial objects 46 GOCE 46 Atacama desert 46 Valles Marineris 46 Crab Nebula 46 Sierra Madre Occidental 46 aurorae 46 lava tubes 46 Mini SAR 45 NASA Aqua 45 innermost planet 45 CloudSat 45 Telescope