Related by context. Frequent words. (Click for all words.) 70 Very Large Telescope 69 ESO Very Large Telescope 63 Southern Observatory ESO 60 WM Keck Observatory 60 Very Large Array 57 XMM Newton 56 VLBI 56 La Silla Chile 55 ESRF 55 Keck Observatory 55 optical telescope 54 Mauna Kea Hawaii 54 Gemini Observatory 53 COROT 53 optical telescopes 53 telescopes 53 ESO 53 adaptive optics 52 microlensing 52 observatories 52 Lick Observatory 52 spectroscopic 52 VLBA 52 spectrographs 52 Calama 52 infrared telescope 51 radial velocity 51 OGLE 51 astronomical observatory 51 HiRISE camera 51 photometry 51 hyperspectral 51 interferometry 51 Spitzer Space Telescope 51 NASA ESA Hubble 51 X ray Observatory 51 European Synchrotron Radiation 51 particle detectors 50 Observatories 50 National Astronomical Observatory 50 photometer 50 Atacama 50 ASTER 50 HARPS 50 Chile Atacama Desert 50 volcanically active 50 Spectrometer 50 Arecibo Observatory 49 Galaxy Evolution 49 Chile 49 NASA Chandra 49 infrared wavelengths 49 WFC3 49 distant galaxy 49 planetary nebulae 49 interferometer 49 Palomar Observatory 49 Orion Nebula 49 extrasolar planet 49 Atacama Desert 48 National Optical Astronomy 48 telescope 48 visible wavelengths 48 gravitational wave 48 Eta Carinae 48 particle detector 48 NICMOS 48 Instituto de 48 planet orbiting 48 supernova remnant 48 beamline 48 Pan STARRS 48 Crab Nebula 48 neutrino 48 Atacama desert 48 Astrophysics CfA 48 unaided eye 48 exoplanet 48 Salta Argentina 48 Andromeda galaxy 48 Jülich 48 observatory 47 Cassini Huygens 47 MARSIS 47 Namib Desert 47 solar corona 47 photometric 47 Garching Germany 47 HRSC 47 infrared mapping spectrometer 47 HD #b [002] 47 astronomical observations 47 interplanetary spacecraft 47 QuickBird 47 WASP #b 47 distant galaxies 47 astronomers 47 Maricunga 47 synchrotron radiation 47 aurorae 47 infrared spectrometer