Related by context. Frequent words. (Click for all words.) 57 Southern Observatory ESO 55 optical telescope 54 telescope 53 ESO Very Large Telescope 52 infrared telescope 51 Hispasat 51 Very Large Telescope 50 COROT 50 SELENE 49 OSIRIS 49 astronomical observatory 48 La Silla Chile 48 Telespazio 48 telescopes 48 interplanetary spacecraft 47 particle detector 47 CubeSat 47 polar orbiting 47 particle physics detector 46 Cassini Huygens 46 powerful particle accelerator 46 XMM Newton 46 New Horizons spacecraft 45 Mauna Kea Hawaii 45 Lutetia 45 particle physics experiment 45 GALILEO 45 Erasmus Mundus 45 observatory 44 orbiting telescope 44 Resolution Imaging 44 Square Kilometre Array 44 cosmic ray detector 44 WFC3 44 LCROSS mission 44 Celestron 44 geostationary satellite 44 CNES 44 optical telescopes 44 EUR4 44 KA SAT 44 interferometer 44 beamline 44 Arecibo Observatory 44 VLBA 43 Spectrometer 43 ESO 43 ExoMars 43 GMES 43 Solar Dynamics 43 spectrometers 43 Pan STARRS 43 Messenger spacecraft 43 Webb Telescope 43 Oceansat 2 43 beamlines 43 star Gliese 43 X ray telescope 43 moon Charon 43 adaptive optics 42 CALIPSO 42 Telescope 42 National Optical Astronomy 42 Canary Islands 42 LCLS 42 Very Large Array 42 observatories 42 Ariane rocket 42 Thirty Meter Telescope 42 Garching Germany 42 Euro# [003] 42 SATURN 42 Gemini Observatory 42 SMOS 42 WM Keck Observatory 41 Alpha Magnetic Spectrometer 41 orbiting Saturn 41 Space Agency 41 Galaxy Evolution 41 JWST 41 CERN Large Hadron 41 Automated Transfer Vehicle 41 field Infrared Survey 41 PARI 41 Observatories 41 EADS Astrium 41 LIGO 41 planetarium 41 Cassini orbiter 41 transmission electron microscope 41 European Synchrotron Radiation 41 Telescopes 41 Fresnel lens 41 CCD camera 41 orbiting observatory 41 DESY 41 Nicolaus Copernicus 41 QuickBird 41 Reconnaissance Orbiter 40 Portugal PSI 40 ARTEMIS