Related by context. Frequent words. (Click for all words.) 56 optical telescope 50 Very Large Telescope 47 Observatory 46 telescope 45 observatory 44 astronomical observatory 44 WM Keck Observatory 44 astronomer 44 telescopes 42 VLBA 42 ESO Very Large Telescope 42 infrared telescope 42 Observatories 41 interferometry 41 optical telescopes 41 COROT 41 microlensing 41 Lick Observatory 41 X ray telescope 41 astronomy 41 constellation Orion 40 astronomers 40 Large Magellanic Cloud 40 distant galaxies 40 observatories 40 extinct volcano 40 Equatorial 40 X ray Observatory 40 Telescope 39 Fomalhaut 39 palaeontologist 39 distant galaxy 39 Orion Nebula 39 auroras 39 Astronomer Royal 39 supernova remnant 39 Very Large Array 39 Astronomers 39 planetary nebula 38 Palomar Observatory 38 extrasolar planets 38 adaptive optics 38 field Infrared Survey 38 Pan STARRS 38 cosmologists 38 astronomical objects 38 planet orbits 38 THEMIS 38 Astronomer 38 Kuiper belt 38 gravitational lensing 38 Andromeda galaxy 38 Spitzer Space Telescope 38 Arcturus 38 nebulae 38 infrared wavelengths 38 Voyager spacecraft 37 XMM Newton 37 astronomical observations 37 planetary scientist 37 stargazer 37 Cancri 37 general relativity 37 astrophysicist 37 cosmology 37 Gemini Observatory 37 Astronomical Society 37 palaeontologists 37 aurora 37 Andromeda Galaxy 37 OGLE 37 planet orbiting 37 Crab Nebula 37 Scorpius 37 spectrograph 37 quasars 37 astrophysical 37 terrestrial planets 37 galaxy cluster 37 interferometer 36 planetarium 36 orbiting Saturn 36 Kitt Peak 36 Southern 36 occultation 36 synchrotron 36 hyperspectral 36 cosmologist 36 GLAST 36 nebula 36 NASA Chandra 36 Astrophysicist 36 Milky Way galaxy 36 celestial object 36 NASA Cassini spacecraft 36 dwarf galaxy 36 supernova 36 African 36 extrasolar planet 36 HD #b [002] 36 constellation