Related by context. Frequent words. (Click for all words.) 49 Keck telescope 48 astrophysicist 48 astronomer 47 Amateur astronomers 47 National Astronomical Observatory 47 astronomers 47 WM Keck Observatory 47 particle physicist 46 Jodrell Bank Observatory 46 Astrophysicists 46 Astrophysicist 46 Square Kilometre Array 46 Gehrels 46 Astronomer 45 telescopes 45 astrophysicists 45 telescope 45 LOFAR 45 astronomy 44 planetary scientist 44 Gemini Observatory 44 interplanetary spacecraft 44 Astronomy 44 Roger Highfield 44 pulsar 44 Synchrotron 43 Keck Observatory 43 observatories 43 synchrotron 43 observable universe 43 Telescopes 43 particle physicists 43 cosmologist 43 Mauna Kea Hawaii 43 Michio Kaku 43 optical telescopes 43 Extraterrestrial Physics 43 Pasachoff 43 distant galaxy 43 Andromeda galaxy 43 astronomical observations 42 meteor 42 gamma ray burst 42 Stephen Wolfram 42 Giant Magellan Telescope 42 Telescope 42 Queensland UQ 42 COROT 42 pulsars 42 A'Hearn 42 Kepler spacecraft 42 physicist 42 meteorite impacts 42 Cassini Huygens 42 substorm 42 optical telescope 42 Professor Hawking 42 meteoroid 41 CoRoT 41 Higgs 41 Batterham 41 Lick Observatory 41 particle detector 41 Filippenko 41 asteroid 41 Cosmologists 41 Planetary Science Institute 41 palaeontology 41 theoretical physicist 41 infrared telescope 41 magnetar 41 Johannes Kepler 41 Royal Astronomical Society 41 substorms 41 Oort Cloud 41 Prof Hawking 41 quantum optics 41 boson 41 Hawking radiation 41 Halley comet 41 WASP #b 41 habitable planets 40 Swinburne University 40 auroras 40 cosmic dust 40 physicists 40 orbiting observatory 40 Research Organisation CSIRO 40 Adaptive Optics 40 scramjet 40 galaxy cluster 40 microlensing 40 John Beddington 40 celestial object 40 astrobiologist 40 Rignot 40 Lulin 40 scientists 40 Einstein theories 40 Nasa Jet Propulsion 40 GRB #