Related by context. Frequent words. (Click for all words.) 52 optical telescope 51 telescope 49 LSST 48 COROT 47 infrared telescope 47 Cassini Huygens 47 CalTech 47 JWST 46 WM Keck Observatory 46 synchrotron 46 telescopes 46 optical telescopes 45 Very Large Telescope 45 adaptive optics 44 interferometer 44 gravitational wave 44 IceCube 43 observatory 43 National Ignition Facility 43 LIGO 43 Large Hadron Collider LHC 42 ESO Very Large Telescope 42 distant galaxy 42 observatories 42 Alpha Magnetic Spectrometer 42 astronomers 42 Spaceport 42 fusion reactor 42 ITER 42 Observatories 42 orbiting 41 Nasa 41 particle accelerators 41 NASA 41 Telescope 41 Webb Space Telescope 41 CloudSat 41 JAXA 41 Jodrell Bank 41 physicists 41 lunar rover 41 lunar orbiter 41 NASA Kepler 40 GLAST 40 International Thermonuclear Experimental Reactor 40 Caltech 40 THEMIS 40 particle accelerator 40 Jet Propulsion Laboratory JPL 40 Kavli Institute 40 transmission electron microscope 40 spacecraft 40 Hubble Telescope 40 particle collider 40 Planetary Laboratory 40 supercomputer 40 Stanford Linear Accelerator 40 Terahertz 40 JILA 40 cosmologist 40 atom smasher 40 orbiting telescope 39 Spitzer Space Telescope 39 SETI 39 Orion spacecraft 39 Rutherford Appleton 39 Ares V 39 Space Exploration 39 X ray Observatory 39 NASA Goddard 39 rover Opportunity 39 scramjet 39 Space Agency 39 Orbiting Carbon Observatory 39 planetary scientist 39 Orion Nebula 39 redshift 39 Milky Way Galaxy 39 Particle Physics 39 extrasolar planets 39 Space Telescope 38 robotic spacecraft 38 GENI 38 orbital outpost 38 Johannes Kepler 38 interferometry 38 ATLAS 38 X PRIZE 38 proton beam 38 astronomer 38 Solar System 38 galaxy cluster 38 terrestrial planets 38 Lowell Observatory 38 asteroid 38 Fermilab 38 astrophysics 38 collider 38 Ares rocket 38 supercomputing 38 Astrium