Related by context. Frequent words. (Click for all words.) 64 Exoplanet 63 National Astronomical Observatory 62 microlensing 59 NASA Fermi Gamma 58 Gemini Observatory 58 Oscillations 58 CfA 58 LOFAR 58 XMM Newton 58 Southern Observatory ESO 57 OGLE 56 extrasolar 56 COROT 56 Mini SAR 56 Pan STARRS 56 Galaxy Evolution 55 Astrophysicist 55 NASA ESA Hubble 55 Siding Spring 55 Keck telescope 55 Astrophysics CfA 55 Steward Observatory 54 JPL manages 54 Monthly Notices 54 Subaru Telescope 54 Keck Observatory 54 STScI 54 gravitational wave 54 DZero 54 Planetary Science Institute 54 AKARI 54 VIRTIS 54 X ray telescopes 54 UA Lunar 54 Mauna Kea Hawaii 54 journal Icarus 54 LHCb 54 Adaptive Optics 54 Cassini Huygens 53 X ray telescope 53 interplanetary spacecraft 53 WM Keck Observatory 53 CALIPSO 53 journal Astronomy 53 IODP 53 WHIM 53 OSIRIS 52 Very Large Array 52 Planetary Physics 52 Hinode 52 NASA Cassini 52 NASA Chandra 52 astrophysical 52 Astrophysics 52 Wilkinson Microwave Anisotropy Probe 52 NASAs 52 ESO Very Large Telescope 52 Credit NASA JPL 52 aurorae 52 CIRES 52 Tycho Brahe 52 Spectrometers 52 National Optical Astronomy 51 galactic cosmic rays 51 European Synchrotron Radiation 51 radial velocity 51 Earthlike planets 51 Medical Institute HHMI 51 Smithsonian Astrophysical Observatory 51 IYA# 51 Biomarker Discovery 51 Helmholtz Centre 51 supercomputer simulations 51 astronomical telescope 51 Spectrometer 51 undersea volcanoes 51 NASA Spacecraft 51 infrared telescope 51 National d' Etudes 51 nanobacteria 51 solar corona 51 Observatories 51 Exopolitics 51 VLBI 51 NASA Kepler 51 Galileo spacecraft 51 planetary nebulae 51 particle physicists 51 laser altimeter 51 SPIRE 51 gravitational lensing 51 noctilucent clouds 50 Gamma Ray 50 spectroscopic 50 Suzaku 50 Spectroscopic 50 planetary atmospheres 50 Garching Germany 50 Carnegie Observatories 50 Observatory telescope 50 CrossRef Web