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(Click for frequent words.) 67 astrophysics 67 cosmological 67 galaxy formation 65 extragalactic 65 nucleosynthesis 64 quantum gravity 64 astrophysical phenomena 64 exoplanetary 63 X ray wavelengths 63 distant galaxies 63 dynamical 63 Gravitational waves 63 gravitational wave 62 Astrophysical 62 active galactic nuclei 62 neutron stars 62 gravitational waves 62 cosmological distances 62 particle acceleration 62 cosmology 62 cosmic phenomena 62 singularities 62 supernova explosions 62 GRBs 61 galactic cosmic rays 61 planetary 61 spectroscopic 61 quasars 61 blazars 61 astrobiological 61 particle astrophysics 61 supernovae 61 extrasolar 61 astrophysicists 61 Bose Einstein condensates 61 XMM Newton 60 gravitational radiation 60 supersymmetric particles 60 Type Ia supernovas 60 solar corona 60 general relativity 60 theoretical astrophysics 60 type Ia supernovae 60 magnetic reconnection 60 gamma ray bursts 60 Cosmic Microwave Background 60 occultations 60 elliptical galaxies 59 Einstein equations 59 planetary atmospheres 59 X ray emission 59 accretion disks 59 astrophysical objects 59 quantum mechanics 59 planetary nebulae 59 particle physics 59 magnetospheric 59 Type Ia supernovae 59 gravitational lenses 59 supersymmetric 59 astrometry 59 astronomical objects 59 X ray telescopes 59 cosmic rays 59 elementary particle physics 59 Particle physics 59 distant supernovae 59 astronomy 59 Carina constellation 59 electroweak 59 extrasolar planetary systems 58 cosmic ray 58 metallicity 58 supernovas 58 AGNs 58 X ray binary 58 galaxies 58 filamentary structure 58 interstellar clouds 58 circumstellar 58 X ray observatory 58 eclipsing binary 58 Kuiper belt objects 58 detect gravitational waves 58 astronomers 58 neutron star 58 high temperature superconductivity 58 astronomical observations 58 Kuiper Belt Objects 58 galaxy clusters 58 planets 58 luminous galaxies 58 globular clusters 58 Higgs bosons 58 neutrino 58 noctilucent clouds 58 supergiant star 58 Hawking radiation 58 superfluids 57 extrasolar planets 57 X ray binaries 57 planetary science 57 protoplanetary disks 57 supermassive black holes 57 Astrophysicists 57 relativity theory 57 gamma ray emission 57 galactic mergers 57 HD#b 57 Hubble observations 57 gravitational lensing 57 cosmic microwave background 57 nebulae 57 KIPAC 57 electrodynamics 57 neutrino oscillations 57 exoplanets orbiting 57 icy moons 57 cosmological observations 57 auroral 57 Solar System 57 cosmologists 57 SUSY 57 supermassive 57 planetary orbits 57 Earthlike planets 57 asteroids comets 57 jovian 57 brown dwarfs 57 stellar seismology 57 planets moons 57 physics 57 Earth magnetosphere 57 cosmic 57 galactic collisions 57 celestial objects 57 superstring theory 56 starburst galaxies 56 pulsars 56 supernova explosion 56 Gravitational lensing 56 solar flares 56 Higgs particle 56 habitable planets 56 neutrinos 56 reionization 56 blazar 56 supersymmetry 56 millimeter wavelengths 56 merging galaxies 56 circumstellar disks 56 superstrings 56 fainter objects 56 terrestrial planets 56 Milky Way halo 56 exoplanet 56 Astrophysics 56 spatially resolved 56 SN #A 56 homochirality 56 interstellar medium 56 nebulas 56 infrared astronomy 56 X ray pulses 56 spacetime 56 radial velocity 56 KBOs 56 ultracold 56 particle colliders 56 magnetar 56 starquakes 56 accretion disk 56 galaxy 56 Mercury magnetosphere 56 observational astronomy 56 Corot 7b 56 gamma ray burst 56 neutron scattering 56 dynamical evolution 56 LOFAR 56 Type Ia 55 globular cluster 55 Epsilon Aurigae 55 Dauphas 55 Gamma ray bursts 55 starburst galaxy 55 atmospheric 55 Venusian atmosphere 55 magnetic fields 55 magnetic monopoles 55 active galactic nucleus 55 lensing galaxy 55 nebular 55 LHC experiments 55 Astronomy 55 astrometric 55 type 1a supernovae 55 axions 55 WMAP 55 Einstein theory 55 Upsilon Andromedae 55 prebiotic chemistry 55 interferometry 55 subatomic 55 Kuiper belt 55 high redshift galaxies 55 neutrino physics 55 cosmological models 55 Kazantzidis 55 intracluster 55 quasar 55 Anthony Remijan 55 Maxwell equations 55 Corot 9b 55 binary asteroid 55 cosmic particles 55 CfA 55 quantum theory 55 infalling 55 coronal mass ejections CMEs 55 globulars 55 Gal Yam 55 quantum electrodynamics 55 comets asteroids 55 quantum mechanical 55 Henize #-# 55 heliospheric 55 sterile neutrino 55 RHESSI 55 rocky planets 54 cosmic ray flux 54 Magnetars 54 celestial mechanics 54 SMBH 54 Cepheids 54 intrinsic brightness 54 partial differential equations 54 auroral displays 54 Neutron stars 54 distant quasars 54 SDSS II 54 magnetosphere 54 comets 54 planetary scientist 54 ESA Integral 54 galactic 54 Cosmology 54 spectroscopic measurements 54 Virgo Cluster 54 Einstein relativity theory 54 astrophysicist 54 Milky Way galaxy 54 substorm 54 redshift 54 comets orbiting 54 Fermi telescope 54 coronal heating 54 proton decay 54 chemical abundances 54 RXTE 54 galactic nuclei 54 protoplanetary 54 cosmological parameters 54 spectroscopy 54 redshifts 54 gravitational 54 photosphere 54 red supergiants 54 galactic cores 54 gamma rays 54 neutrino particles 54 asteroidal 54 planets orbiting 54 Nima Arkani Hamed 54 gravitational microlensing 54 planet magnetosphere 54 theoretical cosmology 54 galactic alignment 54 atmospheric chemistry 54 supercomputer simulations 54 astronomer 54 superheavy elements 54 Red Rectangle 54 microlensing 54 novae 54 Planck satellite 54 optical wavelengths 54 SN#A 54 RS Ophiuchi 54 infall 54 atmospheric phenomena 54 numerical simulations 54 sunlike stars 54 exo planet 54 Bose Einstein condensation 54 ejecta 54 cosmos 54 Laser Interferometer Gravitational Wave 54 attosecond 53 Nikku Madhusudhan 53 LIGO 53 ultraviolet wavelengths 53 optical spectra 53 Relativistic 53 neutralinos 53 W boson 53 Mössbauer 53 MG J# +# 53 superfluidity 53 superconductivity 53 Geminga 53 planets atmospheres 53 particle detectors 53 spectroscopically 53 spectrographs 53 ARPES 53 interstellar cloud 53 orbiting gamma ray 53 extrasolar planetary 53 stellar occultations 53 Astrophysics Cambridge Mass. 53 muon neutrino 53 faint galaxies 53 Astrophysical Journal 53 Pluto Charon 53 masers 53 Io Europa 53 axion 53 Cosmic Microwave Background CMB 53 TrES 4 53 GRB #B 53 subsurface ocean 53 Filippenko 53 asteroseismology 53 substorms 53 astrobiologists 53 cosmic ray protons 53 Galilean moons 53 polarimetry 53 outer planets 53 gamma rays emitted 53 Saturn Enceladus 53 gamma ray 53 Earth ionosphere 53 mantle plumes 53 Descent Imager Spectral Radiometer 53 relativistic particles 53 stellar nurseries 53 Einstein theories 53 WIMPs 53 earthlike planets 53 kaons 53 magnetospheres 53 quark gluon plasma 53 galaxy M# [002] 53 GALEX 53 atomic nucleus 53 planetary astronomer 53 planets comets 53 Saturn magnetosphere 53 photochemical processes 53 Planetary Science Institute 53 galaxy M# [001] 53 extraterrestrial civilizations 53 Wolszczan 53 permanently shadowed craters 53 celestial bodies 53 Keck Interferometer 53 coronal loops 53 Pieter van Dokkum 53 particle physics experiments 53 nanomechanics 53 Eta Carinae 53 prebiotic molecules 53 decoherence 53 proplyds 53 planets orbiting distant 53 dwarf galaxies 53 quasiparticle 53 subatomic particles 53 protostars 53 auroral emissions 53 mineralogical composition 53 galaxies collide 53 topological insulators 53 Supersymmetry 53 Gamma ray 53 Milky Way Galaxy 53 hydrosphere 53 supernovae explosions 53 hadron 53 Supernovae 53 thermonuclear fusion 53 Einsteinian 53 spectroscopic observations 53 comet nucleus 53 galactic clusters 53 gamma ray bursts GRBs 53 blackholes 53 Planck 53 sterile neutrinos 53 aurorae 53 Avi Loeb 53 theoretical calculations 53 Auger Observatory 53 Cancri e 52 retrograde orbit 52 microphysical 52 mesosphere 52 Type Ia supernova 52 galaxy cluster 52 Alfven waves 52 photometric 52 Enceladus 52 NOAO 52 planetary nebula 52 J# +# [002] 52 VLTI 52 gamma ray observatory 52 dwarf galaxy 52 neutron spectrometer 52 physicists 52 Galactic cosmic rays 52 photochemistry 52 planets asteroids 52 maser 52 interstellar dust 52 situ measurements 52 ionospheric 52 Astrophysics MOA 52 solar flares coronal 52 cryosphere 52 Fomalhaut b 52 Active Galactic Nuclei 52 cosmological theories 52 millisecond pulsar 52 solar nebula 52 electron neutrinos 52 Cassini ion 52 particle accelerators 52 sulfur isotope 52 planemos 52 supernova remnants 52 exoplanet orbiting 52 highly elliptical orbits 52 neutrino oscillation 52 protostar 52 planetary Transits 52 HM Cancri 52 trans Neptunian objects 52 blackbody 52 infrared interferometry 52 Richard Mushotzky 52 radial velocity technique 52 gravitationally lensed 52 HII regions 52 observational cosmology 52 interferometric 52 Cepheid variables 52 cosmic microwave radiation 52 Gliese #c 52 Herschel Space 52 quantum particles 52 Wolf Rayet stars 52 Milky Way 52 distant supernovas 52 bolometers 52 planets orbits 52 WMAP satellite 52 Jonathan Lunine 52 protoplanetary disk 52 coronal mass ejections 52 gravitational lens 52 potentially habitable planets 52 muon 52 colliders 52 Galilean satellites 52 spherically symmetric 52 geodynamic 52 HUDF 52 X ray emitting 52 ESA XMM Newton 52 NASA Wilkinson Microwave 52 superfluid 52 Seyfert galaxies 52 atmospheric oceanic 52 GJ #b [001] 52 journal Meteoritics 52 visible wavelengths 52 XMM Newton observations 52 photometry 52 excitations 52 Gamma ray burst 52 cosmologist 52 spiral galaxies 52 UKIRT 52 neutralino 52 observable universe 52 exosphere 52 novas 52 interferometers 52 quantum optics 52 optical telescopes 52 synchrotrons 52 ultracold atoms 52 atom smashers 52 Milankovitch cycles 51 Steward Observatory 51 bosonic 51 antiproton 51 X ray Observatory 51 moon Io 51 journal Icarus 51 Earthlike planet 51 Arches Cluster 51 Exoplanets 51 WASP #b 51 Andromeda halo 51 Smithsonian astronomer 51 BP Psc 51 weakly interacting 51 meteoritic material 51 UCO Lick 51 planet HD #b 51 detect gamma rays 51 mantle convection 51 Herbig Haro 51 Jay Melosh 51 magnetars 51 climate forcings 51 comet 51 quantum entanglement 51 exoplanet hunter 51 gravitational redshift 51 antineutrinos 51 cometary 51 orbited Jupiter 51 Microlensing 51 heliophysics 51 cosmic ray particles 51 airglow 51 auroral activity 51 optical microscopy 51 Evolution Explorer 51 theoretical astrophysicist 51 supernova 51 Lyman alpha 51 faraway galaxies 51 Sara Seager 51 multipartite entanglement 51 exoplanets 51 solar irradiance 51 De Pontieu 51 APXS 51 scanning tunneling microscopy 51 Voorwerp 51 spectroscopic analysis 51 optical spectroscopy 51 radio occultation 51 infrared telescopes 51 colliding galaxies 51 Anisotropy Probe 51 gaseous planet 51 EPOCh 51 shorter wavelengths 51 AB Aurigae 51 KamLAND 51 CERN LHC 51 Fermi Gamma ray 51 Advanced LIGO 51 CoRoT 9b 51 ESO VLT 51 gamma ray telescope 51 polarimetric 51 celestial phenomena 51 quantum chromodynamics QCD 51 baryon 51 Adam Riess 51 Type 1a supernovae 51 Wilkinson Microwave Anisotropy Probe 51 distant galaxy 51 Shri Kulkarni 51 Einstein relativity 51 transiting exoplanets 51 microquasar 51 SEGUE 51 Beta Pictoris 51 transiting planets 51 dynamical systems 51 SNe Ia 51 imaging spectrometer 51 molecular dynamics 51 nonequilibrium 51 VY Canis Majoris 51 Saturn moons 51 radiative transfer 51 afterglows 51 TGFs 51 theoretical physicist 51 matter antimatter asymmetry 51 X ray observatories 51 Coma Cluster 51 electrons protons 51 Perseus Cluster 51 supermassive black hole 51 nonlinear optics 51 BaBar experiment 51 multiwavelength 51 Cosmic Background Explorer COBE 51 VIRTIS 51 solar neutrinos 51 radioactive decay 51 David Spergel 51 planets circling 51 antineutrino 51 ionosphere 51 Earths orbiting 51 weak gravitational lensing 51 planetary missions 51 GeV 51 quantum phenomena 51 Oort cloud 51 RHIC 51 Fermi LAT 51 SMBHs 51 CMEs 51 SN Ia 51 cosmic cannibal 51 WM Keck Observatory 51 atomic nuclei 51 type Ia supernova 51 Saturn aurora 51 brightnesses 51 inhabitable planets 51 ionized gas 51 gravity warps 51 Smithsonian Astrophysical Observatory 51 laser spectroscopy 51 antiparticle 51 optical interferometry 51 Chandra X ray 51 Oort Cloud 51 DZero experiment 51 Area Telescope LAT 51 collisional 51 SN #gy 51 protoplanet 50 radiative 50 protons collide 50 Jupiter moon Io 50 planetary astronomy 50 NASA Fermi Gamma 50 Cosmic Background Explorer 50 exo planets 50 Bose Einstein 50 Cosmologists 50 anthropic principle 50 Jupiter Uranus 50 boson 50 Kuiper Belt object 50 electron electron 50 electromagnetism 50 superluminal 50 MIT planetary scientist 50 IRC +# 50 gravitationally bound 50 nonlinear dynamics 50 Rayleigh scattering 50 HARPS instrument 50 moons circling 50 hydrogen helium 50 MINOS 50 infalling gas 50 Mojzsis 50 cosmic strings 50 AU Mic 50 Mandushev 50 Cygnus X 50 tholins 50 Interstellar Boundary Explorer 50 infalling matter 50 carbonaceous chondrites 50 Vakoch 50 proton proton 50 Delta Cephei 50 astronomical phenomena 50 Bose Einstein condensate 50 Fornax cluster 50 cryovolcanism 50 Epsilon Eridani 50 nanoindentation 50 COROT 50 zodiacal dust 50 anthropic 50 Kuiper Belt 50 periodic oscillations 50 Bok globules 50 theoretical physicists 50 Galaxy Evolution 50 interplanetary spacecraft 50 Wide Angle Search 50 Cassini scientist 50 quantum physics 50 submillimeter 50 Gaensler 50 red supergiant 50 foreground galaxy 50 magnetic substorms 50 MPIfR 50 ULP cepheids 50 electromagnetic flux 50 blue supergiant 50 V# Mon 50 gravitational interactions 50 energetic electrons 50 volcanic plumes 50 D CIXS 50 constellation Carina 50 CMB radiation 50 planets orbiting stars 50 Extraterrestrial Physics 50 linear collider 50 exoplanetary systems 50 XTE J# 50 eccentric orbits 50 Space Physics 50 gamma ray detectors 50 B mesons 50 sodium atoms 50 barred spiral galaxy 50 diffuse aurora 50 Helioseismic 50 eclipsing binaries 50 Orion Nebula 50 supernova remnant 50 NASA Cosmic Background 50 mesoscopic 50 neutrino experiments 50 Rydberg atom 50 electron positron 50 geomagnetism 50 GLAST 50 geomagnetic 50 Diviner 50 baryonic 50 Andromeda galaxy 50 planet Gliese #g 50 thermodynamic 50 SNfactory 50 ATLAS experiment 50 ChemCam 50 earthshine 50 SINFONI 50 antiferromagnets 50 Saturnian moon 50 exobiology 50 gravitons 50 ESA Cluster 50 Climate Experiment GRACE 50 planet orbiting 50 Jupiter Saturn 50 abiogenesis 50 Cold Dark Matter 50 GRB# 50 dwarf spheroidal galaxies 50 NuSTAR 50 ionized gases 50 coronal magnetic 50 YORP effect 50 mesoscale 50 vortices 50 extrasolar planet 50 planetary geologist 50 cometary nucleus 50 fundamental constants 50 Kailash Sahu 50 ULIRGs 50 photometer 50 ESO Very Large Telescope 50 Ken Herkenhoff 50 Observatory STEREO 50 Caltech physicist 50 supergiant stars 50 Gliese #d 50 habitable zones 50 atoms 50 Alfvén waves 50 Heisenberg Uncertainty Principle 50 moons orbiting 50 geomagnetic storms 50 neutrino detectors 50 Magellanic Clouds 50 magnetic monopole 50 COBE 50 telescopic observations 50 asteroids 50 femtosecond timescale 50 optical lattices 50 magma ocean 50 Omega Centauri 50 lunar craters 50 Hawking Radiation 50 iron pnictides 50 Beta Pictoris b 50 Saul Perlmutter 50 Diviner instrument 50 Mars Phobos 50 interstellar dust grains 50 nebula 50 Relations Observatory STEREO 50 SIM PlanetQuest 50 planetoids 50 Kaltenegger 50 gamma ray flares 50 fermion 50 heliosphere 50 stellar occultation 50 Aharonov Bohm effect 50 multiscale 50 Magnetic Imager 50 Spectrograph 50 X ray spectrometer 50 geochemists 50 NICMOS 50 Lawrence Krauss 49 tropospheric 49 neutral mass spectrometer 49 Earthlike 49 VHE gamma rays 49 Cosmic rays 49 MARSIS radar 49 Magnetic Imager HMI 49 ionisation 49 impactors 49 supersolid 49 globular cluster M# 49 astrobiology 49 alien civilizations 49 Dan Werthimer 49 coronagraph 49 infrared wavelengths 49 X ray telescope 49 hadrons 49 Manchester Jodrell Bank 49 Astrophysicist 49 relativistic 49 frequency combs 49 ionise 49 particles WIMPs 49 elliptical galaxy 49 neutrino mass 49 Array ALMA 49 RY Sagittarii 49 photoelectron spectroscopy 49 Decadal Survey 49 subatomic particle 49 x ray pulses 49 Higgs boson particle 49 cluster NGC 49 submillimetre 49 Harvard Smithsonian 49 Carnegie Observatories 49 Muons 49 electron neutrino 49 biosignatures 49 constellation Ursa Major 49 spectroscopic techniques 49 Cosmological 49 hematite mineral 49 antimatter particles 49 differential equations 49 physics astronomy 49 Cat Paw Nebula 49 Avishay Gal Yam 49 Volker Bromm 49 gamma ray telescopes 49 Herbig Ae Be 49 dynamical processes 49 Mario Livio 49 aurora 49 neutrons 49 Crab Pulsar 49 microlensing events 49 osmium 49 galactic bulge 49 distant quasar 49 infrared observatory 49 Wolf Rayet star 49 Coronal Mass Ejections CMEs 49 Konacki 49 ray Space Telescope 49 Solar flares 49 SDSS 49 Astrophysical Institute 49 fermions 49 planetary transits 49 GRB # 49 interstellar 49 hypervelocity stars 49 Christopher Chyba 49 Kip Thorne 49 geodynamics 49 quantum computation 49 spherical halo 49 celestial object 49 meteor impacts 49 Solar TErrestrial RElations Observatory 49 polar mesospheric clouds 49 millisecond pulsars 49 GJ#b 49 sonoluminescence 49 chondrites 49 PSR B# +# 49 nucleon 49 magnetic flux 49 observationally 49 Planetary Laboratory 49 elliptical galaxy NGC 49 cometary material 49 galactic magnetic 49 geoneutrinos 49 nanoworld 49 Neutron scattering 49 retrograde orbits 49 Anisotropy Probe WMAP 49 cosmological constant 49 planetary sciences 49 ionised gas 49 gravitational acceleration 49 Martian meteorites 49 interstellar dust clouds 49 George Gamow 49 SSRL 49 MAVEN 49 GJ #b [002] 49 ESA Herschel 49 planetary geology 49 Quarks 49 hypervelocity 49 silicon monoxide 49 ultracold polar molecules 49 Keck Telescope 49 Big Bang theory 49 crustal 49 meteorite impacts 49 superconducting materials 49 crustal thickness 49 quantum tunneling 49 Harlow Shapley 49 observable phenomena 49 moons Phobos 49 Sagittarius B2 49 radiative cooling 49 neutron scattering experiments 49 cosmic gamma rays 49 Hanny Voorwerp 49 brown dwarf 49 axial tilt 49 Thermal Emission Spectrometer 49 Planetary Transits 49 carbonate minerals 49 undiscovered particle 49 Antarctic Dry Valleys 49 Carina Nebula 49 Crab Nebula 49 earths 49 Steven Cummer 49 NanoSIMS 49 Sasselov 49 wave particle duality 49 Saturn auroras 49 quantum chromodynamics 49 Saturn rings 49 Bojowald 49 ion collisions 49 quasiparticles 49 dipole moment 49 Cometary 49 colossal magnetoresistance 49 starbursts 49 elongated orbits 49 PSR J# 49 electron ion 49 Pascale Ehrenfreund 49 Garching Germany 49 particle physicists 49 Joel Primack 49 Hubble Constant 49 coronal holes 49 P/# A2 49 physicist 49 Jovian moons 49 Neutrons 49 Kepler #b 49 photochemical reactions 49 Keck Observatory 49 phyllosilicates 49 UVOT 49 GZK cutoff