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(Click for frequent words.) 76 Cosmic Microwave Background CMB 74 cosmic microwave background 69 CMB radiation 69 Planck satellite 67 WMAP satellite 67 filamentary structure 66 NASA Wilkinson Microwave 66 Wilkinson Microwave Anisotropy Probe 65 Bug Nebula 65 jovian 65 Comet Halley 64 Corot 7b 64 Planck telescope 64 Kuiper Belt Objects 64 Adam Riess 64 TrES 4 64 Kuiper belt objects 64 permanently shadowed craters 64 retrograde orbit 64 gamma ray observatory 64 planet magnetosphere 64 supersymmetric particles 64 Fermi telescope 63 solar corona 63 Mössbauer 63 GJ #b [001] 63 circumstellar 63 GJ #b [002] 63 Rayleigh scattering 63 Delta Cephei 63 circumstellar disks 63 solar nebula 63 constellation Eridanus 63 interstellar cloud 63 accretion disks 63 exoplanetary 63 airglow 63 X ray telescopes 63 sterile neutrino 62 magnetospheric 62 SIRTF 62 icy moons 62 Maunder minimum 62 exobiology 62 planetary Transits 62 distant supernovae 62 Geminga 62 cosmological distances 62 nucleosynthesis 62 Upsilon Andromedae 62 trans Neptunian objects 62 protoplanetary 62 galaxy redshift 62 SN #A 62 Anisotropy Probe 62 Galilean moons 62 Cosmic Background Explorer 62 comets asteroids 62 galactic cosmic rays 62 smallest exoplanet 62 cosmic microwave radiation 62 gamma rays emitted 62 Cosmic Background Explorer COBE 61 cosmic phenomena 61 planet Uranus 61 RS Ophiuchi 61 P/# A2 61 coronal loops 61 Alfven waves 61 magma ocean 61 galaxy formation 61 Fomalhaut b 61 exo planet 61 Mercury magnetosphere 61 Venusian atmosphere 61 reionization 61 particle astrophysics 61 gravitational radiation 61 Anisotropy Probe WMAP 61 zodiacal light 61 earthshine 61 backscattered 61 Bok globules 61 outer planets 61 polarimetry 61 comets orbiting 61 nebular 61 planetary nebulae 61 Orion nebula 61 gaseous planet 61 Epsilon Eridani 61 superstrings 61 WMAP 61 silicate dust 61 SNR #-#.# 61 SDSS II 61 Corot 9b 61 mantle plumes 61 Sagittarius B2 61 Evolution Explorer 61 heliospheric 61 ESA XMM Newton 61 Oort Cloud 61 brightest supernova 61 Magnetars 60 protoplanet 60 magnetic monopoles 60 moons Phobos 60 noctilucent clouds 60 RHESSI 60 sundog 60 photosphere 60 planets comets 60 galaxy M# [001] 60 MARSIS radar 60 GJ#b 60 celestial sphere 60 moon Mimas 60 magnetic polarity 60 NASA THEMIS 60 Kuiper Belt Object 60 HD#b 60 distant supernovas 60 planets atmospheres 60 GRB #B 60 Galileo spacecraft 60 Saturn Enceladus 60 starquakes 60 WASP #b 60 Saturnian moon 60 Oort cloud 60 type Ia supernovae 60 X ray afterglow 60 VY Canis Majoris 60 Giovanni Cassini 60 polar vortex 60 comet Tempel Tuttle 60 Diviner 60 Earthlike planets 60 astrophysical 60 Milky Way halo 60 X ray wavelengths 60 planets asteroids 60 proplyds 60 infrared astronomy 60 AGNs 60 lensing galaxy 60 Gliese #c 60 Henize #-# 60 ESA Herschel 60 antineutrinos 60 cosmic ray flux 59 neutralinos 59 moons orbiting 59 retrograde orbits 59 Hubble observations 59 Saturnian 59 missing baryons 59 interstellar clouds 59 Toutatis 59 polar mesospheric clouds 59 Hanny Voorwerp 59 Martian dust 59 moon Enceladus 59 Ulysses spacecraft 59 Stephan Quintet 59 X ray observatory 59 X ray emission 59 constellation Carina 59 planets Uranus 59 MG J# +# 59 dust enshrouded 59 ionized hydrogen 59 Hawking radiation 59 galactic cores 59 electron neutrinos 59 planemos 59 SPICAM 59 RS Oph 59 protoplanetary disk 59 millisecond pulsar 59 Kuiper belt 59 PSR B# +# 59 cryovolcanism 59 RRATs 59 Higgs bosons 59 APXS 59 Galilean satellites 59 infall 59 extrasolar 59 electron ion 59 XMM Newton 59 exo planets 59 occultations 59 Omega Centauri 59 Gravitational waves 59 eclipsing binary 59 SN#A 59 VHE gamma rays 59 neutrino oscillation 59 outermost planets 59 asteroseismology 59 energetic electrons 59 spectroscopic measurements 59 extrasolar planet 59 COROT 7b 59 SN #C 59 lunar craters 59 sunlike stars 59 Coma Cluster 59 rocky extrasolar planet 59 Galaxy Evolution 59 spiral nebulae 59 exoplanets planets 59 moonquakes 59 NASA Far Ultraviolet 58 dynamical evolution 58 nebula NGC 58 axions 58 ESA Integral 58 physicist Max Planck 58 stellar seismology 58 subsurface ocean 58 Comet Holmes 58 distant quasars 58 interplanetary spacecraft 58 spectroscopically 58 Composite Infrared Spectrometer 58 tropospheric 58 Convection Rotation 58 gamma ray emission 58 COROT 58 martian meteorites 58 solar neutrinos 58 Virgo Cluster 58 Fermi Gamma ray 58 MARSIS 58 lunar perigee 58 protoplanetary disks 58 transiting exoplanet 58 Fermi LAT 58 AB Aurigae 58 NASA Lunar Prospector 58 Saturn rings 58 asteroidal 58 Jupiter moon Io 58 extrasolar planetary systems 58 polar craters 58 Comet Hartley 58 Wilkinson Microwave Probe 58 cosmic ray 58 Crab Nebula 58 KH #D 58 constellation Aquarius 58 Epsilon Aurigae 58 Cometary 58 auroral emissions 58 V# Mon 58 magnetic substorms 58 Quadrantids 58 planetary orbits 58 lunar crust 58 cosmic cannibal 58 planet HD #b 58 X ray pulses 58 planets orbiting distant 58 planets orbits 58 Earth ionosphere 58 HiRISE image 58 planets moons 58 spacecraft flyby 58 exoplanet orbiting 58 GALEX 58 lunar meteorites 58 X ray spectrometer 58 luminous galaxies 58 matter antimatter asymmetry 58 Caloris 58 icy comets 58 Cancri e 58 Galactic cosmic rays 58 SeaWiFS 58 antihelium 4 58 spatially resolved 58 supernova remnant 58 AKARI 58 Cepheid variables 58 ray Space Telescope 58 Red Rectangle 58 silicate grains 58 Diviner instrument 58 Earthlike 58 magnetar 58 Kailash Sahu 58 distant galaxies 58 comet nucleus 58 COBE satellite 58 HUDF 58 extrasolar worlds 58 Milankovitch cycles 58 particle acceleration 58 radar altimetry 58 astrophysical phenomena 58 silicon monoxide 58 Trifid 58 strange quark 58 homochirality 58 Planetary Transits 58 Grillmair 57 Explorer WISE 57 NASA Cosmic Background 57 blue supergiant 57 Gravitational lensing 57 meteoroid impacts 57 Neutron stars 57 Rosette Nebula 57 Gondolo 57 auroral activity 57 Pluto Charon 57 intrinsic brightness 57 rotational axis 57 neutrino oscillations 57 inhabitable planets 57 Astrophysical 57 UCO Lick 57 spectral fingerprint 57 Gerard Kuiper 57 observable universe 57 radioactive nuclei 57 Krimigis 57 boson 57 constellation Ursa Major 57 proton proton collisions 57 Churyumov Gerasimenko 57 Saturnian moon Titan 57 Higgs particle 57 crystalline silicates 57 stellar occultations 57 ESO VLT 57 redshifted 57 Voyager spacecraft 57 isotopic ratios 57 Kepler 9c 57 constellation Virgo 57 lunar equator 57 Lyman alpha 57 zodiacal dust 57 cluster NGC 57 Jovian moons 57 Cassini flyby 57 Alycia Weinberger 57 gravitational tides 57 Veil Nebula 57 reflection nebula 57 Gamma ray burst 57 Ontario Lacus 57 Heliospheric Observatory SOHO 57 blackbody 57 Vourlidas 57 Comet Tempel Tuttle 57 galaxy M# [002] 57 planet Gliese #g 57 Trifid Nebula 57 Exoplanet 57 axial tilt 57 quantum particle 57 plasmasphere 57 globular cluster M# 57 moons circling 57 auroral 57 spherical halo 57 orbited Jupiter 57 Gaensler 57 Kepler #b 57 Hubble Space Telescope HST 57 ESA Planck 57 cosmic ray particles 57 Helix Nebula 57 Cosmologists 57 NASA STEREO 57 G#.# +#.# 57 orbiting gamma ray 57 Viking orbiters 57 galactic disk 57 electron orbits 57 neutron spectrometer 57 ROSAT 57 Nikku Madhusudhan 57 Spitzer infrared spectrograph 57 Earthlike planet 57 absorbs photons 57 nightglow 57 Neutron Detector 57 type Ia supernova 57 planetary magnetospheres 57 Gamma ray bursts GRBs 57 outer corona 57 extrasolar planets orbiting 57 Hot Jupiters 57 galaxy cluster 57 Dumbbell Nebula 57 neutralino 57 Cassini flybys 57 intracluster 57 blazars 57 superheavy elements 57 Supernova #A 57 J# +# [002] 57 Doppler shift 57 wave particle duality 57 Saturn magnetosphere 57 cesium atom 57 cosmic strings 57 LOFAR 57 Upsilon Andromedae b 57 blackbody radiation 57 magnetic excitations 57 moonlet 57 millisecond pulsars 57 gluon 57 Quadrantid meteor shower 57 submillimeter wavelength 57 planetary nebulas 57 IRC +# 57 HM Cancri 57 faint galaxies 57 binary asteroid 57 periodicities 57 YORP effect 57 CoRoT satellite 57 atmospheric circulations 57 RXTE 57 shadowed craters 57 Saturn outermost 57 interstellar dust 57 astrophysical objects 57 moon Io 57 mesosphere 57 supernova remnants 56 sulfur isotope 56 Saturn moon Mimas 56 planetary transits 56 ionized particles 56 chondrites 56 spaceweather.com 56 interstellar boundary 56 galactic cosmic ray 56 gravitational perturbations 56 Gamma ray bursts 56 Bonnie Buratti 56 radiometers 56 exosphere 56 chondrules 56 extragalactic 56 Spectroscopic 56 magnetars 56 dirty snowballs 56 Moon Mineralogy Mapper M3 56 Saturn Cassini 56 distant quasar 56 crustal thickness 56 Mini SAR 56 NASA Cassini spacecraft 56 HARPS instrument 56 Wolszczan 56 Triangulum Galaxy 56 Neptune Uranus 56 helium nuclei 56 zodiac constellations 56 X ray binaries 56 Mini TES 56 Solar TErrestrial RElations Observatory 56 Heterodyne Instrument 56 Cygnus Lyra region 56 X rays gamma rays 56 Cat Paw Nebula 56 ultracold gases 56 Titan smoggy 56 ULIRGs 56 particle analyzers 56 Type Ia supernovas 56 weakly interacting 56 Crab pulsar 56 diffuse aurora 56 detect gravitational waves 56 infalling 56 Hipparcos 56 interstellar dust clouds 56 metallicity 56 radio occultation 56 Planck spacecraft 56 magnetic dynamo 56 spinning neutron stars 56 gravity warps 56 Beta Pictoris 56 cosmic ray intensity 56 Nasa spacecraft 56 Eagle Nebula 56 merging galaxies 56 coronal holes 56 interstellar dust grains 56 circumstellar disk 56 stellar occultation 56 ESA Cluster 56 Earth orbiting satellites 56 Comet Hartley 2 56 Nasa Kepler 56 CoRoT 9b 56 graphite whiskers 56 Hellas Basin 56 Exoplanets 56 radial velocity 56 Franck Marchis 56 SN #D 56 geoneutrinos 56 lowermost mantle 56 Syrtis Major 56 Fermi Telescope 56 submillimeter 56 starburst galaxy 56 radiative transfer 56 chromosphere 56 Carina constellation 56 noble gases 56 neutrino particles 56 spacetime 56 Crab Pulsar 56 W boson 56 comet McNaught 56 non baryonic 56 largest moon Charon 56 Type Ia supernova 56 periodic dimming 56 emission nebula 56 PSR J# 56 baryon acoustic oscillations 56 polarimetric 56 submillimetre 56 stellar nurseries 56 Saturn moon Iapetus 56 Type Ia supernovae 56 mu Arae 56 meteoritic 56 ionized gases 56 Kuiper Belt object 56 Cepheids 56 Spectrograph 56 ringed planet 56 UDFy # 56 Lunine 56 Bose Einstein condensates 56 Pieter van Dokkum 56 Martian craters 56 Huygens descent 56 Jonathan Lunine 56 filamentary 56 exoplanets orbiting 56 particle colliders 56 Martian meteorites 55 cosmologists 55 lobate scarps 55 proto galaxies 55 astrobiological 55 celestial phenomena 55 planets orbiting stars 55 VB #b 55 planetary surfaces 55 emits X rays 55 Vikhlinin 55 Lagoon Nebula 55 basaltic rocks 55 Milky Way Galaxy 55 orbiting observatories 55 volcanic moon Io 55 gravitational waves 55 blackholes 55 HD #b [002] 55 Comet #P/Holmes 55 barred spiral galaxy 55 mineralogical composition 55 extraterrestrial civilizations 55 fainter objects 55 coronal mass ejections CMEs 55 atmospheric aerosols 55 quark gluon 55 stony meteorites 55 telescopic observations 55 SINFONI 55 dwarf spheroidal galaxies 55 Peony nebula star 55 Bose Einstein 55 Extrasolar Planet Search 55 gravitational microlensing 55 radial velocity technique 55 muon 55 sunlike star 55 Muons 55 Solar Dynamics Observatory 55 Halley comet 55 Pluto Eris 55 moonlets 55 planet Gliese #c 55 planets orbiting sun 55 NASA WMAP 55 NASA Voyager spacecraft 55 filamentary structures 55 arcminutes 55 ultraviolet wavelengths 55 microlensing events 55 particle physics experiments 55 AMSR E 55 cosmological 55 lunar highlands 55 X ray observatories 55 accretion disk 55 coronal heating 55 cosmic rays 55 Lunar Prospector 55 redshift z = 55 submillimetre wavelengths 55 Relativistic 55 exosolar planets 55 gibbous 55 Seyfert galaxies 55 masers 55 gamma ray burst 55 neutrino detectors 55 supernova explosions 55 asteroids comets 55 Io Europa 55 Saturn outermost ring 55 BLG #Lb 55 Mars Phobos 55 Omega Nebula 55 cosmic neutrinos 55 star Spica 55 Tharsis Rise 55 Antarctic Dry Valleys 55 supermassive 55 spiral galaxy NGC 55 hadron 55 magnetospheres 55 NASA QuikScat satellite 55 Bose Einstein condensation 55 baryonic 55 rotating neutron stars 55 gravitational lensing 55 proto cluster 55 cometary dust 55 mineral olivine 55 TNOs 55 Big Bang cosmology 55 protostars 55 ejecta 55 heavily cratered 55 constellation Hercules 55 cosmological models 55 meteoritic material 55 Charon Pluto 55 Sara Seager 55 magnetic reconnection 55 electrons protons 55 infrared telescopes 55 Aqua satellite 55 tau neutrino 55 ionospheric 55 foreground galaxy 55 polar stratospheric 55 polaritons 55 SUSY 55 Perseus Cluster 55 Keck Interferometer 55 starburst galaxies 55 Caloris Basin 55 galactic clusters 55 antineutrino 55 Kuiper belt object 55 OGLE TR #b 55 Bullet Cluster 55 XMM Newton satellite 55 Oscillations 55 Magnetospheric 55 neutrino mass 55 WISE telescope 55 planetary nebula 55 waning gibbous 55 post perovskite 55 circumstellar dust 55 neutral mass spectrometer 55 Einstein theories 55 astronomical objects 55 journal Icarus 55 Brownian motion 55 Wolf Rayet stars 55 innermost planet 55 visible wavelengths 55 supernova explosion 55 Descent Imager Spectral Radiometer 55 Project Ozma 55 ultracold atoms 55 constellation Cassiopeia 55 Aram Chaos 55 NASA twin STEREO 55 ultracold 55 detect neutrinos 55 cometary material 55 journal Meteoritics 55 globulars 55 baryon 55 supergiant star 55 substorm 55 spectroscopic 55 Cassini radar 55 polar caps 55 Uranus Neptune 55 redshift 55 IceCube telescope 55 novas 55 emit X rays 55 Mars Orbiter 55 Gal Yam 55 planetary astronomer 55 superfluids 55 SOHO spacecraft 55 reionization epoch 55 Comet 9P/Tempel 1 55 WFC3 55 KBOs 55 BP Psc 54 Comet Machholz 54 Jupiter magnetosphere 54 volcanic aerosols 54 spectroscopic analysis 54 helium atoms 54 extrasolar planetary 54 gravitational lenses 54 Thermal Emission Spectrometer 54 Butterfly Nebula 54 nebulosity 54 Pleiades cluster 54 gravitationally lensed 54 proton antiproton 54 Super Kamiokande 54 Jovian moon 54 Halzen 54 twin STEREO spacecraft 54 sunspot cycles 54 infrared spectrometers 54 STEREO spacecraft 54 cosmos 54 silicate mantle 54 Quaoar 54 Climate Experiment GRACE 54 Milankovitch 54 Cabeus crater 54 kaons 54 IRAS 4B 54 active galactic nucleus 54 planetary atmospheres 54 quantum chromodynamics 54 slender crescent 54 sterile neutrinos 54 constellation Centaurus 54 Comet Elenin 54 soliton 54 waxing crescent 54 Particle physics 54 flood basalts 54 sonoluminescence 54 Saturn moons 54 constellation Scorpius 54 upper troposphere 54 spectrographs 54 Type Ia 54 thin crescent 54 Manned missions 54 Svedhem 54 radioactive decay 54 Mercury flyby 54 Planck 54 tau neutrinos 54 Cassini Huygens 54 earthlike planets 54 magnetosphere 54 relativistic particles 54 Nima Arkani Hamed 54 multi decadal 54 Goldilocks planet 54 coronal magnetic field 54 carbonaceous chondrites 54 Saturn auroras 54 Rossby waves 54 submillimeter wavelengths 54 NASA Cassini 54 Mate Adamkovics 54 chondritic meteorites 54 HIP #b 54 Huygens mission 54 Cygnus X 54 Gamma rays 54 proton decay 54 relativity theory 54 Bill Borucki Kepler 54 optical wavelengths 54 weak gravitational lensing 54 NuSTAR 54 BP Piscium 54 Hubble orbits 54 redshifts 54 galactic bulge 54 protoplanetary discs 54 HD# [002] 54 backscattering 54 Extrasolar planets 54 hydroxyl molecules 54 cometary debris 54 quark gluon plasma 54 planet Nibiru 54 Astrophysicists 54 X ray emitting 54 galaxy clusters 54 Candor Chasma 54 comets meteors 54 Mandushev 54 moon Phobos 54 Horsehead Nebula 54 Earth magnetosphere 54 outermost planet 54 Hadean 54 cosmological theories 54 pulsar 54 WISE infrared 54 Gliese #g 54 albedo reflectivity 54 NASA Stardust spacecraft 54 infrared spectral 54 planetesimals 54 sun corona 54 multiband imaging photometer 54 geoid 54 antiquarks 54 sparticles 54 Saturn innermost 54 Mars CRISM 54 neutrino physics 54 TrES 54 Werthimer 54 GLAST telescope 54 #P/Churyumov-Gerasimenko 54 Raman Effect 54 Antennae Galaxies 54 Shoemaker Levy 54 Kepler Mission 54 KamLAND 54 Relations Observatory STEREO 54 comet Wild 54 Gamma ray 54 blazar 54 imaging spectrometer 54 cosmic 54 aboard ESA Envisat 54 NASA ICESat 54 lunar magma 54 GOSAT 54 moon Deimos 54 WISE spacecraft 54 planet WASP #b 54 Doppler shifts 54 antimatter particles 54 QQ# 54 submillimeter galaxies 54 infrared spectrograph 54 atmospheric phenomena 54 Jupiter Uranus 54 moon Mab 54 Supersymmetry 54 Elenin 54 Alfvén waves 54 radiotelescope 54 Voorwerp 54 Fornax cluster 54 tholins 54 supernovae explosions 54 Mojzsis 54 Infrared Astronomical Satellite IRAS 54 gravitational wave 54 ionosphere 54 Ordovician extinction 54 GRB# 54 interferometers 54 astrometry 54 wavefunction 54 Laser Interferometer Gravitational Wave 54 Anthony Remijan 54 Orion Nebula 54 Martian crater 54 THEMIS Image 54 distant galaxy 54 WHIM 54 IKAROS 54 solar prominences 54 GRB #A 54 Carina Nebula 54 infrared wavelength 54 supergiant stars 54 magnetic monopole 54 ESO PR 54 millimeter wavelengths 54 Saturn aurora 54 star Beta Pictoris 54 meridional flow 54 constellation Andromeda 54 Cosmological 54 Total Ozone Mapping 54 Ionosphere Sounding 54 Orion constellation 54 photometer 54 galactic nuclei 53 VIRTIS 53 interferometry 53 Dwarf galaxies 53 neutrino 53 Kelvin Helmholtz 53 Doppler measurements 53 GQ Lupi 53 NGC# 53 Hyakutake 53 Muchachos Observatory 53 astronomical observations 53 red supergiant 53 galaxy NGC 53 Jupiter Ganymede 53 NASA Chandra 53 exoplanetary systems 53 Nernst 53 hypernova 53 Reiner Gamma 53 frequency combs 53 infrared wavelengths 53 CMB photons 53 Hubble Constant 53 absorption spectra 53 D CIXS 53 supernovae explode 53 Orionids 53 Gliese #e 53 hydrosphere 53 Martian polar 53 IBEX spacecraft 53 HARPS spectrograph attached 53 magnetotail 53 Rydberg atom 53 colliding galaxies 53 reentry capsule 53 Eta Carinae 53 comet Hale Bopp 53 superstring theory 53 active galactic nuclei 53 magnetic fields 53 constellation Ophiuchus 53 Quadrantid 53 baryons 53 Earths orbiting 53 Coma cluster 53 Solar System 53 interstellar particles 53 highly elliptical orbits 53 permanently shadowed 53 infalling gas 53 Saturn moon 53 Herschel telescope 53 baryonic matter 53 maser 53 GZK cutoff 53 radar interferometry 53 Viking landers 53 binary quasar 53 Andromeda halo 53 Mars Squyres 53 NASA LCROSS 53 Planetary Camera 2 53 Cancri 53 evaporite deposits 53 particle detectors 53 Astrophysics Cambridge Mass. 53 midlatitudes 53 elongated orbits 53 Observatory STEREO 53 cosmic collisions 53 ESA ERS 53 Cassini ion 53 Don Gurnett 53 ARPES 53 infrared spectra 53 Imaging Spectrometer 53 Brookhaven Relativistic Heavy 53 ADM Aeolus 53 Martian dunes 53 Shackleton crater