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(Click for frequent words.) 71 Virgo cluster 71 Coma Cluster 71 Fornax cluster 71 galaxy cluster 70 distant galaxy 70 galaxy NGC 70 constellation Carina 69 foreground galaxy 69 spiral galaxy NGC 69 constellation Ursa Major 69 constellation Hercules 69 Andromeda galaxy 69 distant quasar 68 elliptical galaxy 68 galaxy M# [002] 68 Triangulum Galaxy 67 constellation Sagittarius 67 constellation Centaurus 67 Perseus Cluster 67 active galactic nuclei 67 Milky Way halo 67 supergiant star 66 starburst galaxy 66 Andromeda Galaxy 66 constellation Cassiopeia 66 Milky Way Galaxy 66 gaseous planet 66 cosmic cannibal 65 constellation Coma Berenices 65 constellation Vulpecula 65 constellation Andromeda 65 Omega Centauri 65 starburst galaxies 65 MG J# +# 65 Fomalhaut b 65 Small Magellanic Cloud 65 constellation Virgo 65 constellation Aquarius 65 constellation Eridanus 65 Antennae Galaxies 65 filamentary structure 65 elliptical galaxy NGC 65 sunlike stars 64 star Proxima Centauri 64 AGNs 64 galaxy M# [001] 64 Syrtis Major 64 globular cluster 64 supernova remnant 64 barred spiral galaxy 64 constellation Scorpius 64 distant galaxies 64 HD#b 64 Fermi telescope 64 Beta Pictoris 64 Kuiper belt 64 accretion disk 64 galactic disk 64 interacting galaxies 64 lensing galaxy 64 AU Mic 64 distant quasars 64 globular star 64 Geminga 64 fainter objects 64 CoRoT #b 64 active galactic nucleus 63 globulars 63 Kuiper belt objects 63 arcminutes 63 X ray emission 63 dwarf galaxy 63 quasar 63 TrES 4 63 Mpc 63 Lagoon Nebula 63 Epsilon Eridani 63 circumstellar disks 63 infall 63 constellation Cetus 63 moon Io 63 X ray pulses 63 Oort Cloud 63 Upsilon Andromedae 63 merging galaxies 63 constellation Pegasus 63 GJ #b [001] 62 RS Ophiuchi 62 Carina Nebula 62 red supergiant 62 planetary nebulae 62 HIRES spectrometer 62 constellation Aries 62 star Beta Pictoris 62 distant supernovae 62 GJ #b [002] 62 cosmological distances 62 emission nebula 62 ray Space Telescope 62 Ring Nebula 62 sunlike star 62 Coma cluster 62 circumstellar disk 62 eclipsing binary 62 UDFy # 62 HD #b [002] 62 intrinsic brightness 62 star Fomalhaut 62 Milky Way galaxy 62 Orion nebula 62 Pinwheel Galaxy 62 constellation Puppis 62 Orion Nebula 62 X ray wavelengths 62 Trifid Nebula 62 galaxy redshift 62 protoplanet 61 volcanic moon Io 61 constellation Cygnus 61 Voorwerp 61 blazars 61 luminous galaxies 61 Carina constellation 61 giant elliptical galaxy 61 SN #A 61 constellation Lyra 61 Bug Nebula 61 Sagittarius B2 61 exoplanets orbiting 61 Oort cloud 61 relativistic jets 61 GRB #B 61 Stephan Quintet 61 Dumbbell Nebula 61 quasars 61 Triangulum 61 Large Magellanic Cloud 61 galactic clusters 61 GQ Lupi 61 GJ#b 61 circumstellar 61 GALEX 61 magnetar 61 observable universe 61 zodiacal light 61 gravitationally bound 61 southern constellation Carina 61 extrasolar 61 IRAS #-# 61 planets Uranus 61 gravitationally lensed 61 Hanny Voorwerp 61 Bullet Cluster 61 Rosette Nebula 61 planetary nebula 61 celestial object 61 galaxies 61 Veil Nebula 61 distant supernovas 61 Helix Nebula 61 orbits Saturn 61 SDSS II 60 brightest supernova 60 Epsilon Aurigae 60 Henize #-# 60 galaxy clusters 60 AB Aurigae 60 supermassive black hole 60 proto cluster 60 transiting planet 60 Arabia Terra 60 smallest exoplanet 60 spiral galaxy 60 supernova explosion 60 supernova remnants 60 exoplanetary 60 Saturnian moon 60 Tarantula Nebula 60 backscattered 60 visible wavelengths 60 magnetars 60 protostar 60 reionization 60 constellation Taurus 60 planet HD #b 60 Saturnian system 60 Cygnus Lyra region 60 gamma ray burst 60 Eagle Nebula 60 Proxima Centauri 60 Samuel Oschin Telescope 60 Candor Chasma 60 NGC# 60 submillimetre 60 Red Rectangle 60 redshifted 60 gamma ray emission 60 ESO VLT 60 Comet Holmes 60 red supergiants 60 constellation Monoceros 60 galactic bulge 60 moon Mimas 60 redshift 60 planet Uranus 60 distant galaxy clusters 60 blazar 60 reflection nebula 60 mu Arae 60 Gravitational waves 60 comet nucleus 60 gamma ray observatory 60 supernova SN 60 celestial sphere 60 constellation Ara 60 HD# [002] 60 nebular 60 extrasolar planetary systems 60 Andromeda Galaxy M# 60 Arches Cluster 60 star Spica 60 planets orbits 60 gravitational lens 60 tholins 60 airglow 60 Trifid 60 P/# A2 60 extragalactic 60 ULIRGs 60 SN #gy 60 optical wavelengths 60 rotating neutron stars 59 Gravitational lensing 59 constellation Libra 59 galactic halo 59 ionized hydrogen 59 constellation Auriga 59 trans Neptunian objects 59 interstellar clouds 59 PSR B# +# 59 Galaxy Evolution 59 interstellar cloud 59 aurorae 59 redshifts 59 Corot 7b 59 proplyds 59 Beta Pictoris b 59 Caloris 59 Puppis 59 supernovae explode 59 neutralinos 59 Comet Hartley 59 oppositely directed 59 PKS #-# 59 accretion disks 59 XMM Newton 59 planets asteroids 59 Comet Hartley 2 59 jovian 59 Saturn magnetosphere 59 protoplanetary 59 X ray binary 59 star Gliese 59 dynamical evolution 59 energetic electrons 59 nebula 59 moon Enceladus 59 exo planets 59 ejecta 59 Eta Carinae 59 Jupiter moon Io 59 Cancri 59 spiral galaxies 59 Fomalhaut 59 astrophysical objects 59 moonlet 59 infrared wavelengths 59 comet Lulin 59 cluster NGC 59 constellation Serpens 59 Milky Way 59 giant elliptical galaxies 59 WASP #b 59 ecliptic plane 59 GRBs 59 submillimetre wavelengths 59 Venusian atmosphere 59 moons orbiting 59 faint galaxies 59 exoplanets planets 59 GRB # 59 zodiacal dust 59 TrES 59 electron orbits 59 magnetopause 59 VY Canis Majoris 59 dwarf spheroidal galaxies 59 ionized particles 59 ultraluminous galaxy 59 Tarantula nebula 59 gamma ray flares 59 Saturnian moons 58 double helix nebula 58 moon Ganymede 58 Upsilon Andromedae b 58 X ray Observatory 58 planets comets 58 Gamma ray bursts 58 photosphere 58 ESO telescope 58 Helix nebula 58 axions 58 gravity warps 58 constellation Pisces 58 V# Mon 58 Neutron stars 58 Keck Interferometer 58 blue supergiant 58 Monoceros 58 elongated orbits 58 Cosmic Microwave Background 58 Active Galactic Nuclei 58 microquasar 58 galaxies collide 58 heliopause 58 protoplanetary disk 58 gravitational lenses 58 Lyman alpha 58 Pleiades cluster 58 G#.# +#.# 58 Evolution Explorer 58 spherical halo 58 HUDF 58 constellation Cepheus 58 dust enshrouded 58 KBOs 58 earthlike planets 58 galaxy 58 retrograde orbit 58 icy moons 58 comets orbiting 58 silicate dust 58 CoRoT 7b 58 ESO PR 58 collisional 58 SMBH 58 protoplanetary disks 58 Cepheid variables 58 CDMS experiment 58 Galilean moons 58 Betelgeuse 58 solar corona 58 Pinwheel galaxy 58 supermassive 58 constellation Perseus 58 relativistic protons 58 baryonic 58 J# +# [002] 58 constellation Hydra 58 spiral galaxy M# 58 planet orbits 58 interstellar dust 58 planet orbiting 58 galaxy NGC# 58 Zeta Ophiuchi 58 slender crescent 58 moonlets 58 lightwaves 58 Crab Pulsar 58 Seyfert galaxies 58 nebulosity 58 proto galaxies 58 SN #C 58 detect gamma rays 58 Pluto Charon 58 polarimetry 58 gravitational interactions 58 absorbs photons 58 heavily cratered 58 constellation Leo 58 rotational axis 58 elliptical galaxies 58 arcsecond 58 stellar nurseries 58 Comet 9P/Tempel 1 58 ringed planet 58 dense clumps 58 Trojan asteroids 58 HL Tau 57 Bok globules 57 submillimeter 57 Kuiper Belt object 57 Paranal Chile 57 circumstellar dust 57 KH #D 57 filamentary structures 57 X ray observatories 57 infalling 57 Comet Tempel Tuttle 57 occulted 57 Mimas 57 permanently shadowed craters 57 RS Oph 57 spiral galaxy Messier 57 Magellanic Clouds 57 Valles Marineris 57 cometary material 57 type Ia supernovae 57 gravitational microlensing 57 unpolarized 57 #P/Churyumov-Gerasimenko 57 magnetospheric 57 mesosphere 57 VHE gamma rays 57 constellation Ophiuchus 57 retrograde orbits 57 VIRTIS 57 antineutrinos 57 supersymmetric particles 57 galactic cores 57 moons Phobos 57 Mauna Kea Hawaii 57 Churyumov Gerasimenko 57 Earth magnetosphere 57 innermost planet 57 X ray emitting 57 ejecta blanket 57 energetic gamma rays 57 BLG #Lb 57 hexagonal mirrors 57 Kuiper Belt Objects 57 arcseconds 57 VLTI 57 gravitational interaction 57 inner asteroid belt 57 Crab Nebula 57 Cygnus X 57 outer corona 57 coronagraph 57 filamentary 57 micron wavelengths 57 RX J# 57 relativistic particles 57 spectroscopic observations 57 planemos 57 submillimeter galaxies 57 Astrophysical 57 basaltic rocks 57 Earthlike planets 57 Muchachos Observatory 57 Type Ia supernovas 57 spectral fingerprint 57 Valles Marineris canyon 57 Earthlike planet 57 Orion constellation 57 weak gravitational lensing 57 Type Ia supernova 57 supernova explosions 57 optical telescopes 57 HiRISE image 57 Cat Paw Nebula 57 Anisotropy Probe 57 interstellar dust clouds 57 constellation Bootes 57 Olympus Mons 57 Io Europa 57 galactic mergers 57 emit X rays 57 interstellar boundary 57 type Ia supernova 57 SINFONI 57 stellar occultations 57 Comet Hale Bopp 57 Hubble observations 57 planet WASP #b 57 Hot Jupiters 57 CoRoT 9b 57 X ray telescopes 57 antiparticle 57 colliding galaxies 57 substorm 57 sized planets orbiting 57 Cerro Paranal 57 occultations 57 GeV 57 earthshine 57 Gliese #c 57 neutron star 56 astronomical objects 56 Sagittarius dwarf galaxy 56 planet Gliese #g 56 Reiner Gamma 56 SN#A 56 Area Telescope LAT 56 ecliptic 56 planets orbiting stars 56 Cepheids 56 WMAP satellite 56 gravitational lensing 56 asterism 56 Wolf Rayet stars 56 spacecraft flyby 56 millisecond pulsar 56 ESA XMM Newton 56 NASA Wilkinson Microwave 56 HAT P 56 inhabitable planets 56 HARPS spectrograph attached 56 binary quasar 56 Perseus constellation 56 magnetotail 56 Convection Rotation 56 sun corona 56 gravitational radiation 56 superclusters 56 Quaoar 56 J#.# [001] 56 Arsia Mons 56 Magnetars 56 Optical Gravitational Lensing Experiment 56 Cosmic Evolution 56 supermassive black holes 56 shorter wavelengths 56 Venusian surface 56 weakly interacting 56 neutral mass spectrometer 56 Type 1a supernovae 56 dwarf galaxies 56 Galilean satellites 56 protons collide 56 Saturn outermost 56 rocky planets 56 Eridanus 56 Gliese #e 56 RHESSI 56 Saturn moon Enceladus 56 LOFAR 56 electron neutrinos 56 RY Sagittarii 56 X ray afterglow 56 optical spectra 56 globular clusters 56 electrons orbiting 56 transiting exoplanets 56 comet Tempel Tuttle 56 baryon acoustic oscillations 56 constellation Fornax 56 ionised gas 56 infrared telescopes 56 NASA Cassini spacecraft 56 unaided eye 56 mineralogical composition 56 orbiting Saturn 56 GRB# 56 SEGUE 56 galactic equator 56 Spectrograph 56 gamma rays emitted 56 globular cluster M# 56 constellation Aquila 56 solar nebula 56 lunar equator 56 Hellas Basin 56 Galileo spacecraft 56 Deep Impact craft 56 Doradus 56 masers 56 constellation Draco 56 Circinus 56 moon Charon 56 helium ions 56 NGC #A 56 cosmic microwave radiation 56 Orionid 56 Alycia Weinberger 56 planets moons 56 particle acceleration 55 intracluster 55 Cassini Huygens 55 Very Large Telescope 55 noctilucent clouds 55 Exoplanets 55 magnetosphere 55 exosphere 55 Comet Elenin 55 coronal mass ejections CMEs 55 Infrared Thermal Imaging Spectrometer 55 constellation Orion 55 Pleiades star 55 icy moon Enceladus 55 particle detectors 55 ionized gas 55 supergiant stars 55 protoplanets 55 Planck satellite 55 Wilkinson Microwave Probe 55 spectroscopically 55 Jupiter magnetosphere 55 Phoebe orbits 55 Rydberg atom 55 galactic cosmic rays 55 exo planet 55 comet McNaught 55 millimeter wavelength 55 constellations Cygnus 55 Comet Lulin 55 Cherenkov radiation 55 Earth radii 55 Cosmic Microwave Background CMB 55 SN #D 55 faintest galaxies 55 Gamma ray burst 55 HARPS instrument 55 afterglows 55 Kepler #b 55 Comet Halley 55 Cancri e 55 Earth ionosphere 55 hypervelocity stars 55 equatorial bulge 55 cosmic ray particles 55 gaseous planets 55 Terra Sirenum 55 Higgs bosons 55 Corot 9b 55 auroral displays 55 Supernova #A 55 Serpens Cauda 55 NASA Voyager spacecraft 55 Fermi Gamma ray 55 DEEP2 55 transiting planets 55 interstellar dust particles 55 spinning neutron 55 supercluster 55 PSR J# +# 55 orbited Jupiter 55 diffuse aurora 55 Capricornus 55 Galactic Plane 55 dwarf spheroidal 55 coronal loops 55 fissure eruption 55 cosmic magnifying glass 55 lunar meteorites 55 Explorer WISE 55 Enceladus 55 gravitational tides 55 thin crescent 55 neutron stars 55 Type Ia supernovae 55 Astronomical Units 55 Gamma rays 55 pulsar 55 radial velocity technique 55 Adam Riess 55 submillimeter wavelengths 55 Galactic cosmic rays 55 Eridani 55 planets orbiting sun 55 asteroidal 55 La Silla Chile 55 helium atoms 55 interstellar medium 55 NASA MESSENGER spacecraft 55 supernovae 55 planets circling 55 Cerenkov radiation 55 Corona Australis 55 moon Phobos 55 constellation Gemini 55 eccentric orbits 55 brown dwarf 55 millisecond pulsars 55 auroral 55 galaxy supermassive black 55 PSR J# 55 undiscovered particle 55 planetary embryos 55 #gy 55 X ray binaries 55 Peony nebula star 55 sterile neutrino 55 arcsec 55 torus 55 neighboring Andromeda galaxy 55 magnetic monopoles 55 cosmic collisions 55 CMB radiation 55 planetary Transits 55 brightnesses 55 DEM L# 54 protostars 54 redshift z = 54 faint smudge 54 galactic 54 muon neutrinos 54 faraway galaxies 54 gravitational wave 54 amateur astronomers peering 54 silicon monoxide 54 zodiac constellations 54 cosmic phenomena 54 extrasolar planet 54 Elenin 54 galaxy formation 54 Trapezium 54 Schwarzschild radius 54 Ultraviolet Imaging Spectrograph UVIS 54 particle smasher 54 Chilean Atacama Desert 54 kpc 54 Anisotropy Probe WMAP 54 PSR B# 54 Io volcanoes 54 Gondolo 54 Keck telescope 54 Asteroid Belt 54 exoplanet orbiting 54 Ranging spacecraft 54 periodic dimming 54 galactic nucleus 54 lowermost mantle 54 ESO Very Large Telescope 54 starlike object 54 Gamma ray 54 Fermi LAT 54 detect gravitational waves 54 lunar crust 54 cosmic microwave background 54 NEAs 54 electron diffraction 54 electrons protons 54 WM Keck Observatory 54 astrophysical 54 Hubble Ultra 54 planetary nebulas 54 spinning neutron stars 54 OGLE TR #b 54 electromagnetic flux 54 Cassini flyby 54 Ius Chasma 54 Toutatis 54 spherically symmetric 54 sodium atoms 54 planet magnetosphere 54 muon neutrino 54 brown dwarfs 54 Horsehead Nebula 54 comet tail 54 nebulae 54 WIMPs 54 muon 54 Field Imager 54 spectroscopic measurements 54 z ~ 54 radial velocity 54 Spitzer infrared 54 superdense 54 gravitational waves 54 VISTA telescope 54 Mandushev 54 Jupiter Ganymede 54 Oceanus Procellarum 54 Dwarf galaxies 54 heliospheric 54 Solar TErrestrial RElations Observatory 54 Martian crater 54 Saturn auroras 54 helium nuclei 54 astronomers 54 Exoplanet 54 GEO# 54 Chandra Observatory 54 NASA Chandra 54 Saturn Enceladus 54 Jovian moons 54 Planck telescope 54 Ulysses spacecraft 54 Heliospheric Observatory SOHO 54 interstellar dust grains 54 Herschel telescope 54 cosmic ray collisions 54 magnetic reconnection 54 spacetime 54 cometary debris 54 gibbous 54 comet Wild 54 infrared spectral 54 neutralino 54 comets asteroids 54 ultraviolet wavelengths 54 HESS telescopes 54 Paranal Observatory 54 Comet #P 54 XTE J# 54 Methone 54 superposed 54 QQ# 54 moons circling 54 millimeter wavelengths 54 rotating neutron 54 moon Mab 54 Kuiper Belt objects 54 gamma rays 54 Spitzer infrared spectrograph 54 COROT 7b 54 starbursts 54 Butterfly Nebula 54 baryonic matter 54 galactic nuclei 54 planet Gliese #c 54 luminosities 54 nebula NGC 54 exoplanetary systems 54 pentacene molecule 54 heliosheath 54 EPOXI spacecraft 54 subsurface ocean 54 microlensing 54 waxing crescent moon 54 SNe Ia 54 Planitia 54 lunar craters 54 TNOs 54 asteroid Vesta 54 diffraction pattern 54 neutrino beam 54 imaging spectrometer 54 Hubble Constant 54 Shackleton crater 54 interferometry 54 perihelion 54 Gliese #d 54 Epsilon Indi 54 Extrasolar planets 54 ESA Integral 54 spiral nebulae 54 Saturn aurora 54 supergiant 54 hadrons 54 meteoroids 53 HII regions 53 CoRoT satellite 53 Bonneville Crater 53 spectral fingerprints 53 Wolf Rayet star 53 Relations Observatory STEREO 53 solar radii 53 planets orbiting 53 asteroids orbiting 53 Compact Reconnaissance Imaging Spectrometer 53 impactor spacecraft 53 Sombrero Galaxy 53 YORP effect 53 interferometric 53 outermost planets 53 planets orbiting distant 53 XO 3b 53 dipole moment 53 moon Titan 53 elliptical orbits 53 geoneutrinos 53 Supernovae 53 galaxy Andromeda 53 SNR #-#.# 53 Terra Meridiani 53 Orionids 53 chemical abundances 53 habitable planets 53 diffracted 53 Ontario Lacus 53 particles WIMPs 53 gamma ray bursts 53 starlike 53 van Arkel discovery 53 Magellanic Stream 53 smoggy atmosphere 53 orbital resonance 53 galactic collisions 53 permanently shadowed 53 x ray beam 53 parsecs 53 Astrophysics Cambridge Mass. 53 COROT 53 gravitationally 53 linearly polarized 53 Wilkinson Microwave Anisotropy Probe 53 Microlensing 53 Infrared Array Camera 53 stellar occultation 53 reddish glow 53 planetary magnetospheres 53 Cassini ion 53 WHIM 53 Very Large Array 53 Spitzer Space Telescope 53 Anthony Remijan 53 Omega Nebula 53 evanescent waves 53 photons particles 53 multiband imaging photometer 53 infrared spectra 53 Caloris Basin 53 ENAs 53 fading afterglow 53 Kepler 9c 53 comet Churyumov Gerasimenko 53 microlensing events 53 proto planetary disk 53 ultraviolet imaging spectrograph 53 NASA Far Ultraviolet 53 chromosphere 53 SMBHs 53 Jovian moon 53 Comet Encke 53 Cosmologists 53 attosecond 53 Descent Imager Spectral Radiometer 53 Mini Thermal Emission 53 APEX telescope 53 Encke gap 53 Earthlike 53 Nasa spacecraft 53 auroral emissions 53 Europa Ganymede 53 tau neutrinos 53 telescope atop Mauna 53 superstrings 53 MPG ESO 53 Canes Venatici 53 inch Samuel Oschin 53 hypernova 53 anthracene 53 Beehive Cluster 53 exoplanet 53 elongated orbit 53 Jonathan Lunine 53 Sedna 53 interferogram 53 radial velocity method 53 HD #b [001] 53 volcanically active 53 polar mesospheric clouds 53 Nili Fossae 53 Composite Infrared Spectrometer 53 NASA Stardust spacecraft 53 supernova 53 TW Hydrae 53 neutrino mass 53 Saturn moon Mimas 53 ATLAS detector 53 exoplanets 53 Kraken Mare 53 Mars moon Phobos 53 Fermi Telescope 53 glowing brightly 53 parsec 53 Comet NEAT 53 ah dus 53 Manchester Jodrell Bank 53 outer planets 53 Astrophysicists 53 Borealis basin 53 WISE infrared 53 aphelion 53 diffraction patterns 53 Great Orion Nebula 53 particle analyzers 53 Mars Orbiter Camera 53 spheroidal 53 Isidis Planitia 53 icy comets 53 discover Fomalhaut 53 z = 53 photoemission 53 infrared ultraviolet 53 Bose Einstein Condensate 53 gravitational attraction 53 Astrological lore 53 photoelectron 53 nucleosynthesis 53 interstellar particles 53 emits X rays 53 synchrotron x ray 53 accreting 53 Alfven waves 53 Kuiper belt object 53 cinder cones 53 infrared wavelength 53 Roque de los 53 Ranging MESSENGER spacecraft 53 largest moon Charon 53 HiRISE camera 53 exerts gravitational pull 53 nebulas 53 Multi Object Spectrograph 53 Interstellar Boundary Explorer 53 Delta Aquarids