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(Click for frequent words.) 65 Fomalhaut b 64 gaseous planet 64 protoplanetary 64 Upsilon Andromedae b 63 Oort cloud 63 moon Mab 63 moon Ganymede 63 Zeta Ophiuchi 62 asteroid Vesta 62 moons orbiting 62 planet HD #b 62 globulars 62 interstellar dust particles 62 Pluto Charon 61 comets orbiting 61 TrES 4 61 planets orbits 61 Kuiper belt objects 61 KBOs 61 Upsilon Andromedae 61 BLG #Lb 60 whiz harmlessly 60 Galilean satellites 60 moonlets 60 planets orbiting sun 60 Neptunian 60 Kuiper Belt objects 60 asteroids 60 Cygnus Lyra region 60 Kuiper Belt object 60 sunlike star 60 CoRoT #b 60 Kuiper Belt Objects 60 sunlike stars 59 protoplanets 59 planets Uranus 59 galaxy M# [002] 59 volcanic moon Io 59 Samuel Oschin Telescope 59 protoplanet 59 Epsilon Eridani 59 Trojan asteroids 59 exoplanets orbiting 59 Kuiper belt object 59 moon Io 58 extrasolar 58 Galilean moons 58 gravitationally bound 58 Oort Cloud 58 trans Neptunian objects 58 transiting planets 58 sized planets orbiting 58 GJ#b 58 WASP #b 58 MG J# +# 58 Pluto Eris 58 super Earths 58 Earthlike planets 58 galactic clusters 58 orbits Saturn 57 moon Phobos 57 icy moons 57 super perigee moon 57 extrasolar planets orbiting 57 planetary embryos 57 Cancri e 57 planet orbits 57 Corot 7b 57 WMAP satellite 57 asteroid belt 57 Astronomical Units 57 IRAS #-# 57 lunar crust 57 Beta Pictoris 57 moons Phobos 57 Comet #P/Churyumov-Gerasimenko 57 X ray binary 57 smallest exoplanet 57 cosmic cannibal 57 Kuiper belt 57 red supergiant 57 Neutron stars 57 Uranus Neptune 57 exo planets 57 constellation Carina 57 cluster NGC 57 exoplanetary 57 elliptical galaxy 57 merging galaxies 57 inner asteroid belt 57 exo planet 57 Saturn Cassini 57 Wolf Rayet stars 57 planets comets 56 orbiting 56 Wilkinson Microwave Probe 56 galaxy NGC 56 VB #b 56 galaxy cluster 56 GQ Lupi 56 millisecond pulsar 56 Jupiter Ganymede 56 moons Europa 56 asteroids Vesta 56 AU Mic 56 planets orbiting 56 COROT 7b 56 icy comets 56 foreground galaxy 56 Globular clusters 56 HL Tau 56 THEMIS satellites 56 impactors 56 Kuiper Belt Object 56 Cancri 56 moon Charon 56 tidal bulge 56 particle detectors 56 #P/Churyumov-Gerasimenko 56 Kepler 9c 56 Franck Marchis 56 Makemake 56 Galileo spacecraft 56 Milky Way Galaxy 56 circumstellar disks 56 Fornax cluster 56 comet Churyumov Gerasimenko 56 meteoroid 56 Baptistina 56 Beta Pictoris b 56 circumstellar disk 56 asteroids comets 56 Coma Cluster 56 Fermi telescope 56 Proxima Centauri 56 planets orbiting stars 56 retrograde orbit 56 VY Canis Majoris 56 jovian 56 orbits 56 Andromeda galaxy 56 spacecraft flyby 55 Martian rovers 55 mu Arae 55 orbited Jupiter 55 constellation Ara 55 microlensing events 55 Kuiper Belt 55 distant quasar 55 Saturnian 55 galaxy M# [001] 55 thrilling stargazers 55 Perseus Cluster 55 Earth asteroids 55 Kepler #b 55 Magnetars 55 TNOs 55 inhabitable planets 55 LRO spacecraft 55 Earth radii 55 exoplanets planets 55 Solar TErrestrial RElations Observatory 55 Jovian moons 55 comets asteroids 55 constellation Hercules 55 Virgo cluster 55 lunar equator 55 Iapetus Saturn 55 spiral galaxy NGC 55 planets asteroids 55 Ulysses spacecraft 55 Syrtis Major 55 planetary Transits 55 Saturnian moons 55 HD#b 55 asteroid 55 Triangulum 55 Scientists theorized 55 NEAs 55 interstellar cloud 55 Eridani 55 interplanetary spacecraft 55 Galaxy Evolution 55 planet orbiting 55 olivine crystals 55 galactic disk 55 millisecond pulsars 55 subsurface ocean 55 gaseous planets 55 Quadrantids 55 Mandushev 55 SN #gy 55 Comet Churyumov Gerasimenko 55 gamma ray observatory 55 telescopic observations 55 southern supercontinent 55 supergiant star 55 moons Io 55 GJ #b [002] 54 Corot 9b 54 Tharsis Rise 54 planetesimal 54 Nasa spacecraft 54 star Gliese 54 dense clumps 54 Saturn outermost ring 54 comet #P/Churyumov-Gerasimenko 54 moon Titan 54 circumstellar 54 telescope Uranus 54 planets orbiting distant 54 asteroids Ceres 54 Coma cluster 54 brightest supernova 54 sextillion stars 54 Titan Saturn 54 Heliospheric Observatory SOHO 54 Saturn outermost 54 planets moons 54 Churyumov Gerasimenko 54 particle detector 54 Chilean Atacama Desert 54 star Proxima Centauri 54 constellations Cygnus 54 Submillimeter Array 54 Anisotropy Probe 54 Herschel telescope 54 Bug Nebula 54 neighboring Andromeda galaxy 54 deep convective clouds 54 Quaoar 54 Ring Nebula 54 meteoritic material 54 rocky planets 54 neutrino telescope 54 lobate scarps 54 circular orbits 54 Saturn Enceladus 54 galaxy clusters 54 Herschel Space 54 impactor spacecraft 54 radial velocity technique 54 star Beta Pictoris 54 RS Ophiuchi 54 constellation Eridanus 54 Jupiter Uranus 54 proto cluster 54 Antennae Galaxies 54 Gerard Kuiper 54 proton antiproton collisions 54 super Earths orbiting 54 solar corona 54 Cassini flyby 54 constellation Andromeda 54 Geminga 54 planets 54 Mercury Uranus 54 planetesimals 54 ESA XMM Newton 54 Saturnian moon 54 Asteroid Belt 54 orbiting Saturn 54 interstellar dust samples 54 red supergiants 54 neutron spectrometer 54 elliptical galaxy NGC 54 exoplanet orbiting 54 AGNs 54 Konacki 54 constellation Centaurus 54 Hubble Space Telescope HST 54 planetary nebulae 54 gravitational microlensing 54 extragalactic 54 constellation Pegasus 54 Saturn rings 53 galaxy Andromeda 53 Tarantula nebula 53 Planetary Transits 53 Virgo Cluster 53 constellation Virgo 53 CoRoT satellite 53 Earth magnetosphere 53 moons 53 Jupiter moon Io 53 transiting exoplanet 53 chromosphere 53 binary asteroid 53 COROT exo 3b 53 periodic dimming 53 cometary debris 53 OGLE TR #b 53 transiting planet 53 QQ# 53 Diviner instrument 53 asteroidal 53 Elenin 53 PASADENA Calif. Astronomers 53 occultations 53 Uranus Jupiter 53 Comet Tempel Tuttle 53 infall 53 EPOXI spacecraft 53 supergiant stars 53 Saturn moons 53 dwarf galaxy 53 perigee moon 53 filamentary structures 53 electron neutrinos 53 Voyager probes 53 asteroid Steins 53 Hanny Voorwerp 53 Dumbbell Nebula 53 authors Anne Verbiscer 53 Carina constellation 53 carbonaceous chondrite 53 Saturn Jupiter Uranus 53 Comet NEAT 53 Comet Halley 53 orbiting Kepler telescope 53 TrES 53 VIRTIS instrument 53 protons collide 53 HAT P 53 galactic mergers 53 Higgs bosons 53 particle smasher 53 IBEX spacecraft 53 Chajnantor plateau 53 synchronous polar 53 Red Rectangle 53 sun corona 53 elliptical orbits 53 Quadrantid meteor shower 53 APXS 53 Bonneville Crater 53 moon Enceladus 53 Io Europa 53 PSR J# 53 Martian meteorites 53 Ranging spacecraft 53 X ray emitting 53 Small Magellanic Cloud 53 globular clusters 53 dynamical evolution 53 type Ia supernovae 53 Comet Holmes 53 Cometary 53 Saturn outermost moon 53 Milky Way galaxy 53 Cosmic Microwave Background 53 Svedhem 53 NASA Cassini 53 hexagonal mirrors 53 gravitational interactions 53 infrared telescopes 53 arcminutes 53 synchrotron x ray 53 permanently shadowed craters 53 George Djorgovski 53 hunting Kepler telescope 53 orbital eccentricity 53 Eta Carinae 53 Orion nebula 53 proplyds 53 moons circling 53 celestial object 53 Image NASA JPL 53 XTE J# 53 P Churyumov Gerasimenko 53 lunar crater 53 gravitational lenses 53 Shoemaker Levy 53 Sojourner rover 53 Martian crater 53 Hellas Basin 53 Type Ia supernovas 53 comet Tempel Tuttle 53 globular cluster 53 eccentric orbits 52 moon Deimos 52 binary asteroids 52 planemos 52 Muchachos Observatory 52 Caloris 52 X ray telescopes 52 nebular 52 Neptune Uranus 52 SIM PlanetQuest 52 abyssal plain 52 microlensing 52 outermost ring 52 Valles Marineris 52 Martian craters 52 Cat Paw Nebula 52 Omega Centauri 52 Anthony Remijan 52 planet Uranus 52 Saturnian system 52 Eridanus 52 volcanically active 52 Titan flyby 52 magnetosphere 52 Nasa Kepler 52 largest moon Charon 52 asteroid impacts 52 exosphere 52 constellation Aquarius 52 rotating neutron stars 52 Mars Pathfinder lander 52 Infrared Astronomical Satellite IRAS 52 GLAST telescope 52 AB Aurigae 52 constellation Ursa Major 52 PSR B# +# 52 teragrams 52 comet 52 Spitzer Space Telescope 52 inch Samuel Oschin 52 van Arkel discovery 52 supernova explosion 52 Gamma ray burst 52 planet magnetosphere 52 outermost planets 52 solar nebula 52 coronal loops 52 inch refractor telescope 52 Anne Verbiscer 52 Gliese #c 52 Cerro Paranal 52 constellation Cepheus 52 supernova remnant 52 Ordovician extinction 52 Saturn magnetosphere 52 constellation Lyra 52 RRATs 52 Extrasolar Planet Search 52 airbursts 52 dimming starlight 52 X ray binaries 52 Solar Orbiter 52 Valles Marineris canyon 52 BP Piscium 52 NFIRE satellite 52 zodiacal constellations 52 spacecraft Cassini 52 comets 52 Gliese #g 52 SDSS II 52 undersea volcanoes 52 Keck telescopes 52 Comet Hartley 2 52 interstellar dust grains 52 astronomers 52 BBs lodged 52 amateur astronomers peering 52 polarimetry 52 WISE spacecraft 52 moonlet 52 polar orbits 52 Ontario Lacus 52 observing satellites 52 gravitational interaction 52 Swift Tuttle 52 coronal mass ejections CMEs 52 dwarf galaxies 52 SN #D 52 copper impactor 52 interacting galaxies 52 Tarantula Nebula 52 RQ# 52 telescopes atop Mauna 52 constellation Cetus 52 magnetars 52 constellation Vulpecula 52 supermassive 52 inner Oort Cloud 52 giant elliptical galaxy 52 sea scorpions 52 Veil Nebula 52 Apophis asteroid 52 Orientale Basin 52 planetary nebula 52 Encke gap 52 comet nucleus 52 celestial sphere 52 Olympus Mons 52 distant quasars 52 Deep Impact craft 52 Trapezium 52 constellation Cygnus 52 Earthlike planet 52 planets circling stars 52 GRB #B 52 Gerhard Schwehm 52 Europa Ganymede 52 spacecraft orbited 52 NASA Far Ultraviolet 52 Comet Tempel 1 52 antimatter particles 52 extrasolar planetary 52 cometary material 52 Epsilon Aurigae 52 moons orbiting Saturn 52 Mars Jupiter Uranus 52 SOHO spacecraft 52 interferometric synthetic aperture radar 52 solar radii 52 GJ #b [001] 52 filamentary structure 52 Serpens Cauda 52 exosolar planets 52 NASA Gamma ray 52 habitable zones 51 spinning neutron stars 51 supercontinent 51 Shackleton crater 51 orbiting telescopes 51 elongated orbit 51 magnetospheric 51 HD# [002] 51 ultraviolet wavelengths 51 Jupiter magnetosphere 51 supernovae explode 51 smallest extrasolar planet 51 quasar 51 sunspot cluster 51 retroreflector 51 perihelion 51 terrestrial planets 51 eclipsing binaries 51 extrasolar planetary systems 51 planetoids 51 extrasolar worlds 51 gravitationally lensed 51 hydroxyl molecules 51 Climate Experiment GRACE 51 outer planets 51 Mars Neptune Uranus 51 Uninhabited Aerial Vehicle 51 NASA twin rovers 51 Carina Nebula 51 X ray observatory 51 radioactive nuclei 51 Planck satellite 51 NASA MESSENGER spacecraft 51 planet WASP #b 51 moon Mimas 51 exoplanet hunter 51 distant suns 51 basaltic rocks 51 distant supernovae 51 geo stationary orbit 51 LCROSS spacecraft 51 orbital resonance 51 Earth ionosphere 51 prebiotic molecules 51 SN #A 51 Comet #P 51 protoplanetary disk 51 planet Gliese #g 51 discover Fomalhaut 51 CoRoT 9b 51 ocean basins 51 elongated orbits 51 Pan STARRS 51 Keck telescope 51 orbiting gamma ray 51 BP Psc 51 tholins 51 Io Europa Ganymede 51 meteoroids 51 Pleiades cluster 51 distant galaxy clusters 51 Henize #-# 51 planetary transits 51 HD #b [002] 51 planet HD#b 51 electron positron 51 polar vortex 51 ecliptic plane 51 extrasolar planet 51 constellation Cassiopeia 51 luminous galaxies 51 absorbs photons 51 meter Keck telescopes 51 Fomalhaut 51 Triangulum Galaxy 51 TSN PZ camera 51 Venus Jupiter Uranus 51 Phoebe orbits 51 ultraviolet radiation emitted 51 rocky extrasolar planet 51 Wolf Rayet star 51 Charon Pluto 51 retrograde orbits 51 Rosette Nebula 51 carbonaceous chondrites 51 interplanetary dust 51 THEMIS spacecraft 51 supervolcanoes 51 gravitational tides 51 Giovanni Cassini 51 gluon 51 ray Space Telescope 51 twin STEREO spacecraft 51 Saturn moon Mimas 51 New Horizons spacecraft 51 airglow 51 lunar perigee 51 fossilized creatures 51 ultraluminous galaxy 51 Type Ia supernova 51 aperture telescope 51 P/# A2 51 barred spiral galaxy 51 distant galaxy 51 aboard Taurus XL 51 Andromeda Galaxy 51 micrometre sized 51 bedrock outcropping 51 Mars Uranus 51 transiting exoplanets 51 Io volcanoes 51 innermost planet 51 Large Magellanic Cloud 51 Helioseismic 51 cometary dust 51 optical telescopes 51 NASA Kepler spacecraft 51 cosmic microwave radiation 51 Keck Telescopes 51 extrasolar planets 51 HIRES spectrometer 51 SMBHs 51 Pan STARRS PS1 telescope 51 stellar nurseries 51 protostars 51 micro meteorites 51 outer corona 51 NASA THEMIS 51 Venus Neptune Uranus 51 satellites orbiting Earth 51 olivine mineral 51 dwarf spheroidal 51 reentry capsule 51 Extrasolar planets 51 HARPS spectrograph attached 51 active volcanism 51 nebula 51 Murchison meteorite 51 NASA STEREO 51 Cabeus crater 51 Planck observatory 51 protoplanetary disks 51 Planck telescope 51 Sagittarius B2 51 AUs 51 Infrared Array Camera 51 visit http:/saturn.jpl.nasa.gov 51 intracluster 51 observable universe 51 imaging spectrometer 51 ionized particles 51 J# +# [002] 51 Astronomers 51 star Fomalhaut 51 Crab pulsar 51 Convection Rotation 51 WISE telescope 51 galactic cosmic ray 51 Explorer GALEX 51 Solar Dynamics Observatory 51 Kepler Space Telescope 51 Shiveluch 51 NASA Voyager spacecraft 51 GeV 51 silicate dust 50 Wassonite 50 Evolution Explorer 50 Stephan Quintet 50 highly elliptical orbit 50 Keck Telescope 50 Rosetta orbiter 50 chondritic 50 HD #b [001] 50 Cosmologists 50 Nili Fossae 50 COROT 50 dustier stormier atmosphere 50 particle analyzers 50 SIRTF 50 hematite mineral 50 Comet Lulin 50 phyllosilicate 50 nicknamed Xena 50 SMBH 50 Arsia Mons 50 muon neutrinos 50 detect gravitational waves 50 cinder cones 50 nightglow 50 Toba eruption 50 Tunguska Siberia 50 Ultraviolet Imaging Spectrograph UVIS 50 intrinsic brightness 50 Pieter van Dokkum 50 volcanic craters 50 Haumea 50 permanently shadowed lunar 50 Manned missions 50 stellar occultations 50 seafloor sediments 50 Helix Nebula 50 submillimetre 50 Astrological lore 50 ostracods 50 Thermal Emission Spectrometer 50 N. Rathnasree 50 emission nebula 50 BLG #L 50 located atop Mauna 50 Storrie Lombardi 50 Constellation Observing 50 substorms 50 colliding protons 50 gamma rays emitted 50 auroral emissions 50 ESO VLT 50 Jovian moon 50 Avishay Gal Yam 50 supernova explosions 50 RX J# 50 Orion Nebula 50 Deep Impact eXtended Investigation 50 Milky Way 50 hadron collider 50 Kounotori vehicle 50 Maunder minimum 50 mesosphere 50 Astrophysical Institute 50 lunar meteorites 50 Comet Encke 50 Tunguska asteroid 50 Type 1a supernovae 50 elliptical galaxies 50 Chazy Reef 50 heavily cratered 50 Pluto Kuiper Belt 50 orbiting observatories 50 constellation Auriga 50 Venusian atmosphere 50 Shatsky Rise 50 Galactic cosmic rays 50 galactic cores 50 galaxy redshift 50 constellation Hydra 50 highly elliptical orbits 50 diffuse aurora 50 lensing galaxy 50 proto galaxies 50 Super Earths 50 cometary 50 silicon monoxide 50 Yinghuo 1 50 distant galaxies 50 Mars moon Phobos 50 Lagoon Nebula 50 found circling Gliese 50 Jupiter moons 50 constellation Lacerta 50 meteor impacts 50 closest flyby 50 Comet 9P/Tempel 1 50 comet Wild 50 heliospheric 50 Wolszczan 50 moon permanently shadowed 50 Nikku Madhusudhan 50 NASA Landsat 50 orbit GEO 50 Pleiades star 50 Pluto dwarf 50 constellation Pisces 50 micrometeoroids 50 moon gravitational pull 50 optical telescope 50 Doradus 50 Maciej Konacki 50 permanently shadowed 50 Comet Hale Bopp 50 spiral galaxy Messier 50 Sagittarius dwarf galaxy 50 neutralinos 50 cosmological distances 50 Explorer WISE 50 Sagittarius Window Eclipsing 50 eclipsing binary 50 Type Ia 50 submillimeter galaxies 50 gamma ray burst GRB 50 habitable planets 50 CDMS experiment 50 X ray observatories 50 mammal fossils 50 HiRISE image 50 Aram Chaos 50 Mimas 50 stellar occultation 50 Lyra constellations 50 Taurus Littrow Valley 50 constellation Coma Berenices 50 comets moons 50 spatially resolved 50 Supernova #A 50 HIP #b 50 Hot Jupiters 50 galaxies 50 orbital radius 50 planetary nebulas 50 X ray spectrometer 50 spacecraft orbiting 50 giant gaseous planets 50 Saturnian moon Titan 50 chondrites 50 Caloris Basin 50 protostar 50 planetary astronomer 50 Laurasia 50 Martian terrain 50 ah dus 50 NASA Kepler 50 mammal extinctions 49 Mercury magnetosphere 49 spheroidal 49 aphelion 49 primitive meteorites 49 moons orbiting Pluto 49 Gondolo 49 X ray emission 49 Gliese #G 49 scarps indicating 49 orbited 49 outermost planet 49 deepest darkest abyss 49 S/# P2 49 Earths orbiting 49 axial tilt 49 submillimeter wavelengths 49 Mars Uranus Neptune 49 Eric Becklin 49 NEOWISE 49 Comet Shoemaker Levy 49 G#.# +#.# 49 comet Hale Bopp 49 Crab Pulsar 49 Saturn Uranus Neptune 49 Descent Imager Spectral Radiometer 49 V# Mon 49 ringed planet 49 Kepler Telescope 49 electronvolts 49 meteorite impacts 49 Saharan Desert 49 Infrared Pathfinder Satellite 49 constellation Taurus 49 Saturn moon 49 solar flares 49 Venus Uranus 49 interstellar dust clouds 49 XO 3b 49 Optical Gravitational Lensing Experiment 49 Gamma ray bursts 49 solar prominences 49 elemental abundances 49 mineral olivine 49 Active Galactic Nuclei 49 planetoid 49 Comet Hartley 49 Aqua satellite 49 exoplanets 49 neutron star 49 dirty snowballs 49 galactic halo 49 magnetic reconnection 49 Noachian period 49 planets circling 49 spiral galaxies 49 THEMIS probes 49 galactic cosmic rays 49 constellation Sagittarius 49 WISE mapped 49 HM Cancri 49 lunar soil 49 hydrated minerals 49 blue supergiant 49 called lobate scarps 49 entire Milstar constellation 49 baryonic 49 Palaeozoic sedimentary 49 Gusev crater 49 Mars Saturn Uranus 49 sodium atoms 49 Spectrograph 49 Collider Detector 49 asteroid Ceres 49 planet Gliese #c 49 submillimeter wavelength 49 phyllosilicates 49 active galactic nucleus 49 Orbiter LRO 49 Ringed Planet 49 Europa Orbiter 49 proton antiproton 49 Cepheid variables 49 Atacama Large Millimeter Array 49 smoothest flattest spot 49 brown dwarfs stellar 49 NASA QuikScat satellite 49 ionized gas 49 hypervelocity stars 49 habitable planet 49 topographical characteristics 49 GALEX 49 Geminid meteors 49 interstellar grains 49 potentially habitable planets 49 Gravitational waves 49 Orbiter MRO 49 microquasar 49 -# Celsius [001] 49 shells pockmarking homes 49 Mpc 49 onrushing comet 49 tungsten isotopes 49 astronomer Clyde Tombaugh 49 ejecta 49 Cerro Pachon 49 Methone 49 Elliptical galaxies 49 interstellar boundary 49 sub glacial lakes 49 Late Heavy Bombardment 49 geostationary orbits 49 muon neutrino 49 coronagraph 49 IntergalaticEarth 49 spectrographs 49 antiparticle 49 branching corals 49 laser altimeter 49 waxing crescent 49 shadowy craters 49 magnetic polarity 49 remote sensing instruments 49 Deep Impact probe 49 Taurids 49 NASA ICESat 49 cratered highlands 49 Candor Chasma 49 Super Kamiokande 49 geosynchronous satellites 49 Tunguska meteorite 49 orbital inclination 49 Kepler spacecraft 49 Doppler measurements 49 Magnetic Imager HMI 49 Corona Australis 49 Laser Interferometer Gravitational Wave 49 radial velocity 49 silicate mantle 49 Caltech manages 49 Jupiter icy moons 49 Thick smoke obscured 49 robotic explorers 49 dwarf planet 49 waning crescent Moon 49 asteroid collisions 49 Christophe Lovis 49 thin crescent 49 Gliese #e 49 comet Lulin 49 Mount Bosavi 49 HARPS instrument 49 exoplanets planets outside 49 arcseconds 49 zodiacal dust 49 detect gamma rays 49 asteroid Itokawa 49 Ground penetrating radar 49 Peony nebula star 49 Arecibo radio 49 lunar orbiting spacecraft 49 Navy copter crashes 49 lander rover 49 CoRoT 7b 49 fissure eruption 49 Diviner 49 orbiter Mars Odyssey