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(Click for frequent words.) 64 Beta Pictoris 64 Epsilon Eridani 63 moon Mimas 62 GJ#b 62 spiral galaxy NGC 62 Fomalhaut b 61 Oort cloud 61 moon Io 60 circumstellar disks 60 circumstellar disk 60 constellation Virgo 60 Kuiper belt 60 Oort Cloud 60 AU Mic 60 galaxy NGC 60 ejecta blanket 60 Tarantula Nebula 60 circumstellar 59 elliptical galaxy 59 protoplanetary 59 Orion nebula 59 constellation Hercules 59 Fornax cluster 59 galaxy M# [002] 59 gaseous planet 59 Tarantula nebula 59 HD#b 59 constellation Andromeda 59 Syrtis Major 59 dwarf galaxy 59 constellation Cassiopeia 58 constellation Centaurus 58 TrES 4 58 Upsilon Andromedae b 58 planet Gliese #c 58 moonlets 58 Saturnian system 58 Bonneville Crater 58 constellation Carina 58 exo planets 58 celestial sphere 58 supernova explosion 58 Eagle Nebula 58 Virgo cluster 58 proto cluster 58 galaxy M# [001] 58 blue supergiant 57 Carina Nebula 57 filamentary structures 57 GQ Lupi 57 basaltic rocks 57 star Gliese 57 moonlet 57 merging galaxies 57 interstellar cloud 57 Saturnian moons 57 trans Neptunian objects 57 protostars 57 Virgo Cluster 57 planets asteroids 57 Orcus Patera 57 icy comets 57 Andromeda galaxy 57 moons orbiting 57 moon Mab 57 globulars 57 Wolf Rayet stars 57 cluster NGC 57 spacecraft flyby 57 constellation Eridanus 57 asteroids orbiting 56 Perseus Cluster 56 galaxy cluster 56 Fermi telescope 56 protoplanet 56 X ray binary 56 constellation Taurus 56 galactic disk 56 HL Tau 56 asteroidal 56 Trojan asteroids 56 Red Rectangle 56 Antennae Galaxies 56 planet HD #b 56 lava tubes 56 lensing galaxy 56 protoplanetary disk 56 BLG #Lb 56 planetary nebula 56 planetary nebulae 56 starburst galaxy 56 protostar 56 reflection nebula 56 TNOs 56 nebular 56 jovian 56 red supergiant 56 star Proxima Centauri 56 Arsia Mons 56 orbits Saturn 56 Kuiper Belt object 56 exoplanetary 56 constellation Sagittarius 56 constellation Scorpius 55 constellation Auriga 55 Upsilon Andromedae 55 Neutron stars 55 Valles Marineris 55 GJ #b [001] 55 P/# A2 55 Fomalhaut 55 Earthlike planets 55 NGC #A 55 SN #A 55 Hellas Basin 55 constellation Aquarius 55 Tunguska Siberia 55 ionised gas 55 Trifid Nebula 55 Veil Nebula 55 Large Magellanic Cloud 55 Rosette Nebula 55 AGNs 55 icy moons 55 Supernova #A 55 planet Uranus 55 Shackleton crater 55 CoRoT satellite 55 constellation Ara 55 Baptistina 55 gaseous planets 55 Jupiter moon Io 55 RS Ophiuchi 55 Kuiper Belt 55 Coma cluster 55 Henize #-# 55 Pluto Charon 55 Tunguska meteorite 55 comets asteroids 55 mineral olivine 55 extrasolar 55 protoplanets 55 Kuiper belt objects 55 Gerard Kuiper 55 Zeta Ophiuchi 55 G#.# +#.# 55 Orion constellation 55 ionized hydrogen 55 WASP #b 54 Kepler #b 54 Cancri 54 star Fomalhaut 54 spiral galaxy 54 galactic clusters 54 VY Canis Majoris 54 barred spiral galaxy 54 Terra Sirenum 54 COROT exo 3b 54 Methone 54 Valles Marineris canyon 54 HIP #b 54 constellation Pegasus 54 Saturn outermost ring 54 spherical halo 54 rock outcrop 54 zodiac constellations 54 Arabia Terra 54 Kepler 9c 54 Milky Way Galaxy 54 KBOs 54 gravitationally bound 54 Gusev crater 54 constellation Aries 54 Type Ia supernova 54 Ultraviolet Imaging Spectrograph UVIS 54 TrES 54 comet McNaught 54 star Beta Pictoris 54 planet Gliese #g 54 TW Hydrae 54 exosolar planets 54 exoplanets planets 54 Saturnian moon 54 ionized gas 54 emission nebula 54 exoplanets orbiting 54 lunar craters 54 HD# [002] 54 Gliese #e 54 galactic halo 54 Beta Pictoris b 54 Lagoon Nebula 54 Triangulum 54 proplyds 54 permanently shadowed craters 54 Eta Carinae 54 foreground galaxy 54 supergiant stars 54 airbursts 54 planets orbits 54 stellar occultations 54 Samuel Oschin Telescope 54 supermassive 54 globular star 54 gravitational interaction 54 Small Magellanic Cloud 54 asteroid belt 54 Chazy Reef 54 Kuiper Belt objects 54 Caloris Basin 54 outermost ring 54 Saturn outermost 54 Omega Centauri 54 Saturn magnetosphere 54 sunlike star 54 Candor Chasma 54 Epsilon Aurigae 54 dynamical evolution 54 Reiner Gamma 54 ejecta 53 planet orbits 53 constellation Lyra 53 Phoebe orbits 53 Martian terrain 53 Oceanus Procellarum 53 stromatolite 53 intrinsic brightness 53 spinning neutron 53 Galilean satellites 53 constellation Vulpecula 53 spiral galaxy Messier 53 Quaoar 53 called lobate scarps 53 GRB #B 53 nebula 53 volcanic lava flows 53 Cancri e 53 HD #b [002] 53 Martian craters 53 sized planets orbiting 53 proto planetary disks 53 ferric oxides 53 Coma Cluster 53 moon Enceladus 53 active galactic nucleus 53 Orion Nebula 53 planemos 53 planetary nebulas 53 comets orbiting 53 Kuiper belt object 53 Dumbbell Nebula 53 SN #gy 53 Stephan Quintet 53 heavily cratered 53 Saturn Cassini 53 elliptical galaxy NGC 53 Shackleton Crater 53 SN #D 53 Hot Jupiters 53 distant galaxy 53 cosmic cannibal 53 constellation Ursa Major 53 bedrock outcropping 53 deep convective clouds 53 planets orbiting sun 53 Pinwheel Galaxy 53 Olympus Mons 53 asteroid Vesta 53 Corot 7b 53 lunar equator 53 galactic bulge 53 Tianyulong 53 phyllosilicates 53 volcanic moon Io 53 Gliese #g 53 interacting galaxies 53 smallest exoplanet 53 elongated orbits 53 constellation Cetus 53 galaxy NGC# 53 AB Aurigae 53 Ring Nebula 53 Gliese #c 53 coral atoll 53 binary asteroid 53 SNR #-#.# 53 supernova remnant 53 Doradus 53 gravitational microlensing 53 moons Phobos 53 MG J# +# 53 lunar crust 53 exosphere 53 retrograde orbit 53 chromosphere 53 cometary debris 53 Ares Vallis 53 Saturn Jupiter Uranus 52 Serpens Cauda 52 photosphere 52 mica schist 52 Cometary 52 grabens 52 red supergiants 52 sunlike stars 52 phyllosilicate 52 Milky Way halo 52 planetesimals 52 Martian equator 52 rocky planets 52 stellar nurseries 52 volcanic outcrops 52 eclipsing binary 52 spiral galaxy M# 52 Triangulum Galaxy 52 supergiant star 52 infalling 52 rotational axis 52 HIRES spectrometer 52 comet nucleus 52 CoRoT 7b 52 Wolf Rayet star 52 planet WASP #b 52 Galilean moons 52 XO 3b 52 NGC# 52 silica breccia 52 Churyumov Gerasimenko 52 HiRISE image 52 giant elliptical galaxies 52 Chicxulub Crater 52 subsurface ocean 52 Herbig Haro 52 Sagittarius dwarf galaxy 52 Viking Lander 52 supernova explosions 52 extrasolar planet 52 galactic cores 52 granodiorite porphyry 52 Murchison meteorite 52 GJ #b [002] 52 HD# [005] 52 J# +# [002] 52 Hunga Tonga 52 globular cluster 52 VB #b 52 Corona Borealis 52 carbonaceous chondrite 52 protoplanetary disks 52 Milky Way galaxy 52 interplanetary dust 52 meteor craters 52 Pleiades cluster 52 innermost planet 52 asteroids comets 52 IRC +# 52 filamentary structure 52 arcminutes 52 granite gneiss 52 magnetar 52 extrasolar planets orbiting 52 meteorite fragments 52 Nasa spacecraft 52 UCO Lick 52 volcanic caldera 52 mu Arae 52 Earthlike planet 52 gravitational lenses 52 planetoid 52 hypervelocity stars 52 galaxy 52 calderas 52 dwarf spheroidal 52 tumulus 52 Spiral galaxies 52 gamma ray observatory 52 fissure eruption 52 Voyager spacecraft 52 giant elliptical galaxy 52 carbonate minerals 52 amphibolite 52 Mimas 52 pallasite 52 planets orbiting distant 52 planetesimal 52 Gliese #d 52 carbonaceous chondrites 52 SDSS II 52 Antennae galaxies 52 protoplanetary disc 51 inhabitable planets 51 Comet Encke 51 gabbros 51 Bug Nebula 51 microlensing events 51 equatorial plains 51 Sojourner rover 51 distant quasar 51 terrestrial planets 51 magnetosphere 51 binary asteroids 51 asteroid 51 celestial object 51 stratovolcano 51 circular magnetic anomaly 51 asterism 51 IRAS #-# 51 Arches Cluster 51 Chankillo 51 constellation Ophiuchus 51 constellation Coma Berenices 51 Charon Pluto 51 impactors 51 outermost planets 51 Voorwerp 51 dwarf galaxies 51 Comet Shoemaker Levy 51 southern constellation Carina 51 magnetars 51 filamentary 51 prehistoric monuments 51 Earth magnetosphere 51 hematite mineral 51 planets comets 51 heliosphere 51 Sagittarius B2 51 runaway thermonuclear 51 solar corona 51 SN #C 51 BP Psc 51 transiting planet 51 Crab Nebula 51 globular clusters 51 circumstellar dust 51 Andromeda Galaxy 51 Helix Nebula 51 Hanny Voorwerp 51 Opportunity rover 51 Saturn Enceladus 51 brown dwarf 51 nebulosity 51 hydrothermal vent 51 Asteroid Belt 51 nebula NGC 51 Comet Holmes 51 V# Mon 51 moon Phobos 51 electrons orbiting 51 Comet Hartley 2 51 extrasolar planetary 51 Helmi stream 51 exo planet 51 interstellar dust grains 51 lapilli 51 observable universe 51 planets orbiting stars 51 Comet Halley 51 supernova SN 51 accretion disk 51 Chicxulub crater 51 basalt columns 51 Giza plateau 51 Pegasi 51 Submillimeter Array 51 proto planetary disk 51 galaxy clusters 51 flood basalts 51 whiz harmlessly 51 stellar occultation 51 Globular clusters 51 CoRoT #b 51 Horsehead Nebula 51 magnetic reconnection 51 impactor spacecraft 51 Tharsis Montes 51 Deep Impact eXtended Investigation 51 planetary embryos 51 Cerro Paranal 51 volcanic cone 51 ringed planet 51 Monoceros 51 Matoush fault 51 ecliptic plane 51 planet magnetosphere 51 Heliospheric Observatory SOHO 51 past boninite lavas 51 Kuiper Belt Objects 51 interstellar boundary 51 Solar System 51 fault scarps 51 rover Sojourner 51 radioactive nuclei 51 Earth objects NEOs 51 stony meteorites 51 type Ia supernova 51 planetoids 51 asteroids 51 SMBH 51 dust enshrouded 51 magma ocean 51 planets moons 50 Laurentide ice sheet 50 dwarf spheroidal galaxies 50 Jovian moon 50 Gamma ray burst 50 COROT 7b 50 exoplanet orbiting 50 Uranus Jupiter 50 meteoritic material 50 chondritic meteorites 50 dense clumps 50 remote Yamal Nenets 50 Gravitational waves 50 Ground penetrating radar 50 moons circling 50 Encke gap 50 planets Uranus 50 magmatic kimberlite 50 Saturn moons 50 mineralized intrusive 50 millisecond pulsar 50 Super Kamiokande 50 Eridanus 50 Corot 9b 50 sundog 50 galactic collisions 50 active galactic nuclei 50 radial velocity technique 50 Spitzer Space Telescope 50 aeromagnetic anomaly 50 Optical Gravitational Lensing Experiment 50 astronomer Clyde Tombaugh 50 NEAs 50 mafic intrusion 50 Palaeozoic sedimentary 50 heliosheath 50 Sarahsaurus 50 Peony nebula star 50 PSR J# 50 Keck Interferometer 50 oceanic trenches partly 50 galactic mergers 50 arcuate 50 HiRISE camera 50 planet orbiting 50 constellation Serpens 50 collisional 50 cosmological distances 50 coronal loops 50 moon Ganymede 50 solar nebula 50 sedimentary deposits 50 lowermost mantle 50 Mount Bosavi 50 Andromeda Galaxy M# 50 X ray observatory 50 Delta Cephei 50 landforms 50 airborne geophysical anomaly 50 transiting planets 50 terraformed 50 relativistic jets 50 Mpc 50 constellation Cepheus 50 exoplanet hunter 50 Kuiper belt disc 50 interstellar dust samples 50 Galaxy Evolution 50 andesitic rocks 50 Venusian surface 50 gabbro intrusive 50 zodiacal light 50 massifs 50 olivine crystals 50 abyssal plain 50 Woodhenge 50 KT boundary 50 retroreflector 50 elliptical orbits 50 circular orbits 50 geoglyphs 50 cometary impacts 50 volcanic crater 50 electromagnetic anomalies 50 martian landscape 50 brightest supernova 50 tonalite 50 limestone outcrops 50 Martian crater 50 outer planets 50 ultramafic intrusive 50 transiting exoplanet 50 atomic nucleus 50 outer corona 50 Shiveluch 50 constellation Perseus 50 Icadyptes 50 SN#A 50 ellipsoid 50 planets orbiting 50 constellation Cygnus 50 polar vortex 50 HM Cancri 50 infrared telescopes 50 meteorite impacts 50 Earth radii 50 Lomita Pina 50 constellation Aquila 50 planets 50 ignimbrite 50 eccentric orbits 50 Tunguska asteroid 49 rovers Spirit 49 IP geophysical anomaly 49 starburst galaxies 49 receding glacier 49 planetary surfaces 49 Solar TErrestrial RElations Observatory 49 moon Dione 49 basalt volcanic 49 NASA rovers Spirit 49 constellation Hydra 49 Tauri Sb 49 orbital resonance 49 superdense 49 interstellar clouds 49 constellation Bootes 49 kimberlite breccia 49 comet Tempel Tuttle 49 Martian rovers 49 olivine rich 49 neutrino particles 49 phlogopite 49 Convection Rotation 49 Type Ia 49 Cat Paw Nebula 49 Asilisaurus 49 RY Sagittarii 49 Tharsis Rise 49 Lake Vostok 49 volcanically active 49 Active Galactic Nuclei 49 silicic 49 Ontario Lacus 49 highly magnetized neutron 49 infalling gas 49 Galileo spacecraft 49 RX J# 49 spiral galaxies 49 Endurance crater 49 hydrated minerals 49 Mojzsis 49 hole CJV 49 Herschel telescope 49 substorm 49 luminous galaxies 49 Saturn innermost 49 planetary Transits 49 Martian meteorites 49 double helix nebula 49 Jupiter Ganymede 49 globular cluster M# 49 occultations 49 Saturn moon Enceladus 49 BP Piscium 49 lobate scarps 49 PKS #-# 49 Dromomeron 49 Trifid 49 constellation Leo 49 Ithaca Chasma 49 cinder cones 49 Terra Meridiani 49 gravity warps 49 gravitational interactions 49 Voyager probes 49 Titan Saturn 49 magnetospheric 49 galaxy formation 49 IRAS 4B 49 Ius Chasma 49 galaxies 49 spheroidal 49 aurorae 49 interstellar molecules 49 Transantarctic Mountains 49 primitive meteorites 49 THEMIS satellites 49 Iapetus 49 Type 1a supernovae 49 comet Churyumov Gerasimenko 49 hypocenter 49 Ulysses spacecraft 49 Carina constellation 49 constellation Orion 49 auroral displays 49 zodiacal dust 49 earthlike planets 49 pyroclastic 49 Comet Tempel Tuttle 49 HAT P 49 Infrared Astronomical Satellite IRAS 49 magnetic monopoles 49 Proxima Centauri 49 unmanned probes 49 Vredefort 49 gravitationally 49 moon Iapetus 49 astrophysical objects 49 Hematite Slope 49 Imaging Spectroradiometer MODIS instrument 49 Lake Cheko 49 brownish haze 49 disseminated sulfide 49 basaltic 49 bedrock outcrops 49 spherical shell 49 brown dwarfs 49 twin Voyager spacecraft 49 cosmic collisions 49 extinct volcanoes 49 crinoids 49 type Ia supernovae 49 Martian dust 49 Herbig Ae Be 49 trabeculae 49 CH 1C 49 ultramafic rock 49 Pleiades star 49 XTE J# 49 extragalactic 49 faintest galaxies 49 blue straggler 49 particle detectors 49 Cenozoic Era 49 magnetopause 49 landform 49 Nili Fossae 49 CoRoT 9b 49 habitable planets 49 chondrules 49 quasicrystal 49 quartz feldspar porphyry intrusive 49 Deep Impact craft 49 orbits 49 southern supercontinent 49 constellation Pisces 49 CoRoT 49 Pinwheel galaxy 49 Orientale Basin 49 pegmatitic 49 BRACELET MEASUREMENTS Opening 49 EW trending 49 albedo reflectivity 49 moons Europa 49 Siberian Traps 49 species Ardipithecus ramidus 49 felsic intrusions 49 Comet Tempel 1 49 Alycia Weinberger 49 crustal plate 49 glacial boulder 49 lunar highlands 49 Okmok Caldera 49 Geminga 49 floresiensis 49 seafloors 49 PSR J# +# 49 amphibolites 48 graphene sheet 48 distant supernovae 48 BLG #L 48 Guatemala sinkhole 48 YORP effect 48 #P/Churyumov-Gerasimenko 48 Serpens 48 Cerro Pachon 48 comet Hale Bopp 48 mafic intrusive 48 infall 48 elemental abundances 48 distant supernovas 48 Lower Goru 48 Pavonis Mons 48 wrinkle ridges 48 Martian crust 48 quasar 48 basaltic lava 48 Astronomical Units 48 Konacki 48 orb 48 Io volcanoes 48 volcanic craters 48 stockwork breccia 48 Planck telescope 48 Planitia 48 gamma ray burst GRB 48 constellation Libra 48 zircon crystals 48 Borealis basin 48 elliptical galaxies 48 Spitzer infrared spectrograph 48 malachite mineralization 48 interstellar dust particles 48 subterranean caves 48 Comet Elenin 48 eclipsing binaries 48 supercontinents 48 quartz magnetite 48 Cretaceous periods 48 ULIRGs 48 Mercury magnetosphere 48 smallest extrasolar planet 48 robotic lander 48 X ray wavelengths 48 torus 48 magnetite skarn 48 meteoroid 48 equatorial bulge 48 stone cairns 48 Kuiper Belt Object 48 undersea volcano 48 coronal mass ejections CMEs 48 Jovian moons 48 potentially habitable planets 48 coronagraph 48 GRB # 48 Denisova Cave 48 asteroid Steins 48 noctilucent clouds 48 Herschel Crater 48 tetrahedron 48 optical wavelengths 48 PSR B# +# 48 Hurdia 48 micrometeorite impacts 48 Kepler Telescope 48 Cassini Regio 48 constellation Draco 48 J#.# [001] 48 Explorer WISE 48 Earth magnetotail 48 chondrites 48 oceanic crust 48 KT extinction 48 dusty disks 48 interstellar dust clouds 48 Linhenykus 48 silicified outcrops 48 moon Europa 48 felsic intrusion 48 Jupiter magnetosphere 48 PASADENA Calif. Astronomers 48 geo stationary orbit 48 volcanic islands 48 X ray telescopes 48 accretion disks 48 supernova remnants 48 ESO VLT 48 volcano Olympus Mons 48 Galactic cosmic rays 48 astronomical observatory 48 HARPS instrument 48 habitable zones 48 WMAP satellite 48 NASA STEREO 48 Pegasi b 48 Drygalski ice tongue 48 hydrothermally altered 48 dolerite 48 arcsecond 48 WISE spacecraft 48 THEMIS probes 48 iridium layer 48 volcanogenic 48 comet 48 granitoids 48 ESA XMM Newton 48 Enceladus 48 OGLE TR #b 48 turbidites 48 geologically active 48 Corona Australis 48 millisecond pulsars 48 felsic tuffs 48 hypervelocity star 48 permanently shadowed crater 48 tectonic faults 48 mantle plumes 48 Venusian atmosphere 48 Viking orbiters 48 extrasolar planet HD #b 48 Cepheid variables 48 Saturn moon Iapetus 48 ray Space Telescope 48 UDFy # 48 manto mineralization 48 tidal bulge 48 exoplanet 48 Klaza Zone 48 polar layered 48 subglacial lake 48 Trapezium 48 moon Charon 48 Martian surface 48 ancient hominid 48 Mars Meridiani Planum 48 permanently shadowed 48 martian rocks 48 rhyolite tuff 48 brecciated silicified 48 felsic metavolcanic 48 orbiting 48 inverted cone 48 silicate dust 48 Caloris basin 48 olivine 48 Gamburtsev Mountains 48 supercolony 48 muon neutrino 48 colliding galaxies 48 airglow 48 Mars landers 48 distant quasars 48 Fossae 48 neutrino telescope 48 meteoroids 48 Epsilon Indi 48 coarse pyrite 48 molten rocks 48 neutrino detector 48 tidal tails 48 cryovolcanism 48 Giganotosaurus 48 Bramley Murton 48 micrometeoroids 48 amorphous silica 48 outermost planet 48 silicate mantle 48 Elysium Planitia 48 microquasar 48 spacecraft thrusters 48 Makemake 47 lunar meteorites 47 henge 47 Earth asteroids NEAs 47 sheared mafic 47 Astrological lore 47 Earth asteroids 47 Antarctic Dry Valleys 47 Shiga farmhouse 47 interstellar distances 47 gravitational pulls 47 distant galaxy clusters 47 Casa Berardi Fault 47 Ice Age mammals 47 EPOXI spacecraft 47 spinels 47 biosignatures 47 magma chamber 47 gravitational attraction 47 NASA rovers 47 Eridani 47 kimberlite outcrop 47 active volcanism 47 moons Io 47 cometary material 47 Cygnus Lyra region 47 Pluto Eris 47 lithosphere 47 Butterfly Nebula 47 outermost layers 47 Evolution Explorer 47 ellipsoids 47 sub glacial lakes 47 silicon monoxide 47 Cosmic Microwave Background 47 Mars moon Phobos 47 Chilean Atacama Desert 47 meteoroid impacts 47 layered bedrock 47 onrushing comet 47 S/# P2 47 SOHO spacecraft 47 Neogene 47 antiparticle 47 Omega Nebula 47 Great Orion Nebula 47 extinct volcano 47 Caloris 47 Birimian metasediments 47 crater 47 komatiitic 47 interstellar medium 47 Saturnian 47 volcanic cones 47 smallest exoplanets 47 shadowy craters 47 Saturn rings