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(Click for frequent words.) 77 protoplanetary disk 73 planetesimals 72 magma ocean 71 chondrules 71 nebular 70 supernova explosions 70 ejecta 70 interstellar medium 70 supernova explosion 69 protoplanetary disks 69 primitive meteorites 68 protoplanet 68 protoplanets 67 CAIs 67 protostar 67 photosphere 66 X ray emission 66 AB Aurigae 66 interstellar clouds 66 accretion disk 66 Oort Cloud 66 planetary nebula 66 icy moons 66 chondrites 65 Oort cloud 65 silicate mantle 65 interstellar cloud 65 galaxies 65 silicate dust 65 quark gluon plasma 65 helium nuclei 65 lunar crust 65 silicon monoxide 65 neutron star 65 icy comets 65 WASP #b 65 phyllosilicates 65 lavas 65 dwarf galaxy 65 rocky planets 65 circumstellar disk 64 interstellar dust 64 galaxy clusters 64 nebula 64 sunlike star 64 nuclei 64 reionization 64 carbonate minerals 64 supernova 64 circumstellar 64 galactic disk 64 supernova remnants 64 terrestrial planets 64 Saturn magnetosphere 64 magnetar 64 metallicity 64 radioactive decay 63 Neutron stars 63 supernovae 63 solar corona 63 asteroidal 63 cosmic microwave background 63 planetary nebulae 63 galactic cosmic rays 63 elliptical galaxies 63 Kuiper belt 63 comet nucleus 63 infall 63 galaxy cluster 63 Epsilon Eridani 63 cometary material 63 supernova remnant 63 Cosmic Microwave Background 63 Wolf Rayet star 63 weakly interacting 63 helium atoms 63 red supergiant 63 Type Ia supernova 63 globular cluster 62 molten magma 62 circumstellar disks 62 silicates 62 chromosphere 62 subsurface ocean 62 dirty snowballs 62 magmas 62 nucleosynthesis 62 spherically symmetric 62 blue supergiant 62 accretion disks 62 zodiacal dust 62 Eta Carinae 62 elemental abundances 62 SN #gy 62 supermassive stars 62 stony meteorites 62 basaltic rocks 62 globular clusters 62 AGNs 62 extrasolar 62 dwarf galaxies 62 neutron stars 62 Maunder minimum 62 filamentary structure 62 observable universe 62 brown dwarfs 62 quasars 62 Milky Way halo 62 SN #A 62 supernovae explosions 62 isotopic ratios 62 brown dwarf 62 intrinsic brightness 62 GJ#b 62 dynamical evolution 61 elliptical galaxy 61 neutralinos 61 sodium atoms 61 globulars 61 heliosheath 61 proto galaxies 61 protostars 61 isotopic composition 61 hydroxyl molecules 61 comets 61 lithosphere 61 mantle plumes 61 Beta Pictoris 61 atomic nuclei 61 Late Heavy Bombardment 61 hydrated minerals 61 gamma ray emission 61 galaxy formation 61 carbonaceous chondrites 61 baryonic 61 planets 61 gaseous planet 61 cosmic ray flux 61 Gravitational waves 61 Milky Way Galaxy 61 gravitational tides 61 permanently shadowed craters 61 luminous galaxies 60 sunlike stars 60 silicate minerals 60 exosphere 60 GJ #b [002] 60 Henize #-# 60 quasar 60 crystallites 60 Upsilon Andromedae 60 Carina Nebula 60 olivine 60 radioactive nuclei 60 Fomalhaut b 60 V# Mon 60 moonlet 60 deuterium 60 superfluid 60 supercontinent 60 isotope ratios 60 Magellanic Stream 60 SN#A 60 silicate grains 60 glaciations 60 electron neutrinos 60 KBOs 60 hydrogen helium 60 stellar nurseries 60 type Ia supernova 60 HD #b [002] 60 carbonaceous chondrite 60 polar vortex 60 distant galaxies 60 ferric oxides 60 Alfven waves 60 magnetospheric 60 galactic halo 60 heliosphere 60 proplyds 60 interstellar dust grains 60 moons orbiting 60 silicate crystals 60 meteorite impacts 60 gravitationally 60 spacetime 60 planetary orbits 60 aerosol particles 60 gaseous planets 60 chlorine monoxide 60 Saturn rings 60 interglacial periods 60 planet HD #b 60 starburst galaxies 60 abundances 60 plagioclase 60 CoRoT 7b 60 hot Jupiters 60 meteor impacts 60 ULIRGs 60 comet nuclei 60 Kuiper belt objects 59 organic molecules 59 fermion 59 clathrates 59 gravitational interaction 59 Enceladus 59 baryonic matter 59 HD#b 59 gaseous 59 Iapetus 59 galaxy 59 Venusian atmosphere 59 red supergiants 59 GRBs 59 Hawking radiation 59 GJ #b [001] 59 helium atom 59 HL Tau 59 Milky Way galaxy 59 silicate rocks 59 isotope fractionation 59 gravitational interactions 59 impactors 59 carbonate globules 59 atmospheric methane 59 Bose Einstein condensate 59 GQ Lupi 59 baryons 59 starburst galaxy 59 WMAP satellite 59 jovian 59 neutrino mass 59 Kuiper Belt Objects 59 gamma ray burst 59 Hot Jupiters 59 comet 59 X ray binaries 59 merging galaxies 59 VY Canis Majoris 59 magnetosphere 59 protoplanetary discs 59 martian atmosphere 59 ionized hydrogen 59 atoms 59 sterile neutrino 59 Murchison meteorite 59 millisecond pulsar 59 energetic electrons 59 RS Ophiuchi 59 lunar meteorites 59 redshift 58 asthenosphere 58 meteorite bombardment 58 sulfate aerosols 58 quasicrystal 58 Cosmologists 58 cometary 58 Kepler #b 58 distant supernovae 58 nanobubbles 58 super Earths 58 strange quark 58 kaons 58 -# degrees Fahrenheit [002] 58 Neoproterozoic 58 post perovskite 58 oxygen isotope 58 Milky Way 58 Corot 7b 58 lunar magma 58 Bullet Cluster 58 planets orbits 58 planetesimal 58 water vapor 58 planetary embryos 58 mineral olivine 58 antineutrinos 58 accreting 58 hydrogen atoms 58 supermassive black holes 58 millisecond pulsars 58 BP Piscium 58 Solar System 58 volcanism 58 meteoritic material 58 Noachian 58 Cosmic Microwave Background CMB 58 Wolf Rayet stars 58 oxygen isotopes 58 interstellar space 58 redshifts 58 chondritic 58 Corot 9b 58 X ray pulses 58 W boson 58 magnetic reconnection 58 Bok globules 58 spherules 58 nebulae 58 phyllosilicate 58 Saturnian 58 substorm 58 comets orbiting 58 CMB radiation 58 gravitationally bound 58 gamma rays emitted 58 antiferromagnets 58 GPa 58 Crab Nebula 58 luminosities 58 Galilean moons 58 collisional 58 tholins 58 Planetary nebulae 58 ionized particles 58 magnetic polarity 58 SNR #-#.# 58 Jupiter moon Io 58 active galactic nuclei 58 thermosphere 58 nucleobases 58 superheavy elements 58 HIP #b 58 supermassive black hole 58 mesosphere 58 thermonuclear reactions 57 Comet Holmes 57 ionized gas 57 Eemian 57 pulsar 57 alpha particles 57 neutrino 57 sulfate aerosol 57 Higgs bosons 57 missing baryons 57 cosmic rays 57 spiral nebulae 57 protoplanetary 57 Hesperian epoch 57 Supernovae 57 Earth magnetosphere 57 meteoroids 57 retrograde orbit 57 type Ia supernovae 57 Bose Einstein condensation 57 Martian meteorites 57 ionised 57 Saturnian moon 57 Noachian era 57 emission nebula 57 coronal mass ejections CMEs 57 continental crust 57 Gamma rays 57 noble gases 57 baryon 57 supernovas 57 CoRoT #b 57 Trifid Nebula 57 supersolid 57 reflection nebula 57 relativistic protons 57 supersymmetric particles 57 innermost planet 57 Bug Nebula 57 isotopic compositions 57 supergiant star 57 gravitational attraction 57 Stephan Quintet 57 Comet Tempel Tuttle 57 Antennae Galaxies 57 COROT 7b 57 Beta Pictoris b 57 galaxy M# [002] 57 Mojzsis 57 planets orbiting stars 57 orbital eccentricity 57 dynamical 57 P/# A2 57 gravitational radiation 57 basaltic lava 57 magnetic fields 57 planet magnetosphere 57 Cepheids 57 hematite mineral 57 KT boundary 57 planemos 57 particle acceleration 57 orbital resonance 57 sulfur isotope 57 filamentary 57 planets comets 57 magma chamber 57 matter antimatter asymmetry 57 hydrated silica 57 ionise 57 Kuiper Belt object 57 spicule 57 moon Enceladus 57 Magnetars 57 constellation Ursa Major 57 quark gluon 57 distant quasars 57 proto planetary disk 57 Kuiper Belt 57 Hubble observations 57 galactic mergers 57 Earthlike planets 57 zircons 57 Globular clusters 57 Mott insulator 57 coccolithophores 56 maser emission 56 neutrons 56 outer corona 56 carbon isotopes 56 glaciation 56 Alfvén waves 56 outer planets 56 infalling 56 stromatolite 56 solar minima 56 colliding galaxies 56 cratons 56 electrons orbiting 56 lensing galaxy 56 heavily cratered 56 Type Ia 56 photon energies 56 Bose Einstein condensates 56 galactic clusters 56 elongated orbits 56 polaritons 56 constellation Virgo 56 Perseus cluster 56 comet Tempel Tuttle 56 electron density 56 moon Mimas 56 runaway thermonuclear 56 ultraluminous galaxy 56 graphite whiskers 56 comet Wild 56 Cancri e 56 aragonite 56 anisotropy 56 ALH# 56 isotopic 56 Ordovician extinction 56 planet Gliese #c 56 interstellar dust clouds 56 primordial ingredients 56 distant galaxy 56 jarosite 56 troposphere 56 inhomogeneous 56 antimatter particles 56 crystalline silicates 56 Epsilon Aurigae 56 GeV 56 bosonic 56 Martian atmosphere 56 gravitational pulls 56 Large Magellanic Cloud 56 noctilucent clouds 56 AU Mic 56 G#.# +#.# 56 potassium atoms 56 pyroxene 56 Jupiter Ganymede 56 exoplanet orbiting 56 chondritic meteorites 56 nucleons 56 circular orbits 56 moon Ganymede 56 J# +# [002] 56 dynamical processes 56 Coma Cluster 56 emits X rays 56 exciton 56 Type Ia supernovae 56 galaxy M# [001] 56 particles 56 Paleocene Eocene Thermal Maximum 56 SN #C 56 supermassive 56 constellation Carina 56 spiral galaxies 56 GRB # 56 electron pairing 56 boson 56 marine sediments 56 substorms 56 interglacial period 56 meteoritic 56 prebiotic molecules 56 cosmic ray intensity 56 CoRoT 9b 56 photochemistry 56 Andromeda galaxy 56 magnetotail 56 microscopic specks 56 magnetic monopoles 56 magnetite crystals 56 wavefunction 56 Virgo Cluster 56 presolar 56 radiative 56 silicate 56 filamentary structures 56 moonlets 56 comets asteroids 56 planet WASP #b 56 spatially resolved 56 Einstein cosmological constant 56 plate tectonics 56 planets moons 56 Methane hydrate 56 cuprates 56 corona 56 moon Mab 56 YORP effect 56 galaxy redshift 55 V# Sgr 55 gamma rays 55 Sagittarius B2 55 Jupiter Saturn Uranus 55 planet orbits 55 biogenic 55 redshifted 55 planet orbiting 55 stromatolites 55 TrES 4 55 photochemical reactions 55 coronal loops 55 sedimentary layers 55 Permian extinction 55 comet dust 55 cosmic ray 55 HM Cancri 55 meteoroid impacts 55 Hanny Voorwerp 55 universe 55 exoplanet 55 periodicities 55 Arches Cluster 55 spherical particles 55 SMBHs 55 axial tilt 55 chemical abundances 55 quasiparticle 55 antiprotons 55 optical spectra 55 hypernova 55 SMBH 55 atomic nucleus 55 olivine mineral 55 volcanic magma 55 perihelion 55 Dirac equation 55 axions 55 NASA Wilkinson Microwave 55 cometary dust 55 electron ion 55 Red Rectangle 55 rotating neutron stars 55 Jupiter magnetosphere 55 cuprate superconductors 55 colloidal crystals 55 osmium 55 chemical composition 55 Phoebe orbits 55 kerogen 55 X ray telescopes 55 polar stratospheric 55 volcanic moon Io 55 muon neutrinos 55 gravitational tugs 55 Milankovitch cycles 55 non baryonic 55 Galactic cosmic rays 55 galactic bulge 55 X ray binary 55 magma 55 ejecta blanket 55 cosmic ray particles 55 hydroxyl 55 neutralino 55 sunspot cycle 55 pre biotic 55 X ray emitting 55 XTE J# 55 spacecraft flyby 55 exoplanetary 55 sedimentary rock 55 microquasar 55 Saturn Enceladus 55 binary asteroid 55 magnetars 55 particles WIMPs 55 pnictides 55 Gondwanaland 55 Cassini flybys 55 mesons 55 novae 55 Meridiani 55 exoplanets orbiting 55 supercontinents 55 infalling gas 55 ultracold 55 martensite 55 dense clumps 55 spectral measurements 55 Dwarf galaxies 55 Big Bang 55 spectroscopic analysis 55 visible wavelengths 55 sulfur isotopes 55 galaxy NGC 55 lunar highlands 55 planets Uranus 55 Cygnus X 55 Type 1a supernovae 55 tau neutrinos 55 glacial cycles 55 silicic 55 Fornax cluster 55 Adam Riess 55 Comet Halley 55 outer layers 55 zircon crystals 55 sterile neutrinos 55 Virgo cluster 55 relativistic particles 55 electron pairs 55 Laurentide ice sheet 55 WMAP 55 outermost planet 55 goethite 55 microplastics 54 Scheila 54 crustal 54 seafloor sediments 54 antiparticles 54 calcite 54 stellar occultations 54 constellation Eridanus 54 BP Psc 54 filaments 54 antiquarks 54 spheroidal 54 CMB photons 54 sediments deposited 54 lunar perigee 54 Anisotropy Probe 54 Klekociuk 54 Halley comet 54 oceanic crust 54 coronal mass ejection 54 hydrogen isotopes 54 habitable zones 54 lunar craters 54 GRB #B 54 ultraviolet photons 54 primordial 54 Great Oxidation Event 54 neutrinos 54 IRAS 4B 54 undiscovered particle 54 Churyumov Gerasimenko 54 oxygenic photosynthesis 54 isotope composition 54 orbitals 54 Cryogenian 54 BIFs 54 Voyager spacecraft 54 presolar grains 54 iron oxides 54 superfluids 54 neutrino particles 54 deep convective clouds 54 solitons 54 hydrosphere 54 smallest exoplanet 54 cosmological distances 54 cryovolcanism 54 melt inclusions 54 magnetic substorms 54 Snowball Earth 54 electron neutrino 54 oxidized mercury 54 brightest supernova 54 exoplanets 54 distant supernovas 54 excitons 54 eclipsing binary 54 branes 54 constellation Cassiopeia 54 Gamma ray bursts 54 barred spiral galaxy 54 Martian meteorite 54 muon 54 clathrate 54 lowermost mantle 54 earth crust 54 submillimeter galaxies 54 Earth radii 54 iron pnictides 54 IRC +# 54 Orion nebula 54 Martian dust 54 coronal holes 54 hydrogens 54 torus 54 velocity dispersion 54 crustal rocks 54 SN #E 54 abiogenesis 54 eccentric orbits 54 Cabeus crater 54 galactic cores 54 olivine crystals 54 lunar soil 54 comet McNaught 54 diatomic 54 copper oxide superconductors 54 dipolar 54 downwelling 54 asteroids comets 54 hydrogen nuclei 54 tropical troposphere 54 emit X rays 54 proto cluster 54 asteroid belt 54 Hydrates 54 zodiacal light 54 gamma ray bursts 54 spherical halo 54 hypervelocity stars 54 lithospheric 54 airglow 54 SDSS II 54 Type Ia supernovas 54 #P/Churyumov-Gerasimenko 54 tidally 54 meridional flow 54 spectroscopically 54 infrared wavelengths 54 atmospheric aerosols 54 Bose Einstein condensate BEC 54 primordial soup 54 solar irradiance 54 constellation Centaurus 54 circumstellar dust 54 magmatic 54 olivines 54 sunspot activity 54 Europa Ganymede 54 geoneutrinos 54 Hadean Eon 54 X ray wavelengths 54 elliptical orbits 54 electron orbitals 54 positronium 54 BLG #Lb 54 Saturn auroras 54 ultracold atoms 54 exoplanetary systems 54 Valles Marineris 54 fermionic 54 Mercury magnetosphere 54 isotopic signature 54 rubidium atoms 54 galactic alignment 54 isotopic variations 54 Kuiper Belt Object 54 tropospheric 54 sized planets orbiting 53 alkali metal 53 Galilean satellites 53 kelvin 53 Type 1a supernova 53 Hadean 53 Ordovician 53 WIMPs 53 sulfate salts 53 sedimentary deposits 53 basalts 53 albedo reflectivity 53 chemically reactive 53 star Beta Pictoris 53 sunspots 53 -# degrees Celsius [001] 53 Lagoon Nebula 53 solar neutrinos 53 Cambrian Period 53 energetic gamma rays 53 mineralogical composition 53 meteorite fragments 53 Gliese #c 53 active galactic nucleus 53 Small Magellanic Cloud 53 forams 53 supernova SN 53 Earthlike planet 53 polar caps 53 RS Oph 53 magma cools 53 lithium atoms 53 plasmasphere 53 blackbody 53 cosmological constant 53 femtoseconds 53 topological defects 53 giant gaseous planets 53 tungsten isotopes 53 Saturn moons 53 electrons protons 53 mid latitudes 53 trimers 53 explosive volcanism 53 homochirality 53 Galileo spacecraft 53 thermal gradients 53 Upsilon Andromedae b 53 auroral 53 Lyman alpha 53 longwave radiation 53 micro meteorites 53 Milankovitch 53 thermal decomposition 53 single celled algae 53 strangelet 53 coronal heating 53 Uranus 53 ionize 53 Saturn Uranus 53 pulsars 53 Io volcanoes 53 backscattered 53 #gy 53 RX J# 53 hydrothermal 53 spontaneous fission 53 superposed 53 uranium thorium 53 starquakes 53 polar craters 53 gaseous methane 53 rotational axis 53 Archaean 53 spicules 53 martian meteorites 53 Great Conveyor Belt 53 ultraviolet wavelengths 53 MG J# +# 53 carbon cenospheres 53 radiative cooling 53 WHIM 53 Syrtis Major 53 Muons 53 Higgs particle 53 protons 53 constellation Hercules 53 prebiotic chemistry 53 Konacki 53 meteoroid 53 astronomical objects 53 interglacial 53 extrasolar planetary systems 53 tropopause 53 elemental composition 53 superconduct 53 Hubble Constant 53 gravitational lensing 53 Saturn moon Enceladus 53 magnetic dynamo 53 electromagnetic phenomena 53 ionized gases 53 yardangs 53 CoRoT satellite 53 isotopic signatures 53 star Gliese 53 Bose Einstein Condensate 53 primitive organisms 53 Last Glacial Maximum 53 blue straggler 53 antiparticle 53 Dauphas 53 ultra violet radiation 53 SN Ia 53 spectroscopic measurements 53 Swift Tuttle 53 Quaoar 53 subatomic particle 53 B meson 53 lunar regolith 53 Neptune Uranus 53 relativistic proton dark 53 Quadrantid 53 extragalactic 53 deglaciation 53 regolith 53 exo planet 53 comet tail 53 sun corona 53 icy crust 53 Tharsis Rise 53 Orion Nebula 53 cosmic strings 53 multicellular animals 53 Tycho supernova 53 heliopause 53 cometary impacts 53 Earth biosphere 53 Cambrian Explosion 53 water vapor condenses 53 cosmic phenomena 53 atomic particles 53 insolation 53 inhomogeneities 53 high redshift galaxies 53 atmospheric circulations 53 intracluster 53 foraminifera 53 Geminga 53 Quadrantids 53 Neukum 53 oxygen isotope ratios 53 Proxima Centauri 53 trans Neptunian objects 53 isotopic fractionation 53 polariton 53 supercooled liquid 53 Earthlike 53 cosmic cannibal 53 Cassini flyby 53 γ 53 planet Gliese #g 53 spinels 53 Permian Period 53 coronal mass ejections 53 wrinkle ridges 53 cosmological parameters 53 nucleation 53 Allende meteorite 53 Younger Dryas 53 magnetized plasma 52 quantum particle 52 advection 52 midlatitudes 52 deuterium atoms 52 proton proton 52 Saturn aurora 52 dwarf spheroidal galaxies 52 sulfide minerals 52 star Proxima Centauri 52 sulfur atom 52 outer crust 52 Supernova #A 52 metastable 52 peridotitic 52 climate forcings 52 Hipparcos 52 extrasolar planet 52 atmospheric CO 52 Wolszczan 52 faint galaxies 52 Cat Paw Nebula 52 globular star 52 Wilkinson Microwave Anisotropy Probe 52 strange quarks 52 GZK cutoff 52 Mpc 52 ion collisions 52 magnetopause 52 planet Uranus 52 Einstein equations 52 hydrides 52 Mössbauer 52 polarimetry 52 orbited Jupiter 52 molten rocks 52 zinc sulfide 52 Gliese #g 52 Itokawa 52 cometary debris 52 total solar irradiance 52 FeO 52 constellation Aquarius 52 Mandushev 52 superheavy element 52 transiting planets 52 cosmologists 52 Cosmic rays 52 austenite 52 Myr 52 electroweak 52 -# degrees centigrade [001] 52 tectonic plate movements