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(Click for frequent words.) 78 meteorites 74 meteor 67 Meteorite 62 comet 62 meteoroid 61 iron meteorite 61 asteroid 61 meteorite fragments 59 lunar meteorite 58 pallasite meteorite 58 stony meteorite 56 pallasite 56 bolide 56 comets 56 Meteorites 55 Chicxulub 55 carbonaceous chondrite 55 Murchison meteorite 55 Martian meteorite 55 Martian meteorites 55 hailstone 54 Halley comet 54 meteoroids 54 meteorite crater 53 supernova explosion 53 Sipiera 53 stony meteorites 53 meteor fragment 53 carbonaceous chondrites 53 dinosaur fossil 53 meteor crater 53 ejecta 53 cometary dust 53 spherules 53 protoplanet 52 concretions 52 icy comets 52 zircon crystal 52 lunar meteorites 52 Tunguska meteorite 52 olivine 51 gaseous planet 51 Earthly contamination 51 Upsilon Andromedae b 51 coprolite 51 asteroids 51 comet dust 51 GJ#b 50 comet nucleus 50 meteorite hunter 50 Comet Shoemaker Levy 50 Kepler #b 50 cosmic ray 50 cometary 50 lunar soil 50 meteorite hunters 50 phyllosilicates 50 petrified wood 49 neutron star 49 dinosaur footprints 49 iridium layer 49 asteroid Apophis 49 Apophis 49 COROT 7b 49 Corot 7b 49 olivine mineral 49 dinosaur extinction 49 Willamette meteorite 49 comet Shoemaker Levy 49 Oort Cloud 49 planet orbiting 49 dinosaur species 49 type Ia supernova 49 fossils 49 cometary material 49 Gliese #c 49 Tycho supernova 48 Fomalhaut b 48 Jay Melosh 48 planetoid 48 Tagish Lake meteorite 48 SN #gy 48 NEAs 48 chondritic meteorites 48 Saturn rings 48 Tunguska Siberia 48 supernova 48 Apophis asteroid 48 RQ# 48 impactors 48 astronomers 48 mastodon bones 48 Allende meteorite 48 protoplanets 48 Eta Carinae 48 icy moons 48 Earthlike planet 48 micro meteorites 48 comets asteroids 48 mastodon tooth 48 ammonite 47 tektites 47 olivine crystals 47 P/# A2 47 asteroid Eros 47 Chicxulub impact 47 dinosaur bones 47 Brenham meteorite 47 rocky planets 47 Gusev crater 47 extrasolar 47 WASP #b 47 ALH# 47 smallest exoplanet 47 planetesimals 47 Jenniskens 47 Chicxulub crater 47 micrometeoroids 47 extrasolar planet 47 dinosaur fossils 47 meteor impacts 47 coronal mass ejection 47 asteroid Itokawa 47 Galileo spacecraft 47 dinosaur skeleton 47 inner moons 47 sedimentary rock 47 lavas 47 mineral hematite 47 Late Heavy Bombardment 47 astronomer 47 complete dinosaur skeleton 47 GJ #b [001] 47 dwarf galaxy 47 comet McNaught 47 freshwater jellyfish 47 solar nebula 46 astronomical observatory 46 exoplanet 46 neutrino 46 spacecraft flyby 46 galactic clusters 46 Astronomers 46 interstellar dust 46 distant galaxy 46 elliptical galaxy 46 asteroidal 46 Kuiper Belt object 46 chondrites 46 KT boundary 46 Bedout 46 merging galaxies 46 supervolcano 46 zircon crystals 46 carbonate minerals 46 meteorite craters 46 comet particles 46 meteorite impacts 46 Wolf Rayet star 46 planetesimal 46 mastodon tusk 46 Meteor Crater 46 celestial object 46 crater 46 stromatolite 46 Korotev 46 pulsar 46 Nasa spacecraft 46 Higgs particle 46 zircons 46 sterile neutrino 46 moonlets 46 geochronology 46 transiting exoplanet 46 planets orbiting sun 46 flying saucer 46 Gliese #g 46 telescopes astronomers 46 Tunguska 46 interstellar dust grains 46 Halley Comet 46 hematite mineral 46 chondrite 46 Martian rocks 46 GRB # 46 Large Magellanic Cloud 45 meteorite bombardment 45 quark gluon plasma 45 meteors 45 extraterrestrial 45 globular clusters 45 geologically active 45 TrES 4 45 planet Uranus 45 meteor shower 45 infrared telescope 45 interplanetary dust 45 antihelium 45 continental crust 45 microfossils 45 globulars 45 magnetar 45 Kuiper Belt Object 45 sedimentary deposits 45 lunar crust 45 volcanism 45 dwarf galaxies 45 Toutatis 45 ordinary chondrite 45 Meridiani 45 ejecta blanket 45 smallest extrasolar planet 45 Martian soil 45 fossilized skull 45 igneous rock 45 hailstones 45 planetary astronomer 45 Zolensky 45 galaxy cluster 45 brightest supernova 45 planet HD #b 45 Gerard Kuiper 45 cometary debris 45 micrometeorites 45 Tunguska explosion 45 impactor 45 Shoemaker Levy 45 Swift Tuttle 45 runaway thermonuclear 45 GJ #b [002] 45 plesiosaur 45 Earthlike planets 45 CAIs 45 Omega Centauri 45 G#.# +#.# 45 telescope 45 GRB #B 45 exoplanet orbiting 45 amateur astronomer 45 Saturn moon 45 Upsilon Andromedae 45 Cryogenian period 45 Milky Way Galaxy 45 permanently shadowed craters 45 Petrified wood 45 igneous rocks 45 Gondwanaland 45 Chicxulub asteroid 44 exo planet 44 microquasar 44 dryosaurus 44 SOHO comet 44 constellation Carina 44 meteoritic 44 Jupiter moon Io 44 graphite whiskers 44 Higgs boson particle 44 phyllosilicate 44 melt inclusions 44 gamma ray burst 44 BLG #Lb 44 floresiensis 44 stromatolites 44 Goldilocks planet 44 moons orbiting 44 coprolites 44 juvenile Tyrannosaurus rex 44 fossilized bones 44 asteroids comets 44 interstellar dust particles 44 basalt 44 BP Psc 44 neutron stars 44 asteroids orbiting 44 artifact 44 Quadrantids 44 Fermi telescope 44 Tunguska object 44 geoneutrinos 44 fossilized remains 44 chondritic 44 Type Ia supernova 44 hominid fossil 44 interstellar particles 44 Robert Jedicke 44 exoplanetary 44 lunar surface 44 SN #A 44 supergiant stars 44 fossilized dinosaur eggs 44 Toba eruption 44 fossilized dung 44 dust particles 44 active volcanism 44 subatomic particle 44 Carey Lisse 44 magnetic monopoles 44 APXS 44 Ontario Lacus 44 microlensing events 44 AB Aurigae 44 volcanic rock 44 astronomer Clyde Tombaugh 44 oceanic crust 44 moon Mab 44 Earthlike 44 Cretaceous Paleogene boundary 44 Hanny Voorwerp 44 Chicxulub Crater 44 comet Hale Bopp 44 meteor fireball 44 planetary geologists 44 primitive meteorites 44 heavily cratered 44 craters 44 Iapetus 44 Milky Way galaxy 44 projectile 44 bonebed 44 Itokawa asteroid 44 Mount Stromlo Observatory 43 meteor fragments 43 Kuiper belt object 43 lunar regolith 43 CoRoT satellite 43 barred spiral galaxy 43 microscopic specks 43 planets 43 Asteroid 43 Saturnian moon 43 extrasolar planets 43 Gliese #d 43 supernova explosions 43 elemental abundances 43 martian meteorites 43 astronomical objects 43 SN #E 43 dirty snowballs 43 planets orbiting 43 southern supercontinent 43 Kuiper Belt Objects 43 Comet Halley 43 Martian equator 43 lunar crater 43 galaxy clusters 43 CoRoT 9b 43 Oort cloud 43 Saturn moons 43 partial skeleton 43 infalling 43 Andromeda galaxy 43 NASA Voyager spacecraft 43 Henize #-# 43 sulfur isotope 43 BP Piscium 43 seafloor sediments 43 noctilucent clouds 43 Higgs bosons 43 magma ocean 43 planet Gliese #g 43 TNOs 43 circumstellar 43 Wolszczan 43 Itokawa 43 cosmic rays 43 nano thermite 43 cataclysmic eruption 43 thermonuclear explosion 43 MN4 43 particle 43 asteroid impacts 43 Quaoar 43 HIP #b 43 COROT exo 3b 43 perchlorate salts 43 Lyrids 43 Hesperian Epoch 43 Martian crater 43 exo planets 43 Supernova #A 43 SN #D 43 Permian extinction 43 mineral olivine 43 geomagnetic storm 43 woolly mammoth tusk 43 asteroid collisions 43 Samuel Oschin Telescope 43 Cancri e 43 Antennae Galaxies 43 Clyde Tombaugh 43 horned dinosaur 43 Orionids 43 Quadrantid 43 fossilized dinosaur dung 43 interstellar grains 43 Tyrannosaurus rex 43 planemos 43 Gamma ray burst 43 Stardust capsule 43 Kuiper Belt 43 Neukum 43 Nubian Desert 43 Haumea 43 supernova remnant 43 red supergiant 43 gravitationally bound 43 distant supernovae 43 HD #b [002] 43 radioactive nuclei 43 Kuiper belt 43 Bottke 43 martian rocks 43 Epsilon Aurigae 43 Lapen 43 ammonites 43 sauropod 43 #gy 43 strange quark 43 prehistoric 43 astrobiologists 43 Epsilon Eridani 43 colliding galaxies 43 scarab 43 impactor spacecraft 43 Cabeus 43 fossil 42 wrinkle ridges 42 Syrtis Major 42 galaxies 42 intrinsic brightness 42 celestial bodies 42 fossil specimens 42 HD#b 42 Saturn Enceladus 42 Deccan Traps 42 GQ Lupi 42 habitable planets 42 fossilized dinosaur 42 Evolution Explorer 42 KBOs 42 polar vortex 42 silicates 42 RS Ophiuchi 42 PSR J# 42 Ice Age mammals 42 observable universe 42 Willamette Meteorite 42 Comet Hale Bopp 42 Mojzsis 42 Asteroid Itokawa 42 Maunder minimum 42 ASTRONOMERS 42 comets meteors 42 cryovolcanism 42 fragments 42 Chazy Reef 42 carbonaceous chondrite meteorites 42 Bullet Cluster 42 Andromeda Galaxy 42 extinct mammal 42 regolith 42 Optical Gravitational Lensing Experiment 42 Voyager spacecraft 42 Scheila 42 comet Wild 42 CoRoT 7b 42 Cassini Huygens spacecraft 42 volcanic activity 42 Geminid 42 galaxy M# [001] 42 supercontinent 42 SN #C 42 Earth crust 42 telescopic observations 42 galaxy 42 Galaxy Evolution 42 earth crust 42 particles 42 dinosaur skeletons 42 retrograde orbit 42 Galilean satellites 42 Wassonite 42 radiocarbon dated 42 Neanderthal fossils 42 inner asteroid belt 42 YU# 42 WD5 42 Martian rovers 42 Wolf Rayet stars 42 astrophysicists 42 Cosmic ray 42 Saturn moon Enceladus 42 micrometeoroid 42 planets orbiting distant 42 HiRISE image 42 Comet 9P/Tempel 1 42 Tunguska asteroid 42 Beta Pictoris 42 QQ# 42 sundog 42 Amateur astronomers 42 dinosaur eggs 42 dinosaur 42 Giovanni Cassini 42 Nazca lines 42 earliest hominid 42 prehistoric creature 42 tiny speck 42 protoplanetary 42 Baptistina 42 Fossil hunters 42 Martian surface 42 rocky terrestrial planets 42 magnetars 42 prehistoric fossils 42 comet tail 42 rockhound 42 Lake Cheko 42 Buzzard Coulee 42 Meridiani Planum 42 amateur astronomers 42 Valles Marineris 42 fossilized 42 exosphere 42 orb 42 silicate minerals 42 transiting planets 42 ejecta plume 42 jarosite 42 supermassive black hole 42 geode 42 lunar equator 42 woolly mammoth 42 Hipparchus 42 planet Gliese #c 42 Phaethon 42 duck billed hadrosaur 42 GRBs 42 trans Neptunian objects 42 William Bottke 42 protoplanetary disk 42 mineralogist 42 antimatter particles 42 solar flares 42 radial velocity 42 X ray emission 42 sulfur isotopes 42 comet Tempel Tuttle 42 dino bones 42 Gigantoraptor 42 UFO 42 proto galaxies 42 planet gravitational tug 42 Antarctic meteorites 42 terrestrial planets 42 Virgo cluster 42 hematite 42 asteroid belt 42 Lake Vostok 42 Astrophysicists 42 geoglyphs 42 meteoritic material 42 planet Nibiru 41 mastodon skull 41 supernova remnant Cassiopeia 41 millisecond pulsar 41 fossilized feces 41 Keck Telescope 41 fossilized footprints 41 aurorae 41 moon Titan 41 supervolcanoes 41 HL Tau 41 AGNs 41 plate tectonics 41 peridotite 41 Arches Cluster 41 distant galaxy clusters 41 proto planetary disk 41 Prairie Meteorite 41 Anglo Saxon archeology 41 Triceratops skull 41 grapefruit sized 41 Kuiper belt objects 41 interstellar cloud 41 globular cluster 41 Tempel 1 41 Astrophysical Institute 41 moonlet 41 telescopes 41 carnivorous dinosaur 41 distant galaxies 41 palaeontologist 41 cosmic cannibal 41 spherically symmetric 41 protoplanetary disks 41 warned Trudy Wohlleben 41 Fossilized bones 41 magnetite crystals 41 gray hematite 41 Earth 41 CoRoT #b 41 Saturn Cassini 41 HD #b [001] 41 rocks 41 Comet Tempel 1 41 galactic alignment 41 superheavy elements 41 matter antimatter asymmetry 41 martian atmosphere 41 Observatory telescope 41 Tunguska Event 41 galaxy M# [002] 41 basalt volcanic 41 basaltic magma 41 ichthyosaur 41 triceratops skull 41 stalagmite 41 corundum 41 dinosaur bones unearthed 41 moondust 41 hydroxyl molecules 41 mammoth tusks 41 basaltic rocks 41 accretion disk 41 supernovas 41 cosmic microwave background 41 isotopic ratios 41 chondrules 41 hydrated minerals 41 gravitational waves 41 volcanic basalt 41 astrobiological 41 neutralinos 41 Mandushev 41 hominid species 41 Huygens spacecraft 41 interstellar dust samples 41 Earth Asteroid 41 Voorwerp 41 exoplanets orbiting 41 circular particle accelerator 41 Ring Nebula 41 faint galaxies 41 RHESSI 41 geodes 41 boulder 41 Cygnus X 41 evaporite deposits 41 constellation Cassiopeia 41 Boslough 41 planet WASP #b 41 Gamburtsev 41 V# Mon 41 Cosmologists 41 cenospheres 41 orbital debris 41 infall 41 Anglo Saxon treasure 41 AU Mic 41 planetary embryos 41 planets astronomers 41 quartz grains 41 Quadrantid meteor shower 41 radiotelescope 41 microscopic fossils 41 Very Large Array 41 planetoids 41 Permian Triassic extinction 41 Orionid 41 opal 41 distant quasar 41 basaltic lava 41 glaciations 41 permanently shadowed 41 Falcarius utahensis 41 optical telescope 41 lunar dust 41 baryon 41 quasars 41 Mount Mazama 41 Opportunity rover 41 hadrosaur 41 mammal fossils 41 sedimentary layers 41 Cenozoic Era 41 atomic nucleus 41 WMAP satellite 41 Faulkes Telescope 41 Nikku Madhusudhan 41 circumstellar disk 41 energetic cosmic rays 41 demoted Pluto 41 Srinivasan Nageswaran whose 41 paleomagnetic 41 mammoth tusk 41 comet Tempel 1 41 metamorphic rock 41 SN#A 41 sunlike star 41 duckbilled dinosaur 41 Dinosaur Cove 41 dinosaur dung 40 Columbian mammoth 40 Yellowstone Caldera 40 Asteroids 40 marine reptile 40 quasar 40 microlensing 40 Phoebe orbits 40 conclusions NASA Astrobiology 40 planetary nebulae 40 Noachian era 40 Ordovician extinction 40 stellar occultations 40 fluid inclusions 40 Solar System 40 flood basalts 40 archeologists 40 Mars 40 Machholz 40 nebular 40 Shackleton crater 40 CMB radiation 40 paleontological dig 40 Milky Way 40 Neanderthal teeth 40 # Apophis 40 infrared observatory 40 agates 40 Nibiru 40 Charon Pluto 40 Bonneville Crater 40 Martian landscape 40 feathered dinosaurs 40 Cumbre Vieja 40 sulfate salts 40 distant quasars 40 TW Hydrae 40 Earth asteroids NEAs 40 paleontologists 40 Arabia Terra 40 Edmontosaurus named 40 silcrete 40 SL9 40 Kuiper Belt objects 40 rock outcrop 40 Spitzer Space Telescope 40 skywatcher 40 permanently shadowed crater 40 carbon cenospheres 40 Red Rectangle 40 subduction zone quake 40 planetary nebula 40 cosmic microwave radiation 40 WISE telescope 40 blue supergiant 40 cinder cones 40 lunar craters 40 called gray hematite 40 golfball sized hail 40 mud volcanoes 40 Comet Encke 40 Geminids 40 laboratory Skylab 40 Surtsey 40 interstellar medium 40 elliptical galaxies 40 KT extinction 40 SNR #-#.# 40 presolar grains 40 gamma ray burst GRB 40 antimatter 40 Pieter van Dokkum 40 Pluto Charon 40 Comet Machholz 40 astrobiology 40 basaltic 40 moon Mimas 40 prehistoric crocodile 40 Saturnian moons 40 Meteoritical Society 40 gemstone 40 epithermal gold deposit 40 fossils unearthed 40 Apollo missions 40 Martian atmosphere 40 collisional 40 Geologically 40 airbursts 40 strangelets 40 colliding asteroids 40 volcanic 40 Mini TES 40 Snowball Earth 40 planets orbiting stars 40 meteoroid impacts 40 Comet Swift 40 Planetary Science Institute 40 binary asteroid 40 primordial ingredients 40 galactic collisions 40 T.rex 40 exoplanets 40 Deep Impact probe 40 prehistoric artifacts 40 kaons 40 T. rex 40 gravitational tides 40 martian surface 40 paleontologist 40 Heasler 40 Petermann Glacier 40 electron neutrino 40 Jedicke 40 Carancas 40 supernovae 40 hottest chile pepper 40 cosmic magnifying glass 40 observatory 40 Mount Tambora 40 Arecibo Observatory 40 dinosaurs 40 Geminids meteor shower 40 Bramley Murton 40 astronomical phenomena 40 trilobite fossils 40 geologists 40 Tarantula Nebula 40 Roswell UFO 40 Vesuvius eruption 40 magmatic 40 particle smasher 40 fossilized teeth 40 shadow biosphere 40 igneous 40 volcano erupting 40 Stardust spacecraft 40 Comet Hartley 2 40 brown dwarfs 40 tusk 40 Type 1a supernova 40 specimen 40 Martian terrain 40 LCROSS spacecraft 40 cosmic dust 40 prebiotic molecules 40 Cassini flyby 40 interstellar molecules 40 Treasure hunters 40 Comet Tempel Tuttle 40 Enceladus 40 solar corona 40 chert 40 Comet Lulin 40 Corot 9b 40 Gravitational waves 40 gravitational microlensing 40 inch refracting telescope 40 Civil War cannonball 40 maser emission 40 galaxy NGC 40 Planetary scientists 40 brown dwarf 40 sunlike stars 40 Laurasia 40 trilobite 40 Martian craters 40 Avishay Gal Yam 40 element osmium 40 supermoon 40 sauropod dinosaur 40 moon Io 40 gravitational interactions 40 panspermia 40 journal Geology 40 COROT 40 smoothest flattest spot 40 geysers erupting 40 Jurassic Period 40 Ellesmere Island 40 basalts 40 atomic nuclei 40 Neanderthals Homo neanderthalensis 40 Cometary 40 Vredefort 40 HiRISE images 40 isotopic composition 40 pulsars 40 protons collide 40 NASA Stardust spacecraft 40 Comet Holmes 40 volcanoes 40 mummified dinosaur 40 debris 39 Gneiss 39 Neutron stars 39 Yellowstone caldera 39 ultraluminous galaxy 39 NASA Lunar Prospector 39 Pan STARRS PS1 telescope 39 authors Anne Verbiscer 39 Andromeda XII 39 Saturn magnetosphere 39 spiral galaxy NGC 39 EF2 tornado 39 anorthosite 39 tiny meteoroids 39 excavated crater 39 ESA XMM Newton 39 HiRISE 39 Burgess Shale 39 astronomical alignments 39 hominid footprints 39 isotopic compositions 39 azurite 39 Martian microbes 39 supernova SN 39 allosaurus 39 Io volcanoes 39 MMT Observatory 39 smallest exoplanets 39 meteor streaking 39 optical telescopes 39 muons 39 Wide Angle Search 39 Gliese #e 39 ion microprobe 39 gamma ray radiation 39 supermassive stars 39 stratovolcano 39 cantaloupe sized 39 Submillimeter Array 39 Saturn outermost ring 39 binary quasar 39 tyrannosaurus rex 39 tyrannosaur 39 silicon monoxide 39 extrasolar planetary 39 radial velocity method 39 Keck telescope 39 astronomy 39 Spiro Mounds 39 Venusian atmosphere 39 Mars Odyssey spacecraft 39 millisecond pulsars 39 astronomer Ptolemy 39 submarine volcanoes 39 OGLE 39 moon 39 pygmy tarsier 39 neighboring Andromeda galaxy 39 orbiting Cassini spacecraft 39 Cassini imaging 39 necked plesiosaur 39 reionization 39 pterosaur 39 Titan Saturn 39 silicate rocks 39 Kensington Runestone 39 crocodile fossils 39 dwarf planet 39 spinels 39 fireball 39 mineralogical composition 39 jovian 39 XMM Newton satellite 39 eclipsing binary 39 golfball size 39 Hot Jupiters 39 Gusev Crater 39 megathrust earthquake 39 Apatosaurus 39 reentry capsule 39 Caloris 39 Geologists 39 Linheraptor 39 mosasaur 39 galactic mergers 39 HiRISE camera 39 potentially habitable 39 Impact Crater 39 magmas 39 Saturnian moon Titan 39 relativistic jets 39 sub glacial lakes 39 glaciation 39 H. floresiensis 39 Higgs Boson 39 planet magnetosphere 39 planetary nebulas 39 lava tubes 39 Type Ia 39 dimming starlight 39 Doppler measurements 39 interstellar distances 39 Siding Spring 39 Deep Impact comet 39 beryl