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(Click for frequent words.) 59 isotopic ratios 59 primitive meteorites 58 silicate grains 58 olivine crystals 58 silicate dust 57 interstellar dust particles 57 isotope composition 56 cometary material 56 crystallites 56 isotopic compositions 56 sulfur isotopes 56 comet dust 56 solar nebula 56 elemental composition 56 sunlike stars 56 Polycyclic aromatic hydrocarbons 55 lunar meteorites 55 interstellar dust grains 55 multi celled 55 meteoritic material 55 stony meteorites 55 hydrated silica 55 protoplanet 55 concretions 54 windblown sand 54 presolar grains 54 micrometres thick 54 P/# A2 54 protoplanetary discs 54 interstellar grains 54 stromatolite 54 circumstellar 54 chondritic 54 tiny specks 54 protoplanetary 54 planktonic foraminifera 54 Martian meteorite 54 intrinsic brightness 54 Tagish Lake meteorite 54 silicate rocks 54 W boson 54 Tiny particles 54 cometary dust 54 icy comets 53 circumstellar disk 53 coral skeletons 53 fossilized coral 53 interstellar cloud 53 CAIs 53 silica spheres 53 baryonic 53 planets asteroids 53 micro meteorites 53 exo planet 53 Murchison meteorite 53 carbonaceous chondrites 53 single celled algae 53 weakly interacting 53 tholins 53 carbon cenospheres 53 abundances 53 zircon crystal 53 isotope ratios 53 Pollen grains 53 AB Aurigae 53 noble gases 53 Fomalhaut b 53 isotopic signature 52 comets asteroids 52 elemental abundances 52 spectroscopic analysis 52 BIFs 52 silicon monoxide 52 Neutron stars 52 hydrogen isotopes 52 isotopic composition 52 carbonate globules 52 X ray binaries 52 microscopic 52 martian rocks 52 nanosized 52 oxygen isotope ratios 52 lunar soil 52 silica nanoparticles 52 microcrystals 52 spatially resolved 52 zinc sulfide 52 carbon isotope ratios 52 silicate mantle 52 radioactive decay 52 chemical composition 52 meteorite fragments 52 ferric oxides 52 ALH# 52 Cosmic Microwave Background CMB 52 spinels 52 magnetite crystals 52 osmium 52 Martian meteorites 52 chondritic meteorites 52 crystalline silicates 52 micrometre 52 strontium isotope 52 Zolensky 52 Globular clusters 52 COROT 7b 51 BP Piscium 51 nebular 51 quartz grains 51 silicate minerals 51 VY Canis Majoris 51 chondrites 51 sediments deposited 51 comet Tempel Tuttle 51 Epsilon Eridani 51 filamentary structure 51 element boron 51 ellipsoids 51 lunar crust 51 Raman spectra 51 interstellar dust clouds 51 Cosmic Microwave Background 51 Bug Nebula 51 microplastics 51 zircons 51 carbonaceous chondrite 51 distant supernovae 51 magnesium silicate 51 Martian dust 51 D. radiodurans 51 volcanic basalt 51 spectroscopically 51 Veil Nebula 51 tiny flecks 51 protostars 51 dense clumps 51 diamagnetic 51 proto planetary disk 51 presolar 51 ostracods 51 calcite crystals 51 YORP effect 51 solidified lava 51 perfectly spherical 51 electrons orbiting 51 photochemically 51 protoplanets 51 cenospheres 51 moondust 51 chondrules 51 dirty snowballs 51 Kuiper Belt Objects 51 hematite mineral 51 silicate mineral 51 electron neutrinos 51 atmospheric opacity 51 basaltic rocks 51 hydroxyl radical 51 globulars 51 faint galaxies 50 Kepler #b 50 dielectric permittivity 50 antineutrinos 50 single celled microorganisms 50 Fermi telescope 50 interstellar clouds 50 albedo reflectivity 50 pyrope garnet 50 permanently shadowed craters 50 olivines 50 galactic disk 50 G#.# +#.# 50 spherules 50 spectral measurements 50 plagioclase 50 smallest exoplanet 50 amorphous silica 50 uppermost layer 50 Baptistina 50 PM#.# particles 50 NEAs 50 olivine 50 Planetary nebulae 50 seafloor sediments 50 insolubles 50 Doppler measurements 50 electrons protons 50 pediment gravels 50 IR spectra 50 silicates 50 Young modulus 50 graphite whiskers 50 circumstellar disks 50 stony meteorite 50 neutralinos 50 iridium layer 50 planetesimals 50 zircon crystals 50 Earthly contamination 50 phyllosilicate 50 ytterbium 50 meteorite bombardment 50 radioactive nuclei 50 seabed sediments 50 particles 50 MG J# +# 50 silicate crystals 50 martian meteorites 50 comet nucleus 50 pollen particles 50 graphitic carbon 50 Comet Tempel Tuttle 50 cubic centimeter 50 carbon isotopes 50 protoplanetary disk 50 Coma cluster 50 hydroxyl molecules 50 nitrogen isotope 50 B meson 50 micrometre sized 50 antihelium 50 microscopic particle 49 Dwarf galaxies 49 peridotitic 49 Gravitational waves 49 APXS 49 chlorine atom 49 Magnetars 49 cirrus cloud 49 helium nuclei 49 neutron spectrometer 49 oxygen isotopes 49 Kuiper belt objects 49 mu m 49 mineral apatite 49 goethite 49 moonlet 49 conodonts 49 phyllosilicates 49 phosphorus atom 49 Neoproterozoic 49 tungsten isotopes 49 kaons 49 Wassonite 49 helium atom 49 Comet Halley 49 Siple Dome 49 gamma rays emitted 49 Red Rectangle 49 pollutant particles 49 basalt volcanic 49 interplanetary dust 49 nanohorns 49 ppbv 49 carbonaceous material 49 teragrams 49 Fe Mn 49 unshelled peanut 49 electron orbitals 49 planet Gliese #c 49 electronvolts 49 carbonate minerals 49 antiquarks 49 Cretaceous Paleogene boundary 49 skeletal fragments 49 proto galaxies 49 Lyman alpha 49 olivine macrocrysts 49 g cc 49 Bulk density 49 dynamical evolution 49 gold nanoclusters 49 cadmium sulfide 49 exo planets 49 spacecraft flyby 49 polar mesospheric clouds 49 electron volts eV 49 Coma Cluster 49 dinosaur skulls 49 sulfate aerosol 49 trans Neptunian objects 49 Caloris 49 fragments 49 HL Tau 49 Bok globules 49 moons orbiting 49 Saturn auroras 49 multi walled nanotubes 49 picogram 49 lapilli 49 micrometres 49 Radiometric dating 49 type Ia supernova 49 subsurface ocean 49 yardangs 49 submicrometer 49 RRATs 48 moonlets 48 sterile neutrino 48 electrons positrons 48 unicellular algae 48 meteoritic 48 cosmic microwave background 48 phenanthrene 48 dust mote 48 fossilized pollen 48 cyanogen poisonous gas 48 proplyds 48 trimers 48 Muons 48 pinhead sized 48 uncompacted 48 octahedron 48 asteroids orbiting 48 Semiconducting 48 WMAP satellite 48 isotope fractionation 48 crustal rocks 48 Henize #-# 48 icosahedral 48 observable universe 48 coprolite 48 .3 microns 48 comet McNaught 48 geoneutrinos 48 Saturn rings 48 SNR #-#.# 48 BLG #Lb 48 ferrous oxide 48 micrometer sized 48 aluminosilicate 48 prolate 48 halite 48 Martian rocks 48 comets orbiting 48 mineralogical composition 48 jovian 48 SN #A 48 planemos 48 supernova explosion 48 fecal pellets 48 mollusk shells 48 comet nuclei 48 supernova explosions 48 ionized particles 48 oxygen isotope 48 KBOs 48 supercontinents 48 AU Mic 48 komatiites 48 Calcium carbonate 48 planets moons 48 magnesium sodium potassium 48 hydrated minerals 48 Chlamydomonas reinhardtii 48 comet 48 galaxy redshift 48 captured interstellar dust 48 emit X rays 48 red supergiants 48 silicate 48 inorganic salts 48 cometary impacts 48 specular reflection 48 Hydrogen atoms 48 superheavy elements 48 electron orbits 48 Oort cloud 48 alpha particles 48 radiocarbon analysis 48 titanium zirconium 48 isotopic 48 Spitzer infrared spectrograph 48 protoplanetary disks 48 HARPS instrument 48 microforces 48 absorption spectra 48 planetary embryos 48 millisecond pulsars 48 TNOs 48 microcapsules containing 48 extrasolar 48 spontaneous fission 48 iron sulfate 48 atmospheric aerosols 48 nanometers billionths 48 carbonaceous chondrite meteorites 48 nanodroplets 48 inner Oort Cloud 48 needlelike 48 pigment particles 48 Anthony Remijan 48 Sumbawa Island under 48 sedimentary layers 48 gravitationally lensed 48 nitrogen isotopes 48 Earthlike planet 48 sulfide nanoparticles 48 eclogitic 48 hexagonal lattice 48 diffraction patterns 48 primordial ingredients 48 metallicity 48 cited krypton strontium 48 sphericity 48 ramidus 48 exoplanets orbiting 48 galactic clusters 48 claystone 48 spheroidal 48 aragonite 48 spectroscope 48 spherical particles 48 CoRoT #b 48 Corot 9b 48 olivine rich 48 meteorites 48 neutrino mass 48 lipofuscin 48 Earthlike planets 48 backscattering 48 IRC +# 48 forams 48 nanoprobes 47 airbursts 47 sulfate minerals 47 airborne pollutant 47 ionized hydrogen 47 crystallins 47 inorganic mercury 47 smallest extrasolar planet 47 lepton 47 Trifid Nebula 47 calcium fluoride 47 speleothems 47 magma ocean 47 Candor Chasma 47 asteroids comets 47 olivine mineral 47 globular clusters 47 micrometer scale 47 robotic Stardust spacecraft 47 gravitational tugs 47 icy moons 47 germanium antimony 47 ultraviolet wavelengths 47 fossilized fragments 47 planetary nebulae 47 polyaromatic hydrocarbons 47 bacterial decomposition 47 neutron radiation 47 grayish white 47 C# fullerenes 47 sheet Summerhayes 47 particles emitted 47 chlorine monoxide 47 microscopic creatures 47 antineutrino 47 Comet Holmes 47 helium atoms 47 strange quark 47 Beneficial nematodes 47 solar neutrinos 47 airglow 47 fuzzy halo 47 aerosol particles 47 Carboniferous Period 47 feldspars 47 electrons behave 47 cyanogen 47 fossilized bone 47 spectral signatures 47 paraffin embedded tissue 47 planetesimal 47 atmospheric circulations 47 sulfate aerosols 47 Ontario Lacus 47 glows brightly 47 Carbonaceous 47 carcinogenic polycyclic aromatic hydrocarbons 47 planets comets 47 Cambrian Period 47 AGNs 47 argon atoms 47 pentacene molecule 47 sedimentary deposits 47 Ultraviolet radiation 47 Nanopores 47 fossilized creatures 47 CdSe 47 GJ#b 47 seafloor sediment 47 nacre 47 moon gravitational pull 47 WASP #b 47 filamentary 47 atoms 47 fossilisation 47 alkali metal 47 Eagle Nebula 47 chrome diopsides 47 organic molecules 47 GQ Lupi 47 mineral olivine 47 spinal cysts 47 tiny single celled 47 crystalline solids 47 morphological evolution 47 glow brightly 47 meteoroids 47 proton antiproton collisions 47 spicule 47 colloidal crystals 47 baryons 47 nuclides 47 X ray spectrometer 47 Higgs bosons 47 planet HD #b 47 crinoid 47 supersymmetric particles 47 Carina Nebula 47 coccolithophores 47 crystal lattices 47 radiocarbon dated 47 chalky substance 47 electron density 47 silicon atoms 47 neodymium Nd 47 mineral hematite 47 CMB radiation 47 type Ia supernovae 47 silica particles 47 planetary surfaces 47 aqueous environments 47 electron affinities 47 Type Ia supernovas 47 outermost layers 47 dishwashing sponge 47 nanotubes nanowires 47 1μm 47 microns 47 naturally occurring mineral 47 nanometric 47 wettability 47 HiRISE image 47 dust motes 47 green alga Chlamydomonas 47 geochronology 47 nanoprobe 47 Ordovician extinction 47 isotopic signatures 47 radiometric dating 47 Carbon dioxide CO2 47 dynamical processes 47 pallasite 47 pollen spores 47 lain undisturbed 47 homochirality 47 filamentary structures 47 Kuiper belt object 47 supernova remnants 47 Jupiter magnetosphere 47 planktonic algae 47 microdroplets 47 salt crystals 47 crystallite 47 post perovskite 47 manganese oxide 47 element osmium 47 ejecta 47 spectral signature 47 non baryonic 47 impactors 47 Cr#O# 47 dust particles 47 moon Mab 47 Milky Way halo 47 metamaterial structures 47 Beta Pictoris 47 infrared spectral 47 sulfur isotope 47 NASA Wilkinson Microwave 47 Zeta Ophiuchi 47 particle sizes 47 Sedimentary rocks 47 NASA Voyager spacecraft 47 neutron activation 47 lakebed sediments 47 ultraluminous galaxy 47 galaxy M# [002] 47 thermally activated 47 reflection nebula 47 merging galaxies 47 Toba eruption 47 planet magnetosphere 47 IRAS 4B 47 Scientists theorized 46 Cometary 46 Evolution Explorer 46 asteroidal 46 distant quasar 46 Peony nebula star 46 supernova SN 46 comets 46 multicellular animals 46 nucleobases 46 Tevatron experiments 46 planets orbits 46 dopant atoms 46 thermodynamic stability 46 calcite 46 ultraviolet radiation emitted 46 ionise 46 planetary nebula 46 nanosized particles 46 shadowy craters 46 exosphere 46 arcsecond 46 Nikku Madhusudhan 46 GJ #b [002] 46 microscopic bubbles 46 nanodiamonds 46 Epsilon Aurigae 46 Fullerenes 46 porous silica 46 SDSS II 46 comet particles 46 microscopic crystals 46 fossilized dung 46 beta cyclodextrin 46 albumen 46 malachite mineralization 46 nanoscopic 46 radiocarbon 46 proteins lipids 46 interstellar dust 46 Confuciusornis 46 nanogels 46 californium 46 eclipsing binary 46 planet Gliese #g 46 faraway galaxies 46 Noachian era 46 infall 46 dinosaur specimens 46 tiny particles 46 leachates 46 macroscopically 46 inorganic ions 46 Earthlike 46 ultramafic intrusives 46 fossilized shells 46 Cassini ion 46 coated nanoparticles 46 assumed planets circling 46 otoliths 46 spherically symmetric 46 baryon 46 micrometers 46 electron microprobe 46 KH #D 46 nanosize 46 Stadermann 46 interstellar particles 46 seafloors 46 shear modulus 46 Nitrogen dioxide 46 polarimetry 46 endospores 46 multicellular creatures 46 Swift Tuttle 46 chondrite 46 samarium 46 micrograph 46 tungsten oxide 46 spectral fingerprints 46 polar craters 46 phytoliths 46 placental mammals 46 GPa 46 methyl cyanide 46 hollow cylinders 46 X ray binary 46 Aram Chaos 46 fungal hyphae 46 J# +# [002] 46 igneous rock 46 Trojan asteroids 46 nanoporous 46 RS Ophiuchi 46 bryozoan 46 Saturn outermost ring 46 ^ sup -1 46 lithium oxide 46 neutralino 46 polygonal shapes 46 electrical conductance 46 carbonyl sulfide 46 IRAS #-# 46 pyroxene 46 cobalt atom 46 BBs lodged 46 oxidized mercury 46 tetrapods evolved 46 photon energies 46 t/m3 46 Halley comet 46 earth crust 46 ferric iron 46 rotating neutron 46 curium 46 nanometers thick 46 absorbs ultraviolet 46 polymorphs 46 silica 46 Mercury magnetosphere 46 collisional 46 potassium atoms 46 microfossils 46 infrared spectra 46 tau neutrinos 46 Asbestos fibers 46 gluon 46 carbon spherules 46 montmorillonite 46 Titan Saturn 46 nanoclusters 46 liquid xenon 46 tetroxide 46 SN Ia 46 chitons 46 marine sediments 46 comet tail 46 ellipsoid 46 microbial organisms 46 nematode worm 46 Permian Triassic extinction 46 microdiamonds 46 Antennae Galaxies 46 scanning electron micrograph 46 agarose gel electrophoresis 46 Radiocarbon 46 yttrium oxide 46 Siberian mammoths 46 Phanerozoic 46 ionised 46 Studying comets 46 polycyclic aromatic hydrocarbons 46 KT boundary 46 photomicrograph 46 PrPSc 46 baryonic matter 46 barred spiral galaxy 46 Comet Encke 46 Radiocarbon dating 46 superdense 46 underwater volcanoes 46 Rosette Nebula 46 telescopic observations 46 isotopic analysis 46 Caesium 46 Microscopic 46 Oort Cloud 46 volcanic moon Io 46 duck billed hadrosaur 46 microfossil 46 iron arsenide 46 dense LDL 46 photochemical reactions 46 fluorescence spectra 46 dusty disks 46 Anisotropy Probe 46 spectral fingerprint 46 reentry capsule 46 Upsilon Andromedae b 46 rotifer 46 Tycho supernova 46 calcium sulphate 46 #x magnification [002] 46 Tunguska Siberia 46 nanoscale pores 46 muscovite 46 quantum dots QDs 46 RNA fragments 46 planetary nebulas 46 nanopatterned 46 earths surface 46 chemically processed 46 mammal fossils 46 photoionization 46 acidity pH 46 upper troposphere 46 skeletons skulls 46 nematode worm Caenorhabditis elegans 46 zircon grains 46 anthropogenic carbon dioxide 46 gaseous pollutants 46 pollen grains 46 waxy coating 46 Pluto Charon 46 downy feathers 46 encrustation 46 Genyornis 46 journal Meteoritics 46 jarosite 46 TiO2 nanoparticles 46 meteoroid impacts 46 sunlike star 46 zinc oxide nanoparticles 46 gray hematite 46 gravitationally bound 46 silcrete 46 single walled nanotubes 45 volatilized 45 dichromate 45 Gusev crater 45 unicellular organisms 45 JILA scientists 45 apatite 45 proteinaceous 45 X rays gamma rays 45 Mercury exosphere 45 emittance 45 nanoliters 45 Hot Jupiters 45 SN #gy 45 Michelson interferometer 45 fatty acids amino acids 45 radial velocity technique 45 Bosons 45 allotrope 45 Allende meteorite 45 protoplanetary disc 45 primitive organisms 45 micron thick 45 earths crust 45 carbon monoxide nitrogen oxides 45 PCBs DDT 45 Amyloid plaques 45 seawater pH 45 TrES 4 45 Butterfly Nebula 45 lobate scarps 45 cm ^ sup 45 vanadium oxide 45 fossilized dinosaur dung 45 astronomical objects 45 Tianyulong 45 amyloid peptides 45 millisecond pulsar 45 microlitre 45 nucleosynthesis 45 coral polyp 45 nebulae 45 SNARE complex 45 Mesozoic mammals 45 soluble proteins 45 Cosmologists 45 dimming starlight 45 interferogram 45 pinpoints Lopez Alegria 45 Particulate emissions 45 melt inclusions 45 antiparticle 45 mussels barnacles 45 oxidized iron 45 radioactive thorium 45 cosmic neutrinos 45 Ring Nebula 45 unconventional superconductivity 45 Brine shrimp 45 Anisotropy Probe WMAP 45 polymer beads 45 photoemission 45 submicroscopic 45 galaxy M# [001] 45 microscopic spores 45 PAHs polycyclic aromatic hydrocarbons 45 lavas 45 chemically reactive 45 basaltic lava 45 tectonic plate movements 45 tuffaceous rocks 45 KT extinction 45 fluorescent nanoparticles 45 cratons 45 metazoan 45 rusticles 45 Laetoli Tanzania 45 ejecta blanket 45 antimatter particles 45 circular dichroism 45 Mojzsis 45 Fossilized 45 mesons 45 Upsilon Andromedae 45 Supernovae 45 Methyl mercury 45 particles WIMPs 45 Stromatolites 45 unfertilised 45 Entire forests 45 micrometeorite impacts 45 arsenic cadmium mercury 45 Kuiper Belt Object 45 comet Wild 45 ε 45 centimeter wingspan 45 solar corona 45 Carbon nanotubes CNTs 45 nonillion 45 turbidites 45 otolith 45 barium titanate 45 humic 45 astrophysical objects 45 juvenile Columbian mammoth 45 overlying layers 45 Nanoscopic 45 Prochlorococcus 45 hafnium oxide 45 heavily cratered 45 flood basalts 45 sievert 45 graphene membranes 45 Bose Einstein condensation 45 lepidolite 45 airgel 45 supergiant stars 45 ejecta plume 45 fig. S2 45 nanospheres 45 Laurasia 45 asthenosphere 45 sea scorpions 45 Tooth enamel 45 heterogeneities 45 Diatoms 45 magnetic polarity 45 eggshell fragments 45 ozone particulate matter 45 meteor impacts 45 chlorophyll molecules 45 planets orbiting distant 45 quartz crystals 45 Quadrantid meteor shower 45 sulfurs 45 magnesium ion 45 WISE telescope 45 RQ# 45 HIP #b 45 granite gneiss 45 dissolved salts 45 fossilization 45 Cabeus crater 45 gaseous planets 45 Mössbauer 45 ringlike 45 Cat Paw Nebula 45 hydrodynamic radius 45 luminous galaxies 45 basaltic magma 45 Hair follicles 45 parsec 45 Cancri e 45 pillow lavas 45 axions 45 radar interferometry 45 GeV 45 QQ# 45 gill slits 45 crinoids 45 Ohmoto 45 subatomic 45 acid leached 45 starburst galaxies 45 Ediacara 45 planets atmospheres 45 interstellar medium 45 oxide nanoparticles 45 Zeolites 45 stellar nurseries 45 amalgam dental fillings 45 dwarf galaxy 45 Bose Einstein condensate BEC 45 μS cm 45 multiwalled carbon nanotubes 45 subatomic particles 45 Trifid 45 photons emitted 45 terrestrial mammals 45 scanning electron microscopes 45 yttrium barium copper 45 subducting plate 45 laser irradiation 45 mRNA molecules 45 inhomogeneities 45 XTE J# 45 silicon nanowire