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(Click for frequent words.) 74 oxygen isotope 74 isotope ratios 73 carbon isotopes 68 isotopic composition 67 oxygen isotope ratios 66 nitrogen isotopes 66 isotopic 65 carbon isotope ratios 65 isotopic ratios 64 sulfur isotopes 64 strontium isotope 62 paleomagnetic 62 isotopic compositions 62 sulfur isotope 61 abundances 61 forams 61 isotopic signatures 61 aerosol particles 60 marine sediments 60 CAIs 60 noble gases 60 elemental composition 60 chondrules 60 basaltic rocks 60 chondrites 60 isotope composition 59 interstellar clouds 59 lunar crust 59 primitive meteorites 59 martian meteorites 59 atmospheric aerosols 59 zircons 59 microfossils 58 nucleobases 58 tholins 58 nitrogen isotope 58 solar nebula 58 sedimentary layers 58 hydroxyl molecules 58 cometary material 58 stable isotope 58 spherules 57 carbonate globules 57 cosmic ray flux 57 geochemists 57 phyllosilicates 57 single celled algae 57 isotope fractionation 57 foraminifera 57 ferric oxides 57 spatially resolved 57 lavas 57 chondritic meteorites 57 isotopic signature 57 hydrated minerals 57 relative abundances 57 Dauphas 57 magnetite crystals 57 jarosite 57 seabed sediments 57 chemical composition 56 olivines 56 sediment cores 56 otoliths 56 otolith 56 lake sediments 56 aragonite 56 nitrogen atoms 56 spectroscopic analysis 56 electron density 56 absorption spectra 56 carbonaceous chondrites 56 silicate dust 56 circumstellar 56 trimers 56 chondritic 56 diatoms 56 organic molecules 56 spectral signature 56 antineutrinos 56 spectroscopic measurements 56 Mercury exosphere 56 lunar soil 56 elemental abundances 56 planets atmospheres 56 spectroscopically 56 cryovolcanism 56 Sr Ca 56 intrinsic brightness 56 lunar magma 56 radiocarbon 56 dynamical processes 56 interglacial periods 55 olivine 55 glacial interglacial 55 magma ocean 55 calcite crystals 55 stromatolite 55 hydroxyl 55 nebular 55 micrometre sized 55 isotopic fractionation 55 Raman spectra 55 osmium 55 phyllosilicate 55 Martian meteorites 55 photochemical reactions 55 seafloor sediments 55 stony meteorites 55 olivine crystals 55 Neoproterozoic 55 icy moons 55 binary asteroid 55 planktonic foraminifera 55 igneous rocks 55 isotopic analysis 55 carbon isotope 55 lunar craters 55 morphologies 55 icy comets 55 clathrates 55 phytoliths 55 nuclei 55 electron neutrinos 55 meteoritic 55 concretions 55 magmas 55 periodicities 55 superfluids 55 carbonate minerals 55 crustal thickness 55 sulfate aerosols 54 dynamical evolution 54 tetrapods evolved 54 sedimentary deposits 54 Allende meteorite 54 paleoclimatology 54 mantle plumes 54 photosynthetic organisms 54 ocean sediment cores 54 coral skeletons 54 electrical conductance 54 helium atoms 54 isotherms 54 magnetic monopoles 54 blackbody 54 sediments deposited 54 Mercury magnetosphere 54 extrasolar 54 oxygen isotopic 54 comet nuclei 54 Chlamydomonas reinhardtii 54 asteroidal 54 neutralinos 54 ostracods 54 interstellar dust grains 54 COROT 7b 54 fermion 54 melanosomes 54 terrestrial ecosystems 54 biogeochemical processes 54 weakly interacting 54 paleoclimatic 54 zeolites 54 spectral fingerprints 54 interannual variability 54 speleothems 54 coccolithophores 54 carbonaceous material 54 electrons orbiting 54 hydrogen isotopes 54 Murchison meteorite 54 benthic foraminifera 54 biogenic 54 graphite whiskers 54 aerosol concentrations 54 radiometric dating 54 vibrational modes 53 fossilized pollen 53 carbon spherules 53 spicule 53 gamma rays emitted 53 isotope ratio 53 carbonaceous meteorites 53 adsorbate 53 helium nuclei 53 ultracold atoms 53 spectral signatures 53 Pollen grains 53 phytochrome 53 earthshine 53 AB Aurigae 53 hydrogens 53 volcanic aerosols 53 sterile neutrino 53 volcanic basalt 53 chlorine monoxide 53 turbidites 53 silicates 53 infrared spectra 53 mid latitudes 53 uranium thorium 53 diffraction patterns 53 cosmological distances 53 meteorite fragments 53 forcings 53 Mössbauer 53 planetary magnetospheres 53 baryons 53 KT boundary 53 silicate rocks 53 hydrogen nuclei 53 seafloor sediment 53 exoplanetary systems 53 deuterium 53 metallicity 53 Kuiper belt objects 53 olivine rich 53 kaons 53 Corot 9b 53 meteoritic material 53 neutral mass spectrometer 53 sediments 53 multi celled 53 mineral apatite 53 cometary dust 53 post perovskite 53 interstellar cloud 53 deuterium hydrogen 53 ALH# 53 mantle convection 53 water vapor 53 fluid inclusions 53 microscopic fossils 53 airglow 53 eclogitic 53 isotopic variations 53 climate modellers 53 colloidal crystals 53 element osmium 53 oceanic circulation 53 microplastics 53 U Th 53 neutrino mass 53 histone modifications 53 P. boisei 53 Milankovitch cycles 53 Cancri e 53 geoneutrinos 52 magnetic polarity 52 chromosphere 52 magnetic substorms 52 diatom 52 H. habilis 52 methanogenesis 52 presolar grains 52 pyroxene 52 asthenosphere 52 spatial variability 52 SWNTs 52 ejecta 52 ecotypes 52 Lyman alpha 52 metazoans 52 antiquarks 52 photochemistry 52 cratons 52 paleoclimate 52 magma chambers 52 crystal lattices 52 Computer simulations 52 P/# A2 52 blue supergiant 52 C4 grasses 52 atmospheric methane 52 oxygen atoms 52 conodonts 52 crystallites 52 type Ia supernova 52 KBOs 52 silicate minerals 52 hydrogen helium 52 donor acceptor 52 biosignatures 52 terrestrial vertebrates 52 strange quark 52 distant quasars 52 peridotitic 52 backscattered 52 hydrated silica 52 elliptical galaxies 52 proplyds 52 Prochlorococcus 52 Hot Jupiters 52 atmospheric circulation 52 chlorophyll fluorescence 52 chirality 52 SN#A 52 mineralogical composition 52 A. ramidus 52 Ohmoto 52 GOFs 52 exosphere 52 hydrogen deuterium 52 nanobubbles 52 silicon monoxide 52 electron affinities 52 spectroscopic 52 ab initio calculations 52 eukaryote 52 planetesimals 52 komatiites 52 HARPS instrument 52 lipoprotein particle 52 prokaryotes 52 chlorophyll molecules 52 permanently shadowed craters 52 oxygen isotopic composition 52 hematite mineral 52 phylogenies 52 supernova explosions 52 missing baryons 52 Methane hydrates 52 protoplanetary disks 52 subglacial 52 IRC +# 52 sulfidic 52 W boson 52 carbonaceous chondrite 52 hydroxyl radical 51 carbonyl sulfide 51 atmospheric pollutants 51 mineral olivine 51 solar irradiance 51 planetesimal 51 crustal rocks 51 B meson 51 ionized hydrogen 51 meteor impacts 51 planetary nebulae 51 oxygen atom 51 catalytically active 51 Saturn auroras 51 metazoan 51 neutrino oscillations 51 X ray wavelengths 51 distant supernovae 51 Panderichthys 51 phosphorus atoms 51 Fe Mn 51 melt inclusions 51 quasicrystal 51 Phanerozoic 51 refractive indices 51 methane CH4 51 radiocarbon analysis 51 isotopic fingerprint 51 placental mammals 51 infrared spectroscopy 51 sodium atoms 51 iron arsenide 51 Cepheid variables 51 galaxy redshift 51 methane ethane 51 Hubble observations 51 luminescence dating 51 sedimentological 51 sulphate aerosols 51 basaltic 51 X ray binaries 51 Type 1a supernovae 51 polar vortex 51 phytoplankton biomass 51 helium isotopes 51 sparticles 51 Neogene 51 circumstellar disks 51 photosynthetic pigments 51 climate forcings 51 protoplanetary disk 51 cosmic ray intensity 51 uniformly spaced 51 spherical particles 51 iron oxides 51 hydrogen ions 51 distant quasar 51 Cepheids 51 paleoenvironmental 51 IR spectra 51 calcite 51 martian rocks 51 silicate mantle 51 radiative transfer 51 silicon atoms 51 noctilucent clouds 51 Paranthropus 51 type Ia supernovae 51 anamensis 51 sunlike stars 51 protoplanet 51 prebiotic chemistry 51 carbon dioxide concentrations 51 matter antimatter asymmetry 51 Appy Sluijs 51 dielectric permittivity 51 atmospheric CO 51 trans palmitoleate 51 lithium atoms 51 Mg Ca 51 baryonic 51 phenanthrene 51 HD#b 51 argon atoms 51 δ 51 subsurface ocean 51 interstellar dust clouds 51 YORP effect 51 dipole moment 51 zinc sulfide 51 prominences 51 nanohorns 51 interstellar grains 51 gaseous planets 51 infrared spectral 51 microhabitats 51 spectroscopic techniques 51 iridium layer 51 Martian craters 51 volcanic vents 51 solar minima 50 snail shells 50 fermionic 50 lithosphere 50 Otto Bliesner 50 spherically symmetric 50 electron pairing 50 polarimetry 50 continental crust 50 stellar seismology 50 crinoid 50 antiparticle 50 Willerslev 50 polar craters 50 yttrium barium copper 50 hydrogen atoms 50 brightnesses 50 bryozoans 50 bilayer 50 basalts 50 biominerals 50 sodium potassium 50 mtDNA sequence 50 crystalline silicates 50 spectrometry 50 tektites 50 electron orbitals 50 electron pairs 50 gravitational lenses 50 nitrogen fixation 50 palaeo 50 ostracodes 50 submicrometer 50 specular reflection 50 spectrographs 50 Gravitational waves 50 spinels 50 Dry Valleys 50 Doushantuo Formation 50 microbial mats 50 protonated 50 particle morphology 50 superheavy elements 50 primitive organisms 50 cell nuclei 50 aqueous environments 50 graphene electrons 50 silicate grains 50 temporal variability 50 crystalline solids 50 extragalactic 50 cosmic microwave background 50 Rubisco 50 moonlets 50 organic compounds 50 Diviner 50 magnesium ions 50 circumstellar disk 50 Index NDVI 50 stromatolites 50 ozone O3 50 Climate Experiment GRACE 50 AMSR E 50 lunar craters near 50 sulfur atom 50 Tarduno 50 sunspot cycles 50 downwelling 50 enterotypes 50 microbialites 50 nanoclusters 50 Methane hydrate 50 occultations 50 biosignature 50 spectral fingerprint 50 palaeoclimate 50 chlorine peroxide 50 Cryogenian 50 X ray spectrometer 50 evolutionary relatedness 50 reionization 50 bosonic 50 Radiocarbon 50 tungsten isotopes 50 brachiopods 50 mollusk shells 50 thermal decomposition 50 marine phytoplankton 50 carbon atom 50 superposed 50 NASA Wilkinson Microwave 50 Kounaves 50 red supergiants 50 VY Canis Majoris 50 filamentary 50 ULIRGs 50 dopant atoms 50 albedo 50 Type Ia supernova 50 Mojzsis 50 numerical simulations 50 sulfate aerosol 50 morphological evolution 50 exoplanetary 50 atmospheric moisture 50 situ measurements 50 Schladow 50 particle sizes 50 copper nanowires 50 isotope deuterium 50 animal phyla 50 spheroidal 50 plastids 50 Paranthropus robustus 50 radar interferometry 50 V# Mon 50 globulars 50 formamide 50 photosynthetic bacteria 50 chalcogenides 50 antineutrino 50 dissolved inorganic 50 paleoclimatologists 50 strange quarks 50 NanoSIMS 50 X ray emission 50 ramidus 50 amphioxus 50 tiny single celled 50 Snowball Earth 50 fission fusion 50 left handed isovaline 50 protoplanetary discs 50 quasiparticle 50 Nikku Madhusudhan 50 basalt volcanic 50 isotopic measurements 50 nanogels 50 terrestrial biosphere 50 Ontario Lacus 50 planet HD #b 50 GJ #b [002] 50 Meridiani 50 coprolites 50 spectroscopic technique 50 tropospheric ozone 50 morphological characteristics 50 Bose Einstein condensation 50 baryon 50 rotifer 50 volcanic magma 49 Jupiter moon Io 49 Martian polar 49 OGLE TR #b 49 Seyfert galaxies 49 Trifid Nebula 49 radiocarbon dates 49 layered outcrops 49 biogeochemical 49 helicity 49 diatom species 49 scanning tunneling microscopy 49 Bose Einstein condensates 49 Cenozoic 49 sulfate salts 49 photon fluorescence 49 Ardipithecus 49 Proteobacteria 49 MWCNT 49 Carbon dioxide CO2 49 hydrophobicity 49 braincase 49 ultraviolet wavelengths 49 adsorption isotherms 49 Doppler shifts 49 supercomputer simulations 49 SDSS II 49 oxidized mercury 49 pillow lavas 49 inorganic ions 49 dwarf spheroidal galaxies 49 Milankovitch 49 AGNs 49 dense clumps 49 crystalline structure 49 bony structures 49 atmospheric chemistry 49 planemos 49 Bojowald 49 planets comets 49 Aram Chaos 49 mesoporous 49 ENSO cycle 49 poly L lysine 49 Corot 7b 49 tyrannosaurids 49 nuclides 49 microscopic specks 49 millimeter wavelengths 49 redshifts 49 Type Ia 49 Antennae Galaxies 49 phylogeographic 49 graphene layers 49 tropospheric 49 fig. S1 49 Antarctic Dry Valleys 49 multi decadal 49 distant supernovas 49 polar mesospheric clouds 49 tectonically 49 weak gravitational lensing 49 radiocarbon tests 49 microstructures 49 plagioclase 49 RRATs 49 planetary orbits 49 lensing galaxy 49 supercontinent 49 midlatitude 49 Late Ordovician 49 GJ #b [001] 49 electrons behave 49 boson 49 quasicrystals 49 upper troposphere 49 SNR #-#.# 49 meridional flow 49 collisional 49 Carboniferous Period 49 antihelium 49 moon Enceladus 49 sulphates 49 silicate crystals 49 tetrahedral 49 dye molecules 49 morphologically 49 BP Piscium 49 Paleobiology Database 49 Saturn magnetosphere 49 gold nanoclusters 49 vegetation greenness 49 magnetic excitations 49 heterogeneities 49 heterotrophic 49 Hipparcos 49 hydrated electron 49 Red Rectangle 49 atmospheric carbon dioxide 49 dynamical 49 lobate scarps 49 electron neutrino 49 astrophysical objects 49 longwave radiation 49 mammal lineages 49 climatic variability 49 tropopause 49 odorant molecule 49 inorganic salts 49 microcrystals 49 magnetotactic bacteria 49 diatomic 49 magnetospheric 49 starburst galaxies 49 radiative 49 McMurdo Dry Valleys 49 shadowy craters 49 ilmenites 49 accelerator mass spectrometry 49 microfossil 49 mitochondrial genome 49 planetary nebulas 49 Rignot 49 volcanic lava flows 49 medullary bone 49 magnetic susceptibility 49 quark gluon plasma 49 momenta 49 chimp genomes 49 allotrope 49 radiocarbon dated 49 landforms 49 homochirality 49 radiocarbon dating 49 masers 49 SN #gy 49 tau neutrinos 49 physico chemical 49 helium atom 49 volcanic plumes 49 zodiacal dust 49 Amundsen Sea 49 hydrosphere 49 silicate mineral 49 terrestrial planets 49 Cassini flybys 49 total solar irradiance 49 HD #b [002] 49 Fomalhaut b 49 Si substrate 49 protoplanetary 49 Atlantic Multidecadal Oscillation AMO 49 mammalian fatty acid 49 quantum particle 49 G#.# +#.# 49 magnetisation 49 alkali metal 49 stoichiometry 49 potassium atoms 49 Globular clusters 49 igneous 49 phosphonate 49 volcanism 49 ultracold 49 fluorescent nanoparticles 49 nanopillars 49 anisotropy 49 mesons 49 circularly polarized light 49 nucleon 49 Toba eruption 49 pentacene molecule 49 Wilkinson Microwave Probe 49 nucleosynthesis 49 chrome diopside 49 binary asteroids 49 nucleons 49 amino acids 49 Cosmic Microwave Background 49 variograms 49 Infrared spectroscopy 49 Sahelanthropus 49 Mott insulator 49 moon Mab 49 ellipsoids 49 Ichthyostega 49 APXS 49 inhomogeneities 49 geomorphology 49 graphene membranes 49 infrared spectrometers 49 radar altimetry 49 bioavailable iron 49 deoxygenated hemoglobin 48 fractal patterns 48 limestone xenoliths 48 starquakes 48 deglaciation 48 atoms 48 bacterial decomposition 48 nanostructural 48 pediment gravels 48 Ziurys 48 nitrogen fixers 48 Wilkinson Microwave Anisotropy Probe 48 plesiosaurs 48 A. sediba 48 Kharecha 48 hydroxyl radicals 48 morphological similarities 48 Chlamydomonas 48 SN #A 48 Antarctic Circumpolar Current 48 optical atomic clocks 48 perovskite 48 cave stalagmites 48 Archean Expansion 48 harmful reactive oxygen 48 supercontinents 48 Cambrian Period 48 Oort cloud 48 amino acid asparagine 48 Palaeozoic sedimentary 48 collagen fibrils 48 morphology 48 subglacial lakes 48 cadmium selenide 48 hydrogen isotope 48 gravitational redshift 48 Chicxulub impact 48 placentals 48 topological insulator 48 chiral molecules 48 stellar occultations 48 Martian rocks 48 Acanthostega 48 archaea 48 Carina Nebula 48 high redshift galaxies 48 galactic cosmic rays 48 scanning tunneling microscope STM 48 ancient supercontinent 48 anorthosite 48 physicochemical properties 48 meteorite impacts 48 Cretaceous Paleogene boundary 48 mineralized mafic 48 polypeptide chain 48 mildly alkaline 48 rocky planets 48 ammonia hydrates 48 glaciations 48 amorphous silica 48 Calcium carbonate 48 coastal upwelling 48 radioactive decay 48 accretion disks 48 mtDNA sequences 48 YBCO 48 silica nanoparticles 48 Rugops 48 Cassini ion 48 radiative forcing 48 paleoclimate records 48 neutrino 48 Type Ia supernovae 48 supernova remnants 48 X ray pulses 48 reflectance spectroscopy 48 morphological traits common 48 Veil Nebula 48 rotifers 48 ecoregions 48 spectrographic 48 lanthanides 48 spectroscopic observations 48 zinc ions 48 chromatograms 48 atomic nuclei 48 flavanones 48 intermolecular forces 48 X ray scattering 48 chlorine atom 48 samarium 48 tropical troposphere 48 hexagonal lattice 48 Cassini flyby 48 polaritons 48 chromophore 48 cuprate superconductors 48 sulfate minerals 48 morphological 48 cobalt atoms 48 C#H# 48 ocean basins 48 muon neutrino 48 green alga Chlamydomonas 48 biogeochemical cycling 48 SMBHs 48 equatorial regions 48 faintest galaxies 48 WASP #b 48 fluorimetry 48 aerosols 48 invertebrate animals 48 Surface Composition Spectrometer 48 carbon atoms 48 oppositely charged 48 hydrothermally 48 phenolic compounds 48 supernova remnant 48 polygonal shapes 48 miRNA expression 48 explosive volcanism 48 interglacial period 48 clathrate 48 Henize #-# 48 planet magnetosphere 48 infrared wavelength 48 leachability 48 outer corona 48 nanosized 48 fundamental constants 48 goethite 48 SN #E 48 Venusian atmosphere 48 journal Icarus 48 copper oxide superconductors 48 ARPES 48 boron nitride 48 Fig. 1A 48 Magellanic Stream 48 axions 48 fluorescence quenching 48 Stephan Quintet 48 ribosomal RNA rRNA 48 ejecta blanket 48 protostars 48 merging galaxies 48 ultraviolet radiation emitted 48 sand silt 48 amylopectin 48 gravitational interactions 48 hydrologic cycle 48 diffuse aurora 48 fungal genomes 48 GJ#b 48 Microscopic particles 48 hydroxide ions 48 RNA sequences 48 astrobiologists 48 coralline algae 48 supersolid 48 cirrus 48 chemical abundances 48 thermodynamic properties 48 geological strata 48 super Earths 48 radioactive nuclei 48 single celled organisms 48 desorbed 48 spicules 48 biogeochemical cycles 48 Spiral galaxies 48 chrysocolla 48 Cabeus 48 depositional environment 48 anions 48 quartz grains 48 calcium bicarbonate 48 nitrogenase 48 photosynthesis 48 adatoms 48 chemically reactive 48 CMB radiation 48 Maunder minimum 48 polar caps 48 nanodiamonds 48 Paleoclimate 48 inorganic compounds 48 carbon fluxes 48 Coma Cluster 48 bilayers 48 Anomalocaris 48 tropical latitudes 48 Kepler #b 48 chemosynthetic 48 microstructural 48 vesper bats 48 x ray diffraction 48 magnons 48 geochemistry 48 fluorescence intensity 48 diffusivity 48 yardangs 48 mammalian evolution 48 spinel 48 brittle deformation 48 glacial cycles 48 endospores 48 Kuiper Belt Objects 48 concretion 48 single walled nanotubes 48 protists 48 photosynthetically 48 Theoretical calculations 48 Agulhas Current 48 Paleocene Eocene Thermal Maximum 48 Lapen 48 giant gaseous planets 48 spectroscope 48 multipartite entanglement 48 cosmogenic 48 neutron activation 48 Saturn aurora 48 oceanic crust 48 hydrothermal activity 48 seismograms 48 mass spectroscopy 48 lunar meteorites