Related by context. All words. (Click for frequent words.) 61 mya 61 Mg Ca 60 SNe Ia 59 kyr 59 Neoproterozoic 58 redshift z = 57 z ~ 57 Å -1 57 Carinae 57 Oph 57 z = 56 Mpc 56 chondrites 56 Tertiary Period 56 cm -3 55 Fig. 1A 55 kpc 55 Fe Mg 55 Comet Halley 55 cm -1 55 arcsec 55 Scorpii 55 yr -1 55 planktonic foraminifera 55 Plio Pleistocene 55 keV 54 fig. S1 54 Epsilon Indi 54 Neogene 54 Late Devonian 54 m z 54 meV 54 δ 54 cm -2 54 Eridani 54 interglacial periods 54 luminosities 54 Fig. 1b 54 lavas 54 magmatism 53 metallicity 53 Nd 53 GPa 53 kcal mol 53 nebular 53 ms -1 53 MnO 53 Fig. 2A 53 kg/m3 53 supernova SN 53 Fig. 4A 53 Supplementary Fig 52 Permian Triassic 52 fig. S2 52 Early Cretaceous 52 mu m 52 isotopic compositions 52 solar nebula 52 μm wavelength 52 OGLE TR 52 SiO 2 52 Zr 52 Fig. 3B 52 planetary nebula 52 supernova remnant 52 Fig. 1c 52 Fig. 51 anisotropy 51 GeV 51 J#.# [001] 51 Fig. 4a 51 J# +# [002] 51 Mg Fe 51 spatially resolved 51 Hipparcos 51 SiO 51 Ordovician 51 solar radii 51 mol 51 Fig. 2B 51 Fig. 3b 51 eclipsing binary 51 isotope ratios 51 Figs. 51 Cenozoic 51 interglacials 51 arcseconds 51 volcanism 51 Astronomical Units 50 Epsilon Eridani 50 Fig. 2d 50 -1 ^ 50 oxygen isotope ratios 50 Supplementary Table 50 shear modulus 50 Fig. 1a 50 magnetic polarity 50 arcsecond 50 stromatolite 50 galactic disk 50 ε 50 Cambrian Period 50 XTE J# 50 Fig. 2C 50 Fig. 2c 50 Yb 50 constellation Aries 50 Jurassic Period 50 millisecond pulsar 50 basaltic rocks 50 W#A [001] 50 Cephei 50 MgO 50 Paleocene Eocene Thermal Maximum 50 pyrope garnets 50 redshifts 50 galaxy M# [001] 50 orbitals 50 Carboniferous 50 Fig. 2b 50 Cenozoic Era 50 Triassic Jurassic 50 Beta Pictoris 50 CuO 50 nT 50 2MASS 50 arcminutes 50 Cretaceous Paleogene 49 zircons 49 Permian Period 49 τ 49 tectonically 49 isotope composition 49 fig. S3 49 Late Ordovician 49 carbon isotopes 49 Mesoproterozoic 49 arcmin 49 Eocene 49 glaciation 49 ° N 49 blue supergiant 49 Fig. 3c 49 Phanerozoic 49 Supplementary Figs 49 ramidus 49 galaxy NGC 49 kT 49 Fig. 3A 49 Noachian 49 sunlike stars 49 Moho 49 U Th 49 Cretaceous periods 49 basalts 49 Earth radii 49 fig. 49 Middle Pleistocene 49 azimuthal 49 fig. S6 49 sulfur isotopes 49 protoplanet 49 kDa 49 Ediacaran 49 Ceti 49 Paleocene 49 Oligocene 49 X ray binary 49 ellipsoids 49 Middle Miocene 49 Pegasi 48 glaciations 48 cM 48 Felsic 48 cm ^ sup 48 reionization 48 Triassic Period 48 ref. 48 Antiope 48 RX J# 48 kelvin 48 magnetization 48 Late Miocene 48 AB Aurigae 48 AU Mic 48 Tauri Sb 48 photometry 48 electron density 48 Upsilon Andromedae 48 σ 48 iridium layer 48 sqrt 48 mm ^ sup 48 PO4 48 Fig. 4c 48 Kepler #b 48 velocity dispersion 48 dipole moment 48 mT 48 silicate dust 48 protostar 48 icosahedral 48 martian meteorites 48 Cretaceous Tertiary boundary 48 granitoids 48 adsorbate 48 1μm 48 anorthosite 48 ESO PR 48 UV wavelengths 48 lithosphere 48 Panderichthys 48 Fig. 1E 48 dipolar 48 radiocarbon dates 48 Tau Ceti 48 interglacial period 48 SN #/#/# [002] 48 mV V 48 γ 48 μm diameter 48 supernova remnants 48 Fig. 2E 48 Raman spectra 48 #.#ppm [001] 48 KT boundary 48 mK 48 diene 48 perovskite 48 microquasar 48 Palaeozoic 48 Pliocene 47 Younger Dryas 47 post perovskite 47 constellation Cetus 47 Fig. 1B 47 SN #A 47 ppbv 47 anamensis 47 volcaniclastics 47 Fig. 1C 47 Eta Carinae 47 Aurigae 47 deglaciation 47 dI dV 47 Hadean 47 basaltic 47 #ppm Cu 47 metamorphism 47 photoemission 47 globulars 47 fermion 47 pyroxenite 47 Cretaceous 47 oC 47 Angstroms 47 Precambrian 47 YORP effect 47 G#.# +#.# 47 depositional environment 47 CoRoT 47 radiocarbon 47 remanent 47 Brillouin zone 47 redshift 47 supergiant stars 47 Late Jurassic 47 Permo Triassic 47 geochronology 47 angiosperm 47 Hyakutake 47 Fig. 4b 47 Jupiter magnetosphere 47 atmospheric CO 47 placental mammals 47 microfossils 47 spectra 47 chondrules 47 sulphide veins 47 Cretaceous Period 47 Devonian Period 47 lowermost mantle 47 FeO 47 2n = 47 protoplanets 47 micrograph 47 λ 47 magnetic susceptibility 47 photosphere 47 interstellar dust clouds 47 sapiens 47 Maastrichtian 47 lunar highlands 47 galaxy cluster 47 Doushantuo Formation 47 photon energies 47 Rosette Nebula 47 Fig. 2a 47 η 47 sunspot 47 phyllosilicates 47 W0 47 Late Cretaceous 47 AUs 47 operon 47 weakly interacting 47 Ice Ages 47 Fig. 1e 46 planet orbits 46 Fig. 3C 46 Gneiss 46 ordinary chondrite 46 IR spectra 46 ω 46 antineutrinos 46 Late Triassic 46 NASA Wilkinson Microwave 46 stellar occultations 46 supernova explosion 46 Y Zr 46 holotype 46 interglacial 46 electronvolts 46 spectroscopically 46 Virginis 46 dimer 46 tonalite 46 Â ± 46 constellation Cassiopeia 46 Milky Way halo 46 paleomagnetic 46 Puppis 46 constellation Taurus 46 Lower Proterozoic 46 Wolf Rayet star 46 Cenomanian 46 kDa protein 46 atmospheric CO2 concentrations 46 Red Rectangle 46 valence electron 46 attoseconds 46 silicic 46 Paleogene 46 GALEX 46 baryonic 46 Wolf Rayet stars 46 Cepheid variables 46 sedimentary layers 46 micron wavelengths 46 grabens 46 distant quasar 46 Phylogenetic analysis 46 cluster NGC 46 MeV 46 depositional 46 CoRoT 7b 46 zodiacal dust 46 Ediacara 46 6nm 46 starburst galaxies 46 lobate scarps 46 WASP #b 46 Upper Palaeolithic 46 Quartzite 46 ZrO 2 46 Ring Nebula 46 ≈ 46 Paleozoic era 46 sister taxon 46 planetesimal 46 absorption spectra 46 SNe 46 antiferromagnetic 46 Cr#O# 46 morphologies 46 geological strata 46 globular clusters 46 muon neutrinos 46 cytochrome b 46 Cepheids 46 Cretaceous Tertiary 46 tetragonal 46 cratons 46 SMM J# 46 supergiant star 46 Miocene epoch 46 globular cluster 46 Miocene Epoch 46 Radiocarbon 46 intrinsic brightness 46 orbital resonance 46 Fomalhaut 46 electrons orbiting 46 Eocene Epoch 46 kD 46 constellation Centaurus 46 anthracene 46 dynamical evolution 46 crystallites 46 Trifid Nebula 46 Bullet Cluster 46 HL Tau 46 moonlet 46 Triangulum 46 ejecta 46 mN 46 andesite flows 46 Eq. 46 indel 46 platinum Pt 46 HD# [002] 45 TUNEL 45 Stegodon 45 Breccia Pipe 45 Jupiter moon Io 45 PSR J# 45 type Ia supernova 45 ULIRGs 45 facies 45 BLG #L 45 GRB# 45 isotope fractionation 45 sedimentary deposits 45 atmospheric CO2 concentration 45 ° latitude 45 Carboniferous Period 45 tropospheric 45 lunar crust 45 Toutatis 45 ppm CO2 45 millidarcies 45 femtoseconds 45 Small Magellanic Cloud 45 red supergiant 45 magnetar 45 pegmatite dyke 45 fluorescence intensity 45 metastable 45 SN Ia 45 Molybdenum mineralization 45 Doppler velocity 45 zircon crystals 45 spiral galaxy NGC 45 1nm 45 trilobites 45 phonon 45 fig. S5 45 siderite 45 mM NaCl 45 H. habilis 45 siliceous 45 dwarf galaxy 45 tropical latitudes 45 VLTI 45 high redshift galaxies 45 Cambrian Explosion 45 Hale Bopp 45 RS Ophiuchi 45 meson 45 Cf 45 Cygnus X 45 Fig. 1d 45 Quaternary Science Reviews 45 muscovite 45 monophyletic 45 airglow 45 globular cluster M# 45 parsec 45 S/# [001] 45 ^ sup -1 45 perihelion 45 amino acid residues 45 magnetospheric 45 Aptian 45 Quaternary 45 spherically symmetric 45 asteroidal 45 mitochondrial genomes 45 magmatic 45 Lagoon Nebula 45 Late Heavy Bombardment 45 Archaean 45 Permian extinction 45 Camelopardalis 45 ellipsoid 45 Josephson junction 45 ρ 45 Acanthostega 45 taxa 45 excitation energies 45 S. cerevisiae 45 circumstellar 45 atmospheric methane 45 carbonaceous chondrite 45 faunas 45 isotherms 45 Lyrae 45 #.#nm [001] 45 photoelectron 45 mudstone 45 constellation Andromeda 45 X ray emission 45 radioactive decay 45 Noachian period 45 periodicities 45 gabbros 45 Upper Triassic 45 constellation Virgo 45 sedimentological 45 merging galaxies 45 amphibolite facies 45 interferogram 45 igneous 45 2nm 45 Syrtis Major 45 Wm -2 45 microscopic specks 45 Laurasia 45 NGC# 45 superposed 45 Gondwanaland 45 Tauri 45 Pluto Charon 45 Tharsis 45 sediments deposited 45 C/# [001] 45 Comet Holmes 45 Photometric 45 GQ Lupi 45 logarithmic scale 45 chromitite layers 45 Large Magellanic Cloud 45 calcareous 45 ophiolite 45 Middle Devonian 45 Palaeocene Eocene Thermal Maximum 45 precessing 45 eudialyte 45 V# Sgr 44 Comet Hartley 44 muon 44 Sunspot 44 g cm 44 carbonate minerals 44 KBOs 44 SDS PAGE 44 autocorrelation 44 Fornax 44 chromatogram 44 cm ² 44 ellipsoidal 44 Holocene 44 Middle Jurassic 44 picoseconds 44 Paleozoic sedimentary 44 exoplanets orbiting 44 photolysis 44 Hubble Constant 44 SSTs 44 Bug Nebula 44 AGNs 44 constellation Coma Berenices 44 figs. 44 r2 = 44 P/# A2 44 molecular orbitals 44 ionized hydrogen 44 Paleozoic 44 Mesozoic 44 rifting 44 Silicified 44 jovian 44 ignimbrites 44 nitrogen isotope 44 Eocene epoch 44 Junnagunna 44 continental crust 44 auroral 44 plutonic rocks 44 phyllosilicate 44 Capricornus 44 Viking Lander 44 nebula 44 star Gliese 44 Paleocene Eocene 44 Cygni 44 homologs 44 coeval 44 branes 44 halite 44 Type Ia supernova 44 HD# [005] 44 nucleated 44 X ray pulses 44 BIFs 44 nuclei 44 craton 44 Eratosthenes 44 DGGE 44 Hyades cluster 44 solar minima 44 collisional 44 medium grained 44 planetary nebulae 44 supercontinent 44 subcrop 44 Paleozoic Era 44 Proxima Centauri 44 Mesozoic Era 44 noctilucent clouds 44 conductance 44 W/m2 44 locally graphitic 44 layered ultramafic 44 magnon 44 axial tilt 44 Fig. 4B 44 Middle Paleolithic 44 batholith 44 reflection nebula 44 radiocarbon dated 44 Delta Cephei 44 constellation Serpens 44 sulphide mineral 44 Mesozoic era 44 2ppm 44 haplogroup 44 #degreesC 44 Ordovician extinction 44 sedimentary rocks 44 Trilobites 44 southern constellation Carina 44 sidereal 44 gravitationally lensed 44 Middle Eocene 44 Great Oxidation Event 44 Magnetotelluric 44 Arae 44 gigapascals 44 epsilon 44 fig. S4 44 R Coronae Borealis 44 novas 44 limestone xenoliths 44 pfu 44 volcaniclastic rocks 44 Sulphide mineralization 44 HD#b 44 anaphase 44 marine sediments 44 orbited Jupiter 44 SNR #-#.# 44 Surtsey 44 #ppb [001] 44 isotherm 44 pyroxene 44 Fig.1 44 agarose gel electrophoresis 44 proton proton 44 Orion nebula 44 luminous galaxies 44 KH #D 44 mm f/#.#-#.# 44 Corot 9b 44 Laetoli Tanzania 44 interacting galaxies 44 Figure 2C 44 constellation Aquarius 44 protoplanetary 44 Lower Cretaceous 44 ˚ C. 44 maxima 44 THEMIS Image 44 Quartz vein 44 starlike object 44 μm thick 44 polypeptide chain 44 #gy 44 ν 44 Paleoproterozoic 44 Triassic 44 magmas 44 Comet C/# 44 chalcopyrite mineralization 44 Fig. 3d 44 constellation Ophiuchus 44 kimberlite breccia 44 unpolarized 44 SN #E 44 #.#um [001] 44 BLG #Lb 44 Last Glacial Maximum 44 μm 44 #,#-#,# ft. 44 Pegasi b 44 mesons 44 angstrom resolution 44 rRNA 44 La Ce Pr 44 planet TrES 44 Olduvai 44 CaCO 3 44 sulphidic 44 humans Homo sapiens 44 milli arcsecond 44 carbon isotope ratios 44 trimers 44 floresiensis 44 constellation Lyra 43 arcuate 43 Churyumov Gerasimenko 43 Dwarf galaxies 43 Fv 43 Lorentzian 43 archaeal 43 lobe finned fishes 43 X#.# [003] 43 Reiner Gamma 43 Acheulian 43 COOH 43 barred spiral galaxy 43 FWHM 43 θ 43 Au Cu mineralization 43 hornblende 43 ° C 43 diffusion coefficients 43 Io 43 quantum oscillations 43 constellation Carina 43 Mojzsis 43 supernova explosions 43 intramolecular 43 basaltic lava 43 stratigraphically 43 dynamical 43 Neukum 43 ° C warmer 43 Cryogenian 43 tau neutrinos 43 planetary transits 43 terranes 43 mrad 43 acid leached 43 Si substrate 43 vibrational modes 43 mineralized intrusive 43 -# deg [002] 43 PSR B# +# 43 Schematic representation 43 Chalcopyrite 43 Spectroscopic 43 distant quasars 43 dolomites 43 allele frequency 43 magnetotail 43 nitrogen isotopes 43 brachiopods 43 Virgo cluster 43 constellation Puppis 43 andesitic volcanic rocks 43 J1B 43 #.#μm [001] 43 forams 43 anisotropic 43 type Ia supernovae 43 Hominids 43 Sagittarius B2 43 martensite 43 nucleotide sequences 43 pyrrhotite chalcopyrite 43 Tl 43 photocurrent 43 Supplemental Figure 43 komatiite 43 moon Mimas 43 Potentiometer 43 metamorphic rocks 43 spodumene bearing pegmatite 43 Granodiorite 43 absorption coefficient 43 diffraction pattern 43 quartz feldspar porphyries 43 Magellanic Clouds 43 detrital 43 nm excitation 43 igneous rock 43 novae 43 tuffaceous rocks 43 T Tauri 43 baryons 43 emission nebula 43 constellation Auriga 43 constellation Ursa Major 43 gadolinium Gd 43 protoplanetary disks 43 Louvicourt 43 smectite 43 pN 43 clastic sediments 43 Noachian era 43 Upper Paleolithic 43 φ 43 stellar occultation 43 Cancri e 43 peridotites 43 gabbro dyke 43 tetramer 43 Methone 43 neutralinos 43 Australopithecus anamensis 43 habilis 43 coccolithophores 43 electron neutrino 43 Cepheus 43 centistokes 43 Cold Dark Matter 43 dimers 43 ultramafic rock 43 Hominid 43 Mott insulator 43 Late Pleistocene 43 superheavy elements 43 Fig. 1D 43 Achernar 43 antiparticle 43 W boson 43 inhomogeneities 43 Muons 43 Algol 43 magnesium Mg 43 Coulomb blockade 43 absorbance 43 #.#C [004] 43 unoxidized 43 Coma Cluster 43 calc alkaline 43 TiO 43 Hot Jupiters 43 coronal magnetic field 43 Confuciusornis 43 constellation Ara 43 Miocene 43 brown dwarf 43 circular dichroism 43 electron volt 43 evaporite 43 zodiac constellations 43 Argentinosaurus 43 HiLyte Fluor ™ 43 heterogeneities 43 TrES 43 Eemian 43 Globular Cluster 43 amplitudes 43 X ray absorption spectroscopy 43 star Proxima Centauri 43 torr 43 #P# [004] 43 GJ#b 43 Upper Cretaceous 43 Kuiper belt objects 43 Kuiper Belt Object 43 Kelvins 43 Nrg 43 Haplogroup 43 copper skarn 43 chromosphere 43 KT extinction 43 Tharsis Rise 43 chromitite 43 plate tectonics 43 lunar perigee 43 Type Ia 43 igneous rocks 43 olivines 43 Triangulum Galaxy 43 Silurian 43 5μm 43 Cretaceous interval 43 Makemake 43 ^ sub 43 pmol 43 ha -1 43 feathered dinosaur 43 XF# [002] 43 foraminifera 42 Crab Nebula 42 explosive volcanism 42 morphological similarities 42 elliptical galaxy 42 #mV V 42 geologic 42 Cenozoic era 42 ESO VLT 42 Gaensler 42 threonine 42 Carina constellation 42 Upper Jurassic 42 silicified zone 42 irradiance 42 Mini Thermal Emission 42 ostracods 42 millisecond pulsars 42 pyrophyllite 42 diffusivity 42 Figure 4a 42 vanadate 42 exoplanet orbiting 42 hominid species 42 extragalactic 42 ferric oxides 42 protostars 42 Venusian 42 exoplanetary 42 amu 42 sodium atoms 42 ohm cm 42 hydrothermal vent 42 spinning pulsar 42 Archaeopteryx 42 Neoproterozoic era 42 Encke gap 42 C#BL 6 42 isomeric 42 ZnSe 42 metamorphic rock 42 HARPS spectrograph attached 42 constellation Pegasus 42 Kuiper Belt Objects 42 terrestrial vertebrates 42 cherts 42 galaxies 42 adsorbed 42 Helix Nebula 42 Orionis 42 GRB # 42 MWNT 42 clades 42 Paranthropus robustus 42 antiparallel 42 Quaoar 42 delocalized 42 angstroms 42 CoRoT #b 42 epochs 42 nsec 42 B meson 42 constellation Pisces 42 Pleistocene Epoch 42 angular boulders 42 Ophiuchi 42 nucleosynthesis 42 Trifid 42 π 42 submillimetre wavelengths 42 constellation Cepheus 42 spectroradiometer 42 SDSS II 42 hafnium oxide 42 starburst galaxy 42 interstellar cloud 42 tetrahedral 42 planetary surfaces 42 metazoans 42 chromophore 42 crinoid 42 degC 42 WMAP satellite 42 photoionization 42 Swift Tuttle 42 bird Archaeopteryx 42 X ray telescopes 42 Alaskite 42 mH 42 elongated orbits 42 Super Earths 42 substrate specificity 42 dinosaur extinction 42 supernova 42 H. erectus 42 N#E 42 proto planetary disk 42 COROT 7b 42 #.#N [002] 42 HIP #b 42 strongly foliated 42 supermassive 42 W mK 42 Proterozoic 42 Jurassic Cretaceous 42 sunlike star 42 resonance frequency 42 GD# [001] 42 TFlops 42 Fig. 2D 42 χ 42 DFT calculations 42 elliptical galaxies