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(Click for frequent words.) 63 elongated orbits 62 circumstellar 62 Martian dust 61 comet Tempel Tuttle 61 lowermost mantle 60 Yarkovsky effect 60 circumstellar disk 60 magnetic polarity 60 orbital eccentricity 60 COROT 7b 60 silicate dust 60 coronal loops 60 cosmic ray flux 59 gravitational interaction 59 Corot 9b 59 exosphere 59 axial tilt 59 equatorial latitudes 59 airglow 59 planetary surfaces 59 Jupiter Ganymede 59 visible wavelengths 59 comets asteroids 59 planets orbits 59 ejecta blanket 58 arcsecond 58 orbital resonance 58 carbonaceous chondrites 58 sunlike stars 58 Upsilon Andromedae b 58 mineral olivine 58 X ray wavelengths 58 planetary orbits 58 galactic disk 58 planet Gliese #g 58 longwave radiation 58 gravitational tugs 58 subsurface ocean 58 silicate rocks 58 Fomalhaut b 58 moons Phobos 58 zodiacal dust 58 lunar meteorites 58 Kuiper belt objects 58 GJ #b [002] 58 ultraviolet wavelengths 57 spheroidal 57 moon Phobos 57 HiRISE image 57 nebular 57 solar corona 57 Earth ionosphere 57 rotational axis 57 icy moons 57 specular reflection 57 extrasolar 57 post perovskite 57 jovian 57 precessing 57 cirrus cloud 57 polar vortex 57 electromagnetic flux 57 Epsilon Eridani 57 filamentary 57 coronal holes 57 inhabitable planets 57 lensing galaxy 57 Bug Nebula 57 Comet Tempel Tuttle 57 Jupiter moon Io 57 ionized particles 57 VY Canis Majoris 57 UV photons 57 Hubble orbits 57 Earth radii 57 Saturn Enceladus 57 Saturn moon Mimas 57 hydrosphere 57 retrograde orbit 57 stratospheric clouds 57 orbital inclination 57 crustal thickness 56 meridional flow 56 Saturn magnetosphere 56 atmospheric circulations 56 photosphere 56 coronal loop 56 APXS 56 smallest exoplanet 56 relativistic particles 56 Corot 7b 56 midlatitudes 56 Upsilon Andromedae 56 circumstellar disks 56 prominences 56 YORP effect 56 Comet Hartley 56 Rossby waves 56 comets orbiting 56 GJ#b 56 tidal bulge 56 submillimetre wavelengths 56 CoRoT #b 56 magnetic excitations 56 lunar crust 56 electron flux 56 isotope fractionation 56 Gliese #c 56 asteroidal 56 gravitational acceleration 56 planet magnetosphere 56 silicon monoxide 56 Alycia Weinberger 56 olivine mineral 56 Syrtis Major 56 electrons protons 56 planets asteroids 56 Cygnus Lyra region 56 Extrasolar planets 56 NEAs 56 Magnetars 56 meteoritic material 56 blue supergiant 56 gravitational pulls 56 arcsec 56 gibbous 56 lithosphere 56 dipole moment 56 Venusian atmosphere 56 electron neutrinos 56 Jovian moons 56 galaxy redshift 56 Cancri e 56 cosmic ray intensity 56 filamentary structure 56 ionised gas 56 heavily cratered 56 tropical latitudes 56 interstellar dust grains 56 ion flux 55 WASP #b 55 magnetic substorms 55 gaseous planets 55 TrES 4 55 helium nuclei 55 weakly interacting 55 planet Gliese #c 55 chromosphere 55 Ultraviolet radiation 55 AB Aurigae 55 magnetospheric 55 asteroids comets 55 hydrostatic equilibrium 55 chondritic 55 carbonate minerals 55 carbonate globules 55 polarimetry 55 coronal magnetic field 55 Mercury exosphere 55 absorbs sunlight 55 protoplanet 55 Rayleigh scattering 55 protoplanetary disk 55 lunar craters 55 MG J# +# 55 olivines 55 Mössbauer 55 cometary impacts 55 sized planets orbiting 55 HD#b 55 atomic lattice 55 Plutoids 55 Ulysses spacecraft 55 moons orbiting 55 ultracold atoms 55 P/# A2 55 GZK cutoff 55 stony meteorites 55 hematite mineral 55 atmospheric convection 55 martian atmosphere 55 interstellar cloud 55 Zeta Ophiuchi 55 Kepler 9c 55 obliquity 55 mineralogical composition 55 synchronous orbit 55 auroral activity 55 mantle convection 55 cosmic cannibal 55 isotopic ratios 55 luminosities 55 meteoroid 55 moonquakes 55 magma ocean 54 isotopic compositions 54 Manned missions 54 cometary debris 54 periodic dimming 54 metallicity 54 retroreflector 54 exoplanetary 54 polar latitudes 54 thermal gradients 54 Coma Cluster 54 airbursts 54 ultraviolet radiation emitted 54 electrons positrons 54 Red Rectangle 54 ionized gases 54 cometary material 54 gaseous planet 54 submillimeter wavelength 54 sunward 54 heliospheric 54 X ray emitting 54 electron orbits 54 Milankovitch cycles 54 Earthlike 54 THz radiation 54 UV wavelengths 54 spatially resolved 54 upper troposphere 54 spectral measurements 54 starquakes 54 lunar perigee 54 Venusian 54 galactic cosmic rays 54 rotational velocity 54 Kuiper Belt Object 54 comet McNaught 54 phyllosilicates 54 moon Mimas 54 moonlets 54 temperature gradients 54 CMB radiation 54 impactors 54 silicate minerals 54 glows brightly 54 solar minima 54 antineutrinos 54 galactic halo 54 Doppler shifts 54 highly elliptical orbits 54 Caloris 54 Orionid 54 Greenhouse gases trap 54 Earth magnetosphere 54 tropopause 54 radiative cooling 54 Cosmic Microwave Background 54 Jupiter icy moons 54 superluminal 54 comet nucleus 54 oblate spheroid 54 vorticity 54 Gliese #e 54 electron density 54 Kuiper Belt Objects 54 moon Io 54 planetary transits 54 X ray binaries 54 baryonic matter 54 stellar occultation 54 atmospheric opacity 54 gravitational perturbations 54 dust mote 54 Kuiper belt object 54 bosonic 54 Comet Holmes 54 celestial sphere 54 waning gibbous 54 volcanic moon Io 54 Muchachos Observatory 54 micro meteorites 54 moon Deimos 54 moonlet 54 photon energies 54 planets Uranus 54 habitable zones 54 emittance 54 Saturn Cassini 54 proto planetary disk 54 supergiant star 54 Carina constellation 54 neutron spectrometer 54 gaseous methane 54 spacecraft flyby 54 energetic electrons 54 primitive meteorites 54 zodiac constellations 54 penumbral shadow 54 reflection nebula 54 comet orbit 53 Galilean moons 53 hydroxyl molecules 53 comet tail 53 Phys. Rev. Lett 53 emissivity 53 baryon 53 constellation Eridanus 53 solar nebula 53 electron volts eV 53 equatorial bulge 53 SIRTF 53 meteoroid impacts 53 perihelion 53 Gamma ray burst 53 galaxy M# [001] 53 galaxy M# [002] 53 HD #b [001] 53 photochemically 53 photochemical reactions 53 dielectric permittivity 53 ionise 53 planet WASP #b 53 compressional 53 gravitational tides 53 spectroscopic analysis 53 graphite whiskers 53 Aram Chaos 53 Vourlidas 53 arcseconds 53 cm -3 53 electron ion 53 relativistic speeds 53 Galactic cosmic rays 53 Tempel Tuttle 53 Raman spectra 53 earths surface 53 planetary nebulas 53 ejecta 53 silicate mantle 53 Ultraviolet rays 53 backscattered 53 homochirality 53 fainter objects 53 outermost layers 53 Martian surface 53 neutrino mass 53 basaltic rocks 53 Fig. 1b 53 topological defects 53 frictional heating 53 chondrites 53 Martian moons Phobos 53 wavefunction 53 Saturnian moon Titan 53 intrinsic brightness 53 distant supernovae 53 regolith 53 ellipsoid 53 protoplanetary 53 elongated orbit 53 aerosol particles 53 lunar equator 53 gravitational keyhole 53 Michelson interferometer 53 dustier stormier atmosphere 53 earthlike 53 Delta Cephei 53 periodicities 53 slender crescent 53 Hot Jupiters 53 Charon Pluto 53 dwarf spheroidal 53 substorm 53 geoneutrinos 53 Ian McShane Pillars 53 HL Tau 53 Comet Halley 53 volcanic aerosols 53 chemically reactive 53 Jovian moon 53 Sagittarius B2 53 solar prominences 53 telescope Uranus 53 polar mesospheric clouds 53 meteoroids 53 Fermi telescope 53 Imaging Spectroradiometer MODIS instrument 53 SNR #-#.# 53 Terra Meridiani 53 proplyds 53 Mandushev 53 planetary Transits 53 harmful ultraviolet 53 emission nebula 53 infrared laser beam 53 Muons 53 lithium atoms 53 Comet Encke 53 VB #b 53 Cassini flybys 53 crystal lattices 53 Mercury magnetosphere 53 IKAROS 53 X ray pulses 53 prolate 53 baryonic 53 outer heliosphere 53 anthropogenic carbon dioxide 53 methanogenesis 53 infall 53 Gamma rays 53 magnetic dynamo 53 Iapetus 52 starlike object 52 sun ultraviolet radiation 52 spectral characteristics 52 ferrous oxide 52 telescopic observations 52 shorter wavelengths 52 exoplanetary systems 52 arcminutes 52 X ray afterglow 52 crystalline silicates 52 magnetic dipole 52 interstellar dust particles 52 tropospheric 52 X ray emission 52 Cosmic rays 52 Vertical wind shear 52 protoplanetary discs 52 magnetic monopoles 52 basaltic lava 52 Neptune Uranus 52 eccentric orbits 52 luminous galaxies 52 electrons orbiting 52 planets comets 52 mesospheric 52 azimuthal 52 interplanetary spacecraft 52 OGLE TR 52 nucleosynthesis 52 X rays gamma rays 52 planet HD #b 52 multi celled 52 thermally induced 52 submillimeter 52 helium ions 52 geological timescales 52 strange quarks 52 Terahertz waves 52 hydrophobicity 52 IR wavelengths 52 extraterrestial 52 BP Piscium 52 AU Mic 52 polar craters 52 KH #D 52 lunar regolith 52 moon Enceladus 52 Gravitational waves 52 mid latitudes 52 WISE spacecraft 52 tholins 52 Earthlike planet 52 stratospheric ozone depletion 52 GQ Lupi 52 millimeter wavelengths 52 meteor impacts 52 Samuel Oschin Telescope 52 sodium atoms 52 impactor spacecraft 52 planet Uranus 52 refractive indices 52 harmful ultraviolet radiation 52 magnetotail 52 sidereal 52 gamma rays emitted 52 diffuse aurora 52 colder denser 52 mesosphere 52 scarps indicating 52 earthshine 52 umbral 52 glacial interglacial 52 hydrated electron 52 downwelling 52 inhomogeneous 52 Europa Ganymede 52 left handed isovaline 52 permanently shadowed regions 52 macroscopically 52 Jupiter magnetosphere 52 neutralinos 52 Quadrantid 52 cosmological distances 52 lithospheric 52 star Spica 52 Noctilucent clouds 52 fluid viscosity 52 Gusev crater 52 Olympus Mons 52 irregularly shaped asteroid 52 radial velocity technique 52 Quadrantid meteor shower 52 martian surface 52 radioactive nuclei 52 NASA rovers Spirit 52 Proxima Centauri 52 Comet Hartley 2 52 Jupiter Uranus 52 ionised 52 helicity 52 lunar highlands 52 Epsilon Aurigae 52 quasiparticle 52 gray hematite 52 resonance frequency 52 diurnal cycle 52 accretion disks 52 kcal mol 52 plasmon 52 asthenosphere 52 lipoprotein cholesterol 52 GALEX 52 wavefronts 52 Valles Marineris 52 dynamical processes 52 abyssal plain 52 neutron radiation 52 thermal inertia 52 polar caps 52 foreground galaxy 52 compressive stress 52 Slime molds 52 Martian terrain 52 stellar occultations 52 novas 52 Orionids 52 iron pnictides 52 Earth biosphere 52 planetesimal 52 transiting planet 52 single celled microorganisms 52 Antennae Galaxies 52 geomagnetic field 52 spherical shapes 52 sulphate aerosols 52 spicule 52 moon Ganymede 52 telescope eyepiece 52 Spitzer infrared spectrograph 52 blazar 52 gaussian 52 Comet 9P/Tempel 1 52 hunting Kepler telescope 52 Oort cloud 52 photoelectron 52 Tunguska Siberia 52 coronal mass ejections CMEs 52 cometary dust 52 waxing crescent 52 atmospheric aerosols 52 comet 52 submicrometer 52 ellipsoids 52 SMBH 52 Saturn outermost 52 gravitational radiation 52 exoplanet orbiting 52 Quadrantids 52 Isidis Planitia 52 permanently shadowed craters 52 Uranus Neptune 52 moons Europa 52 BLG #Lb 52 teleconnections 51 tidally locked 51 albedo feedback 51 infrared photons 51 Great Conveyor Belt 51 Toutatis 51 spectroscopically 51 microlensing events 51 morphologies 51 stratocumulus clouds 51 electrons emitted 51 Veil Nebula 51 monotonically 51 Orionid meteors 51 micrometre 51 hydrologic cycle 51 lunar soil 51 retrograde orbits 51 Heliospheric Observatory SOHO 51 micrometer scale 51 radial velocity method 51 Martian rocks 51 J# +# [002] 51 binary asteroid 51 planets circling stars 51 interstellar clouds 51 Cosmic ray 51 prograde 51 earthâ € ™ 51 eclipsing binary 51 orbits Saturn 51 Saturnian 51 ferroelectricity 51 spontaneous fission 51 cosmic microwave radiation 51 surface plasmon 51 elemental abundances 51 constellation Hercules 51 Adaptive optics 51 crystallites 51 sphericity 51 icy comets 51 V# Mon 51 phyllosilicate 51 planet gravitational tug 51 infalling 51 outer corona 51 hydrothermal fluid 51 star Beta Pictoris 51 lightwaves 51 gaseous envelope 51 Albedo 51 Henize #-# 51 sundog 51 rotating neutron stars 51 tectonic uplift 51 moon gravitational pull 51 ARPES 51 moons circling 51 detect gamma rays 51 globulars 51 copper oxide superconductors 51 sulfate aerosols 51 geyser plumes 51 Mini TES 51 thermally activated 51 Pluto Eris 51 radiative transfer 51 antineutrino 51 Earth axial tilt 51 interstellar dust clouds 51 radiative 51 shadowed craters 51 mid Pliocene 51 Shepherding Spacecraft 51 paramagnetic 51 Methone 51 active volcanism 51 constellation Andromeda 51 yr -1 51 shear modulus 51 tidally 51 ionizes 51 condensation nuclei 51 infrared wavelength 51 Geminid 51 B meson 51 extrasolar planetary systems 51 volcanic plumes 51 kelvin 51 Tharsis Rise 51 geoid 51 constellation Virgo 51 Kepler #b 51 emits photon 51 advection 51 Cassini flyby 51 poly L lysine 51 Oort Cloud 51 Bok globules 51 Jovian planets 51 Palaeozoic sedimentary 51 moon Dione 51 nuclei 51 Keck Interferometer 51 icesheets 51 micrometre sized 51 constellation Cetus 51 carbonaceous chondrite 51 radiometry 51 Magnetic reconnection 51 noctilucent clouds 51 KBOs 51 lunar orbits 51 Solar flares 51 lander rover 51 optical wavelengths 51 morphological similarities 51 chemical reactivity 51 oscillation amplitude 51 Comet Machholz 51 volcanoes spewing 51 meteorite impacts 51 θ 51 temperature barometric pressure 51 phytoplankton biomass 51 diffract 51 spherical halo 51 Hellas Basin 51 earths crust 51 Cabeus crater 51 corona discharge 51 sunlike star 51 cosmic magnifying glass 51 waxing gibbous moon 51 infrared spectra 51 Shackleton crater 51 diffracting 51 Orion nebula 51 gluon 51 Fig. 2b 51 Mpc 51 spherically symmetric 51 Antarctic Dry Valleys 51 pyroxene 51 ostracods 51 Type Ia supernovas 51 chlorine peroxide 51 Saturn outermost ring 51 Ultraviolet UV radiation 51 Gliese #G 51 icesheet 51 polar stratospheric 51 Terahertz radiation 51 gravity warps 51 CoRoT 51 Einstein cosmological constant 51 circumstellar dust 51 coronagraph 51 diamagnetic 51 elliptical orbits 51 cm -1 51 exo planet 51 -# degrees Fahrenheit [002] 51 protoplanets 51 dimming starlight 51 cuprate superconductors 51 occultations 51 umbral shadow 51 zodiacal constellations 51 TappingMode 51 antiferromagnets 51 CMB photons 51 collisional 51 quantum particle 51 yardangs 51 deep convective clouds 51 polarimetric 51 primitive organisms 51 planetesimals 51 ultraviolet sunlight 51 magnetic monopole 51 prokaryote 51 highly collimated 51 Planetary Transits 50 planets constellations 50 #x magnification [002] 50 gold nanoclusters 50 microgravity environment 50 Rosette Nebula 50 X ray telescopes 50 comets meteors 50 Pluto Charon 50 biosignatures 50 photosynthetic pigments 50 mantle plumes 50 adsorbate 50 Southern Annular Mode 50 synthetic aperture 50 Saturnian moons 50 Bonnie Buratti 50 microscopic specks 50 gravitational lens 50 Phoebe orbits 50 Warmer oceans 50 Fig. 4A 50 photochemical reaction 50 lunar surface 50 convection currents 50 photon flux 50 dipolar 50 Earth rotational axis 50 Reiner Gamma 50 van der Waals interactions 50 submillimeter wavelengths 50 jarosite 50 fig. S2 50 ionized gas 50 type Ia supernova 50 hydrated silica 50 planet orbits 50 lithium bearing brines 50 elliptical galaxy 50 Mars landers 50 solar radii 50 Astrological lore 50 Rydberg atom 50 emit X rays 50 Encke gap 50 millimeter wavelength 50 φ 50 tungsten isotopes 50 hypothalamic pituitary gonadal HPG 50 helical structures 50 eddy currents 50 shadowy craters 50 R Coronae Borealis 50 Chromatic aberration 50 planetary atmospheres 50 sun corona 50 magnetar 50 electronic excitations 50 planets atmospheres 50 interstellar distances 50 CoRoT 9b 50 stellar seismology 50 Kuiper Belt object 50 Circinus X 1 50 isotope composition 50 atmospheric CO2 levels 50 cosmic ray particles 50 extrasolar planet HD #b 50 infra red radiation 50 anticyclonic 50 Antarctic stratosphere 50 northern arctic plains 50 nuclides 50 extrasolar planets orbiting 50 BLG #L 50 Meteor showers 50 albedo 50 celestial object 50 orbital velocity 50 -# degrees centigrade [001] 50 waning crescent Moon 50 diffraction patterns 50 supercooling 50 Smartest Machine 50 NASA ICESat 50 accretion disk 50 neutral mass spectrometer 50 cesium atom 50 gamma ray observatory 50 globular cluster M# 50 emits X rays 50 bedrock outcropping 50 mesocyclone 50 highly elliptical orbit 50 1μm 50 galactic equator 50 cyclicity 50 SGR J# 50 synchrotron emission 50 SN #A 50 Diviner 50 geomagnetic substorms 50 sulfidic 50 equatorial regions 50 habitable worlds 50 spectrometric 50 Regolith 50 Ringed Planet 50 dense clumps 50 water vapor condenses 50 HD #b [002] 50 ENAs 50 refract light 50 Herschel Crater 50 Gas hydrates 50 Viking Lander 50 whiz harmlessly 50 Astronomical Units 50 nucleon 50 photocurrent 50 helium atoms 50 valence electron 50 electron scattering 50 magnons 50 Svedhem 50 chondrules 50 galactic mergers 50 transmissivity 50 radiate heat 50 Fig. 4B 50 Cloudiness 50 protoplanetary disc 50 Compact Reconnaissance Imaging Spectrometer 50 clumpiness 50 convective heat 50 ionosphere 50 Super Earths 50 Fig. 3b 50 photobleaching 50 Solar TErrestrial RElations Observatory 50 interstellar particles 50 potassium atoms 50 Diviner instrument 50 red supergiant 50 largest moon Charon 50 electron pairing 50 Particle acceleration 50 rotifer 50 friction coefficients 50 ppbv 50 multiband imaging photometer 50 Fig. 1a 50 geostationary orbits 50 galactic alignment 50 Earthlike planets 50 Io Europa 50 surface temperatures SSTs 50 piezoelectric properties 50 Libra constellation Vogt 50 ADM Aeolus 50 titanium atoms 50 ionized molecules 50 HIP #b 50 TrES 50 microlens 50 silicate grains 50 Neutron stars 50 SIM PlanetQuest 50 atmospheric oceanic 50 reflectance spectroscopy 50 red supergiants 50 millisecond pulsars 50 geomagnetic activity 50 collimated beam 50 seabed sediments 50 meteoritic 50 martensite 50 rocky planets 50 gravitational interactions 50 absorption spectra 50 Convection Rotation 50 Scientists theorized 50 reentry capsule 50 Plate tectonics 50 meV 50 galactic clusters 50 interstellar dust 50 Saturn moon Iapetus 50 SN #gy 50 Geminga 50 delaminations 50 particle acceleration 50 supersymmetric particles 50 parsec 50 LAGEOS 50 carbonaceous material 50 merging galaxies 50 ionized hydrogen 50 -# º C [002] 50 Hipparcos 50 astrobiological 50 refracts light 50 asteroid flyby 50 planets moons 50 gravitational attraction 50 Beta Pictoris 50 millisecond pulsar 50 planetary magnetospheres 50 spectral bands 50 Orientale Basin 50 sulfur isotopes 50 angular momentum 50 goethite 50 exoplanets orbiting 50 CAIs 50 gravitationally 50 nanoribbon 50 astrophysical objects 50 spacetime 50 coccolithophores 50 yellowish hue 50 Invisibility cloak 50 geo synchronous 50 diffracted 50 absorbs ultraviolet 50 spectrographs 50 Omega Centauri 50 electronvolts 50 Saturn moons Titan 50 greatest insect emergences 50 solar irradiance 50 ionospheric 50 zodiacal light 50 oxidized mercury 50 Mars Uranus 50 Kepler 9b 50 IBEX spacecraft 50 Konacki 50 galactic bulge 50 ferric oxides 50 valence electrons 50 ablates 50 quasicrystal 50 spherical particles 49 constellation Lacerta