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(Click for frequent words.) 69 subsurface ocean 67 icy moons 67 exosphere 65 solar corona 65 fainter objects 65 extrasolar 64 Jupiter moon Io 64 X ray wavelengths 64 elongated orbits 63 gaseous planet 63 sterile neutrino 63 Gravitational waves 63 relativistic particles 63 filamentary structure 63 mesosphere 63 airglow 63 GJ #b [002] 63 emits X rays 62 magma ocean 62 smoggy atmosphere 62 photosphere 62 planet magnetosphere 62 circumstellar 62 Fomalhaut b 62 distant supernovae 62 magnetic monopoles 62 Higgs bosons 62 lunar crust 62 Earthlike 62 asteroidal 62 polar craters 62 moon Enceladus 61 cosmic ray flux 61 Cosmic Microwave Background 61 spatially resolved 61 circumstellar disks 61 Jovian moon 61 cometary material 61 AB Aurigae 61 accretion disks 61 WASP #b 61 cryovolcanism 61 CMB radiation 61 astrophysical objects 61 permanently shadowed craters 61 infrared telescopes 61 HD#b 61 nebular 61 galactic cosmic rays 61 Corot 9b 61 axions 61 silicate dust 60 protoplanet 60 situ measurements 60 COROT 7b 60 zodiacal light 60 Saturnian moon 60 Beta Pictoris b 60 Gamma rays 60 VY Canis Majoris 60 Hellas Basin 60 energetic electrons 60 outer corona 60 Titan smoggy 60 tholins 60 GJ #b [001] 60 jovian 60 cosmological distances 60 Svedhem 60 dynamical processes 60 cometary dust 60 planetary nebulae 60 interstellar clouds 60 smallest exoplanet 60 Saturn moon Enceladus 60 HD #b [002] 60 Gliese #c 60 Galileo spacecraft 60 ionise 60 Alfven waves 60 supergiant star 60 aerosol particles 60 Upsilon Andromedae 60 Saturn magnetosphere 60 mineralogical composition 60 missing baryons 60 Earthlike planets 60 comet nucleus 60 VIRTIS 59 interstellar cloud 59 exoplanetary 59 KBOs 59 occultations 59 infrared wavelengths 59 Mandushev 59 giant gaseous planets 59 Saturnian system 59 magnetospheric 59 solar nebula 59 extrasolar planet 59 basaltic rocks 59 silicon monoxide 59 Fermi telescope 59 spectroscopically 59 Keck Interferometer 59 polar vortex 59 Syrtis Major 59 Martian atmosphere 59 neutrino particles 59 AGNs 59 Earthlike planet 59 extrasolar planetary systems 59 visible wavelengths 59 martian atmosphere 59 comets asteroids 59 accretion disk 59 X ray pulses 59 chromosphere 59 galactic disk 59 intrinsic brightness 59 ultraviolet wavelengths 59 ultracold atoms 59 upper troposphere 59 distant supernovas 59 weakly interacting 59 millimeter wavelengths 59 Virgo Cluster 59 gamma rays emitted 59 troposphere 59 Jupiter icy moons 59 noctilucent clouds 59 Galilean moons 59 carbonate globules 58 planet Gliese #c 58 polarimetry 58 Venusian surface 58 Corot 7b 58 X ray telescopes 58 exoplanets orbiting 58 crystalline silicates 58 gamma ray emission 58 Earth magnetosphere 58 planet HD #b 58 Neutron stars 58 gamma ray observatory 58 Ulysses spacecraft 58 prebiotic molecules 58 GJ#b 58 Oort Cloud 58 hydrated minerals 58 planets orbiting distant 58 Red Rectangle 58 Goldilocks planet 58 Oort cloud 58 Martian dust 58 Saturn rings 58 hydrosphere 58 Arches Cluster 58 Cassini flyby 58 WIMPs 58 orbited Jupiter 58 habitable worlds 58 neutral mass spectrometer 58 extrasolar planets 58 moons orbiting 58 antineutrinos 58 geoneutrinos 58 Jonathan Lunine 58 Solar TErrestrial RElations Observatory 58 optical wavelengths 58 X ray emission 58 RXTE 58 reionization 58 Galilean satellites 58 Kuiper belt objects 58 Geminga 58 ejecta 58 undiscovered particle 58 gravitational interaction 58 Earth ionosphere 58 spectroscopic analysis 58 astronomical objects 58 sun corona 58 moon Europa 58 innermost planet 58 permanently shadowed regions 58 masers 58 mantle convection 58 starquakes 58 binary asteroid 58 shadowy craters 58 Saturnian moon Titan 57 galactic bulge 57 Higgs particle 57 planetary magnetospheres 57 submillimeter 57 moon Titan 57 ionized gas 57 X ray binaries 57 polaritons 57 electron neutrinos 57 supersymmetric particles 57 sunlike stars 57 distant galaxies 57 Kuiper Belt Objects 57 infrared spectra 57 shadowed craters 57 SPICAM 57 meteoritic material 57 galaxy formation 57 magnetotail 57 interstellar dust grains 57 lunar orbits 57 detect gamma rays 57 circumstellar disk 57 outer planets 57 ionize 57 midlatitudes 57 protoplanetary disks 57 rocky planets 57 galactic mergers 57 lunar perigee 57 Mercury exosphere 57 Bonnie Buratti 57 Mercury magnetosphere 57 Spitzer infrared spectrograph 57 habitable planet 57 planets atmospheres 57 baryonic 57 Antennae Galaxies 57 MG J# +# 57 neutralinos 57 Bug Nebula 57 blue supergiant 57 diffuse aurora 57 superfluids 57 microbial ecosystems 57 comets orbiting 57 cometary 57 Comet 9P/Tempel 1 57 exo planets 57 gluon 57 water vapor 57 TrES 4 57 Saturn Cassini 57 planetary transits 57 exoplanetary systems 57 HiRISE image 57 gravitational radiation 57 gaseous planets 57 gravitational lenses 57 polar regions 57 retrograde orbit 57 neutralino 57 polar mesospheric clouds 57 particle acceleration 57 dimming starlight 57 tropospheric 57 quark gluon plasma 57 ringed planet 57 sulphate particles 57 axion 57 planets orbits 57 Cancri e 57 hydroxyl molecules 57 galactic cores 57 X ray observatory 57 Henize #-# 57 detect gravitational waves 57 protons collide 57 transiting planet 57 tropopause 57 Eta Carinae 57 coronal loops 57 earthlike 57 red supergiant 57 Lake Vostok 56 neutron star 56 Churyumov Gerasimenko 56 graphite whiskers 56 submillimeter wavelengths 56 Martian surface 56 potentially habitable 56 SN #gy 56 moon Io 56 planemos 56 X ray emitting 56 radiative cooling 56 protoplanetary disk 56 mantle plumes 56 lunar meteorites 56 specular reflection 56 magnetic reconnection 56 blazar 56 moon Ganymede 56 baryon 56 SN #A 56 Milky Way halo 56 Olympus Mons 56 neutrino mass 56 tropical troposphere 56 filamentary 56 permanently shadowed 56 electromagnetic flux 56 Coma Cluster 56 micro meteorites 56 rotational axis 56 Enceladus 56 ecliptic plane 56 Magnetars 56 type Ia supernovae 56 Hawking radiation 56 spectral fingerprint 56 magnetar 56 Shackleton crater 56 neutrino detectors 56 radial velocity 56 moonlet 56 SINFONI 56 extrasolar planetary 56 MARSIS radar 56 atmospheric aerosols 56 Infrared Thermal Imaging Spectrometer 56 active galactic nucleus 56 CoRoT 9b 56 galaxies collide 56 Wolszczan 56 planetary nebulas 56 lunar equator 56 cosmic microwave background 56 NASA QuikScat satellite 56 planet Gliese #g 56 heliospheric 56 supercooled liquid 56 polar stratospheric 56 Saturn Enceladus 56 infrared spectrometers 56 bosonic 56 aurorae 56 ionized particles 56 Epsilon Eridani 56 orbital resonance 56 multiband imaging photometer 56 Huygens mission 56 GRBs 56 Martian rocks 56 elliptical galaxy 56 Aram Chaos 56 transiting exoplanet 56 planetary surfaces 56 hypersonic speeds 56 COROT 56 electron ion 56 cosmic ray intensity 56 comet orbit 56 micrometre sized 56 heliopause 56 sulfate aerosols 56 carbonate minerals 56 Evolution Explorer 56 spectroscopic measurements 56 Jovian moons 56 volcanic moon Io 56 Orion nebula 56 Neptune Uranus 56 Antarctic Dry Valleys 56 interstellar medium 56 Mars moon Phobos 56 planets Uranus 56 cosmic phenomena 56 Bok globules 56 icy comets 56 zodiacal dust 56 highly elliptical orbits 56 albedo reflectivity 56 comet McNaught 56 Cassini ion 56 silicate minerals 56 Upsilon Andromedae b 56 thermosphere 56 NEAs 56 spherically symmetric 56 stellar occultation 56 carbonaceous chondrites 56 quantum particle 56 radial velocity technique 56 sterile neutrinos 56 Pluto Charon 56 earthlike planets 56 earthshine 56 radial velocity method 56 moon Charon 56 coronagraph 56 rotating neutron stars 56 X ray spectrometer 56 geomagnetic substorms 56 CoRoT 7b 56 radiometric measurements 56 infalling 55 ultracold 55 advection 55 Ohmoto 55 atmospheric circulations 55 irregularly shaped asteroid 55 interplanetary spacecraft 55 constellation Hercules 55 habitable zones 55 sodium atoms 55 distant galaxy 55 ionized gases 55 spicules 55 metallicity 55 Bose Einstein condensates 55 Titan Saturn 55 active galactic nuclei 55 neutron spectrometer 55 olivines 55 interstellar particles 55 astrophysical 55 polar latitudes 55 galaxy redshift 55 Rossby waves 55 molten magma 55 Sagittarius B2 55 supermassive 55 antiparticle 55 Comet Churyumov Gerasimenko 55 photochemical reactions 55 polar caps 55 magnetosphere 55 SIRTF 55 heavily cratered 55 Yinghuo 1 55 ejecta blanket 55 nucleosynthesis 55 Saturn auroras 55 Kuiper belt object 55 type Ia supernova 55 HIRES spectrometer 55 planetary atmospheres 55 volcanic aerosols 55 Meridiani 55 Cosmic Microwave Background CMB 55 X ray binary 55 afterglows 55 lunar craters 55 phyllosilicates 55 Mars Squyres 55 blazars 55 undersea volcanoes 55 Martian arctic 55 infall 55 IRC +# 55 aerosol concentrations 55 emit X rays 55 ultraviolet photons 55 inhabitable planets 55 crustal rocks 55 Gravitational lensing 55 Mössbauer 55 moonlets 55 interstellar space 55 strange quark 55 Hot Jupiters 55 ultracold temperatures 55 antineutrino 55 equatorial regions 55 constellation Carina 55 unaided eye 55 muon neutrino 55 hematite mineral 55 cosmological theories 55 Jupiter Ganymede 55 Saturn moons Titan 55 exoplanets planets 55 silicate rocks 55 sulfur isotope 55 gravitationally bound 55 Kuiper belt 55 Epsilon Aurigae 55 Gliese #d 55 lensing galaxy 55 protoplanetary 55 magnetars 55 Nasa spacecraft 55 gaseous methane 55 supernovae 55 Europa Ganymede 55 Cepheids 55 Galaxy Evolution 55 Milky Way Galaxy 55 noble gases 55 planets orbiting 55 ah dus 55 ionised 55 photons particles 55 radar interferometry 55 hydrothermal fluid 55 Saturn moons 55 magnetic substorms 55 planet Uranus 55 Type Ia supernovas 55 galaxy M# [002] 55 Wilkinson Microwave Probe 55 Surface Composition Spectrometer 55 TGFs 55 auroral displays 55 IBEX spacecraft 55 extragalactic 55 Earth radii 55 thin crescent 55 impactor spacecraft 55 nucleon 55 VIRTIS instrument 55 axial tilt 54 Hanny Voorwerp 54 infrared radiation 54 constellation Aquarius 54 Jupiter magnetosphere 54 exoplanet atmospheres 54 lunar soil 54 BP Psc 54 nightglow 54 planetary orbits 54 spectrographic 54 Kepler 9c 54 Cassini Huygens 54 Comet Hartley 2 54 merging galaxies 54 WMAP satellite 54 V# Mon 54 Fornax cluster 54 planets circling stars 54 gravitational wave 54 submillimetre wavelengths 54 orbiting gamma ray 54 martian rocks 54 stony meteorites 54 ejecta plume 54 Cabeus 54 assumed planets circling 54 spectroscopic 54 CoRoT #b 54 orbiting telescopes 54 SUSY 54 olivine mineral 54 GZK cutoff 54 icy crust 54 Mojzsis 54 interstellar boundary 54 periodic dimming 54 terrestrial planets 54 galaxy M# [001] 54 NASA twin STEREO 54 Nili Fossae 54 Schwarzschild radius 54 Neil Gehrels 54 moonquakes 54 EPOCh 54 ammonia hydrate 54 Hubble observations 54 electron orbits 54 astrophysical phenomena 54 temperature gradients 54 telescopic observations 54 vapourise 54 Hubble orbits 54 redshifted 54 hydrologist Carolyn Driedger 54 planets orbiting stars 54 radioactive nuclei 54 interstellar dust 54 substorm 54 interstellar distances 54 protostar 54 constellation Eridanus 54 gravitational tides 54 cosmic cannibal 54 seabed sediments 54 Gamma ray bursts 54 martian surface 54 chlorine monoxide 54 lunar magma 54 CoRoT satellite 54 Delta Cephei 54 topological insulators 54 galaxy NGC 54 HM Cancri 54 oblate spheroid 54 planets 54 supernova remnant 54 Crab pulsar 54 supermassive stars 54 UV photons 54 VLTI 54 Type Ia supernova 54 supercooling 54 constellation Virgo 54 Andromeda Galaxy 54 Martian rovers 54 IR spectra 54 SN #C 54 dust mote 54 SNR #-#.# 54 slender crescent 54 outermost layers 54 gravitationally lensed 54 dynamical evolution 54 shorter wavelengths 54 Mount Bosavi 54 APXS 54 GALEX 54 Galactic cosmic rays 54 globulars 54 gamma ray burst 54 astrobiological 54 SNe Ia 54 solar radii 54 Optical tweezers 54 imaging spectrometer 54 RS Ophiuchi 54 planets asteroids 54 tropospheric ozone 54 Wolf Rayet star 54 arctic plains 54 sulphates 54 ESA Mars 54 galactic alignment 54 Fomalhaut 54 sized planets orbiting 54 Comet Machholz 54 atmospheric convection 54 ray Space Telescope 54 THEMIS spacecraft 54 heliosphere 54 extrasolar planets orbiting 54 SN#A 54 Saturn moon Mimas 54 perihelion 54 emission spectroscopy 54 tidal bulge 54 Alycia Weinberger 54 mineral olivine 54 laser altimeter 54 infrared wavelength 54 Saturn moon 54 INMS 54 Martian meteorites 54 cometary debris 54 infrared spectrograph 54 extraterrestrial UFOs 54 post perovskite 54 MARSIS 54 microplastics 54 Martian equator 54 Martian polar 54 Synchrotron radiation 54 comet 54 gravity warps 54 gamma ray emitting 54 ionospheric 54 luminous galaxies 54 Rydberg atom 54 -# degrees Fahrenheit [002] 54 regolith 54 longwave radiation 54 isotopic ratios 54 Gamma ray 54 HARPS instrument 54 Voyager spacecraft 54 Yarkovsky effect 54 Alfvén waves 54 Descent Imager Spectral Radiometer 54 NASA Wilkinson Microwave 54 exoplanets 54 cosmic ray particles 54 Diviner instrument 54 ultrashort pulses 54 retroreflector 54 heliosheath 54 reentry capsule 54 #P/Churyumov-Gerasimenko 54 Milky Way galaxy 54 XMM Newton 54 elliptical orbits 54 supernova explosions 54 vorticity 54 ESO VLT 54 Himalayan river basins 54 RS Oph 54 diffraction patterns 54 Higgs singlet 54 thermal equilibrium 53 THz radiation 53 observable universe 53 Orbiter MRO 53 Neutral Mass Spectrometer 53 cosmic microwave radiation 53 Omega Centauri 53 Gemini constellation 53 potassium atoms 53 Comet Halley 53 OMEGA instrument 53 Storing carbon dioxide 53 Palaeozoic sedimentary 53 deep convective clouds 53 quantum oscillations 53 Saturn outermost 53 planetary Transits 53 infrared spectroscopic 53 plagioclase 53 starburst galaxy 53 strangelets 53 auroral 53 Bose Einstein condensate BEC 53 sediments deposited 53 equatorial latitudes 53 lowermost mantle 53 baryonic matter 53 observationally 53 moons Phobos 53 planetary alignments 53 magmas 53 orbiting observatories 53 Huygens descent 53 helium atoms 53 coccolithophores 53 exoplanet orbiting 53 colliders 53 volcanic plumes 53 celestial phenomena 53 Earth magnetotail 53 Comet Hartley 53 infalling gas 53 moons circling 53 bolometers 53 JIMO 53 lunar regolith 53 Astrophysical 53 coronal mass ejections CMEs 53 protoplanetary disc 53 Lunine 53 oppositely directed 53 spacetime 53 meteoritic 53 Gusev crater 53 auroral emissions 53 eclipsing binary 53 -# ° C [001] 53 elemental composition 53 microbialites 53 quantum tunneling 53 spatial scales 53 supergiant stars 53 active volcanism 53 Jakosky 53 abyssal plain 53 NASA Atmospheric Infrared 53 lithosphere 53 airbursts 53 moon Mimas 53 Magellanic Stream 53 deplete ozone 53 X ray afterglow 53 Zeta Ophiuchi 53 Cassini flybys 53 northern arctic plains 53 superstrings 53 ionosphere 53 Planetary Fourier Spectrometer PFS 53 Krimigis 53 IR wavelengths 53 chemical reactivity 53 volcanically active 53 superluminal 53 Compact Reconnaissance Imaging Spectrometer 53 proto galaxies 53 isotope fractionation 53 chondrules 53 Kepler #b 53 downwelling 53 cosmic ray collisions 53 Composite Infrared Spectrometer 53 neutrino oscillations 53 subatomic particle 53 topological defects 53 ESA XMM Newton 53 spectral signatures 53 nanomesh 53 comet Tempel Tuttle 53 superlens 53 magnetic monopole 53 substorms 53 constellation Cassiopeia 53 Phoebe orbits 53 Saturn aurora 53 Saturnian moons 53 O OREOS 53 AU Mic 53 ESA Huygens probe 53 neutrino oscillation 53 spectrographs 53 galaxy clusters 53 Planck satellite 53 dense clumps 53 MESSENGER spacecraft 53 particle analyzers 53 eccentric orbits 53 radial velocities 53 spectrometric 53 Valles Marineris 53 BLG #Lb 53 Mars CRISM 53 antimatter particles 53 altocumulus 53 chemically reactive 53 globular cluster 53 Martian crater 53 galactic halo 53 Ionospheric Sounding 53 waning crescent 53 cosmic rays 53 gamma ray flashes 53 redshifts 53 blackbody 53 icy moon Enceladus 53 permanently shadowed crater 53 proplyds 53 elemental abundances 53 icecap 53 X rays gamma rays 53 anthropogenic carbon dioxide 53 smallest exoplanets 53 comet nuclei 53 Saturnian 53 infrared spectrometer 53 Extrasolar planets 53 photometry 53 Orionids 53 Comet Tempel Tuttle 53 cirrus clouds 53 gravitational waves 53 galaxy cluster 53 Orionid 53 arcminutes 53 photoelectron spectroscopy 53 orbital eccentricity 53 CMB photons 53 mesospheric 53 oxidized mercury 53 smallest extrasolar planet 53 neutron radiation 53 NuSTAR 53 atmospheric methane 53 spherules 53 planet habitability 53 Plutoids 53 strangelet 53 protostars 53 backscattering 53 Bose Einstein condensation 53 GeV 53 interstellar dust particles 53 supernova explosion 53 martian meteorites 53 Libra constellation Vogt 53 cometary impacts 53 KT boundary 53 millisecond pulsar 53 antiferromagnets 53 spicule 53 ultracold atomic 53 relativistic jets 53 isotopic signature 53 Candor Chasma 53 Rayleigh scattering 53 ejecta curtain created 53 Infrared Pathfinder Satellite 53 faint galaxies 53 tau neutrino 52 subglacial 52 carbonyl sulfide 52 Quaoar 52 moons Europa 52 brightest supernova 52 atomic lattice 52 Lyman alpha 52 planetary nebula 52 Wolf Rayet stars 52 comet Churyumov Gerasimenko 52 Einstein equations 52 Cepheid variables 52 flood basalts 52 HII regions 52 star Beta Pictoris 52 journal Astronomy 52 intracluster 52 starburst galaxies 52 elliptical galaxies 52 gibbous 52 superheavy elements 52 Trifid Nebula 52 CAIs 52 Perseus Cluster 52 Jupiter Uranus 52 Tod Strohmayer 52 Context Camera 52 Magnetic Imager HMI 52 invisible odorless tasteless 52 ionized molecules 52 Orionid meteors 52 backscattered 52 chemical composition 52 P/# A2 52 interstellar dust clouds 52 GRB #B 52 absorb photons 52 auroral activity 52 baryon acoustic oscillations 52 methane clathrates 52 journal Icarus 52 starlike object 52 supermassive black hole 52 cumulus cloud 52 -# Celsius [001] 52 planet WASP #b 52 spacecraft flyby 52 gradiometer 52 moon Phobos 52 microlensing events 52 Warmer oceans 52 clumpiness 52 Tharsis Rise 52 Samuel Oschin Telescope 52 greenish color 52 inhomogeneous 52 Toutatis 52 WISE infrared 52 telescope orbits 52 magma chambers 52 Noctilucent clouds 52 Bullet Cluster 52 Io volcanoes 52 asthenosphere 52 photochemical processes 52 atmospheric 52 Martian terrain 52 abiogenesis 52 vaporises 52 stellar nurseries 52 methyl cyanide 52 planetary embryos 52 millimeter wavelength 52 potentially habitable planets 52 Martian microbes exist 52 microquasar 52 proton decay 52 martian soil 52 occulted 52 comet dust 52 nanobubbles 52 thermal gradients 52 Shackleton Crater 52 cryogenically cooled 52 ionisation 52 Cloud Aerosol Lidar 52 overlying layers 52 Kuiper Belt object 52 supernova SN 52 gravitons 52 Gamma ray burst 52 Adam Riess 52 water vapor condenses 52 ionized hydrogen 52 asteroids comets 52 Carina constellation 52 Eta Aquarid meteor shower 52 RRATs 52 ozone O3 52 constellation Lyra 52 magnetic dynamo 52 sulfate aerosol 52 atmospheric haze 52 constellation Pisces 52 chondrites 52 journal Meteoritics 52 abyssal 52 Comet Elenin 52 Anthony Remijan 52 LISA Pathfinder 52 volcanic vents 52 moons Io 52 protoplanets 52 Muchachos Observatory 52 tau neutrinos 52 osmium 52 Chajnantor plateau 52 Mott insulator 52 constellation Centaurus