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(Click for frequent words.) 69 Milankovitch cycles 68 orbital inclination 68 rotational axis 67 cosmic ray flux 66 orbital eccentricity 66 solar irradiance 65 auroral activity 64 retrograde orbit 64 magnetic polarity 64 Earth rotational axis 63 Rossby waves 63 GJ#b 63 longwave radiation 63 comets orbiting 63 glacial interglacial 62 equatorial latitudes 62 planets orbits 62 dustier stormier atmosphere 62 subsurface ocean 62 glacial interglacial cycles 62 obliquity 62 WASP #b 62 airglow 62 Upsilon Andromedae 62 moon gravitational pull 61 jovian 61 cosmic ray intensity 61 sulfate aerosols 61 polar latitudes 61 Kuiper belt objects 61 tropospheric 61 meridional flow 61 interglacial periods 61 Cassini flybys 61 Yarkovsky effect 61 Saturn moon Mimas 60 sulphate aerosols 60 elongated orbits 60 geoid 60 Corot 9b 60 atmospheric CO2 levels 60 planetary orbits 60 lunar perigee 60 boreal regions 60 moonquakes 60 Ulysses spacecraft 60 highly elliptical orbit 60 hydrosphere 60 sunspot cycle 60 magnetic substorms 60 auroral displays 59 smallest exoplanet 59 Carina constellation 59 coolings 59 albedo reflectivity 59 gravitational pulls 59 sunspot activity 59 elongated orbit 59 polar vortex 59 Earth axial tilt 59 NASA satellites orbiting 59 retrograde orbits 59 glacial cycles 59 icy moons 59 solar minima 59 Kepler 9c 59 orbital resonance 59 equatorial bulge 59 surface temperatures SSTs 59 downwelling 59 mid latitudes 59 Epsilon Aurigae 59 radiative forcing 59 occultations 59 Konacki 59 tropical troposphere 59 substorm 59 Noctilucent clouds 59 galactic disk 59 anomalously warm 59 galaxy redshift 59 multi decadal 59 X ray binaries 59 Sromovsky 58 atmospheric circulations 58 filamentary structure 58 GJ #b [002] 58 Fomalhaut b 58 #.#oC [001] 58 midlatitudes 58 oceanic circulation 58 elliptical orbits 58 warmings 58 Hubble orbits 58 prograde 58 Gliese #c 58 magma ocean 58 geomagnetic activity 58 Tharsis Rise 58 atmospheric methane 58 coronal loop 58 exosphere 58 Upsilon Andromedae b 58 Maunder minimum 58 #.#C #.#C 58 circular orbits 58 Rayleigh scattering 58 climate forcings 58 Libra constellation Vogt 58 YORP effect 58 Antarctic stratosphere 58 dynamical evolution 58 aerosol concentrations 58 Pluto dwarf 58 COROT 7b 58 mantle plumes 58 tropopause 58 crustal thickness 58 shadowed craters 58 perihelion 57 Mercury magnetosphere 57 magnetic dynamo 57 equatorial regions 57 eccentric orbits 57 hunting Kepler telescope 57 irradiance 57 polar mesospheric clouds 57 Neptune Uranus 57 gravitational acceleration 57 slender crescent 57 waning gibbous 57 climatic variations 57 comets asteroids 57 Doppler shifts 57 geological timescales 57 temperature gradients 57 sized planets orbiting 57 Cosmic Microwave Background 57 Velicogna 57 -# degrees Fahrenheit [002] 57 Milankovitch 57 waning crescent 57 Arctic oscillation 57 Epsilon Eridani 57 upper troposphere 57 radiometric measurements 57 photosphere 57 meteorite impacts 57 warm interglacial periods 57 galactic cosmic rays 57 interglacial period 57 Earth biosphere 57 thermal inertia 57 tectonic uplift 57 Leonid shower 57 exoplanetary 57 Manned missions 57 luminous galaxies 57 MG J# +# 57 glaciations 57 cosmological distances 57 Earth gravitational pull 57 forcings 57 anthropogenic warming 57 sun irradiance 57 meteorite bombardment 57 tidal bulge 57 sunlike stars 56 deglaciation 56 CoRoT 9b 56 GHG concentrations 56 stellar occultations 56 Jupiter icy moons 56 Saturnian 56 radial velocity technique 56 volcanic aerosols 56 precessing 56 GZK cutoff 56 neutrino mass 56 tropical latitudes 56 mineral olivine 56 radial velocity method 56 geostationary orbits 56 OGLE TR #b 56 thermal gradients 56 teleconnections 56 transiting planets 56 Kuiper Belt Object 56 lunar equator 56 greatest insect emergences 56 lunar meteorites 56 Atlantic Multidecadal Oscillation AMO 56 APXS 56 tidally locked 56 deep convective clouds 56 retroreflector 56 inhabitable planets 56 ppmv 56 gravitational perturbations 56 Cancri e 56 waxing crescent 56 Corot 7b 56 CoRoT 7b 56 planet Gliese #g 56 Jupiter Ganymede 56 magnetotail 56 planetary Transits 56 Eta Aquarid meteor shower 56 antineutrinos 56 spacecraft orbited 56 metallicity 56 binary asteroid 56 SMOS mission 56 chlorine monoxide 56 diurnal temperature 56 Pacific Decadal Oscillation 56 HD #b [001] 56 oblate spheroid 56 meteoroid impacts 56 smoothed sunspot number 56 electron ion 56 polar caps 56 Cygnus Lyra region 56 Great Conveyor Belt 56 interannual 56 Martian dust 56 earthshine 56 Jovian moons 56 gravitational keyhole 56 TrES 4 56 poleward 56 mesosphere 56 warm interglacial 56 radiative transfer 56 coronal loops 56 visible wavelengths 56 springtime ozone 56 Jovian moon 56 Palaeocene Eocene Thermal Maximum 56 gravitational wobbles 56 AB Aurigae 56 #P/Churyumov-Gerasimenko 56 CoRoT #b 56 Ian McShane Pillars 56 lunar crust 56 circular orbit 56 Henize #-# 56 dipole moment 56 Mud volcanoes 55 elliptical orbit 55 energetic electrons 55 stratospheric ozone depletion 55 Halifax Weather Overcast 55 Saturn Cassini 55 basaltic rocks 55 volcanic plumes 55 solar nebula 55 atmospheric CO 55 advection 55 intrinsic brightness 55 sunspot numbers 55 planet orbits 55 periodicities 55 martian atmosphere 55 periodic dimming 55 Composite Infrared Spectrometer 55 tidally 55 comet orbit 55 Viking orbiters 55 Holocene epoch 55 interglacials 55 exoplanets orbiting 55 VY Canis Majoris 55 Noachian era 55 solar corona 55 #.#C [004] 55 millisecond pulsar 55 Saturn Enceladus 55 planetary transits 55 GJ #b [001] 55 #.#C warmer 55 orbiting observatories 55 Landsat satellites 55 hydrologic cycle 55 Aram Chaos 55 atmospheric circulation 55 zodiacal light 55 hydrological cycle 55 interannual variability 55 oceanic currents 55 supercooling 55 electron neutrinos 55 mantle convection 55 interplanetary magnetic 55 telescopic observations 55 Kuiper belt object 55 phytoplankton biomass 55 neutron spectrometer 55 orbital velocity 55 KBOs 55 specular reflection 55 active volcanism 55 decadal 55 celestial sphere 55 circumstellar 55 isotope fractionation 55 Mercury exosphere 55 Fashion Movie Reviews 55 CO2 concentrations 55 mesospheric 55 atmospheric CO2 concentration 55 satellite altimetry 55 interplanetary spacecraft 55 multidecadal 55 moons Phobos 55 synchronous orbit 55 gaseous planet 55 -# º C [002] 55 Cassini flyby 55 Earth radii 55 electron flux 55 blue supergiant 55 laser altimeter 55 hydroxyl molecules 55 #.#C #.#F [003] 55 SeaWiFS 55 lithosphere 55 Earth magnetotail 55 Kuiper Belt object 55 orbited Jupiter 55 glacier shrinkage 55 Cepheids 55 celestial equator 55 coronal holes 55 NASA ICESat 55 sunward 55 Syrtis Major 55 atmospheric CO2 concentrations 55 latitudinal 55 Venusian atmosphere 55 cryosphere 55 planet Gliese #c 55 planets orbiting sun 55 solar radii 55 gravitational slingshot 54 moons Europa 54 crustal movements 54 total solar irradiance 54 anthropogenically 54 orbital radius 54 Celsius #.#F 54 magnetic dipole 54 Galilean satellites 54 astrometry 54 Ozone depletion 54 orbital angular momentum 54 gravitational interaction 54 elemental abundances 54 Solar TErrestrial RElations Observatory 54 superheavy elements 54 protoplanet 54 gravitational tides 54 magnetospheric 54 volcanic moon Io 54 antineutrino 54 extrasolar 54 comet orbital 54 greenhouse warming 54 interstellar dust grains 54 Churyumov Gerasimenko 54 scarps 54 insolation 54 mineralogical composition 54 magnetic excitations 54 diurnal cycle 54 orbits 54 glacial melt 54 galactic alignment 54 ° C warmer 54 VB #b 54 moon Io 54 X ray emission 54 Venus transits 54 Plate tectonics 54 paleomagnetic 54 poleward shift 54 WMAP satellite 54 subglacial lakes 54 Cryogenian 54 hematite mineral 54 transiting exoplanet 54 Kuiper Belt Objects 54 cometary impacts 54 northern arctic plains 54 radioactive decay 54 baryonic matter 54 Venusian 54 celestial phenomena 54 ecliptic 54 backscattered 54 microlensing events 54 atmospheric aerosols 54 highly collimated 54 Paleocene Eocene Thermal Maximum 54 Io Europa 54 arcminutes 54 Doppler shift 54 anthropogenic CO2 emissions 54 quantum oscillations 54 northerly latitudes 54 Cryogenian period 54 mid Pliocene 54 sunspot cycles 54 #.#C above 54 atmospheric oceanic 54 equinoxes 54 Mercury Uranus 54 Ontario Lacus 54 albedo feedback 54 tectonic movements 54 HiRISE camera 54 meteoritic material 54 constellation Ursa Major 54 Nasa spacecraft 54 sidereal 54 planetary warming 54 ultraviolet wavelengths 54 Delta Cephei 54 martian meteorites 54 Beta Pictoris b 54 HiRISE image 54 earths surface 54 radial velocities 54 meteor impacts 54 Gamma ray burst 54 reentry capsule 54 radio occultation 54 Quadrantid meteor shower 54 anthropogenic carbon dioxide 54 gibbous 54 oxidized mercury 54 Saturn Uranus 54 HM Cancri 54 kyr 54 arcsecond 54 Diviner 54 Gemini constellation 54 meridional overturning circulation 54 Last Glacial Maximum 54 comet Tempel Tuttle 54 microlensing 54 superluminal 54 SST anomalies 54 electromagnetic flux 54 ecliptic plane 54 carbon dioxide concentrations 54 brightnesses 54 Space Environment Geochemistry 54 eclipsing binary 54 Samuel Oschin Telescope 54 geomagnetic disturbances 54 Southern Oscillation 54 orbit GEO 54 HL Tau 54 moon Enceladus 54 resonance frequency 54 Galilean moons 54 albedo 54 NASA QuikScat satellite 54 chondrites 54 Comet Halley 53 geomagnetic field 53 infrared spectral 53 AU Mic 53 perigee 53 zodiac constellations 53 ocean eddies 53 aerosol particles 53 mu Arae 53 supercooled liquid 53 waxing gibbous 53 auroral 53 Extrasolar planets 53 cosmic ray collisions 53 Shackleton crater 53 giant gaseous planets 53 coccolithophores 53 subtropical oceans 53 -# Celsius [001] 53 interplanetary magnetic field 53 Toutatis 53 cyclicity 53 spatially resolved 53 sextile 53 Kelvin -# 53 Envisat ASAR 53 icecaps 53 cosmic cannibal 53 exo planet 53 HARPS instrument 53 planemos 53 Earth albedo 53 noctilucent clouds 53 -# degrees Celsius [001] 53 spacecraft flyby 53 planet magnetosphere 53 planet Uranus 53 planets Uranus 53 magnetic reconnection 53 Quadrantids 53 crustal plates 53 silicate rocks 53 ocean basins 53 electron orbits 53 Magnetic reconnection 53 stratospheric clouds 53 Pluto Charon 53 lowermost mantle 53 orbits Saturn 53 solstices 53 Viking Lander 53 Min Temp #.# 53 atmospheric convection 53 climatic variability 53 Medieval Warming 53 Jupiter moon Io 53 Orionid meteors 53 biospheric 53 radiative cooling 53 constellation Lacerta 53 gravitational radiation 53 moonlet 53 Uranus Neptune 53 NASA twin rovers 53 tropospheric temperature 53 upwellings 53 CoRoT satellite 53 SIM PlanetQuest 53 radial velocity 53 ultracold temperatures 53 -# ° Celsius [001] 53 binary asteroids 53 Indian Ocean Dipole 53 extrasolar worlds 53 Antarctic Dry Valleys 53 discover Fomalhaut 53 frozen sunless 53 Earth thermosphere 53 homochirality 53 strange quark 53 nucleosynthesis 53 equatorial Pacific Ocean 53 dynamical 53 Kuiper Belt objects 53 -# degrees centigrade [001] 53 ionized particles 53 atmospheric CO2 53 waxing gibbous moon 53 Titan smoggy 53 earths 53 Eemian 53 El Nino Southern Oscillation 53 spherically symmetric 53 proto planetary disk 53 Atlantic Multidecadal Oscillation 53 gaseous planets 53 cometary material 53 nanomesh 53 X ray pulses 53 innermost planet 53 interstellar boundary 53 phyllosilicates 53 anthropogenic greenhouse gas 53 P/# A2 53 telescope Uranus 53 Alycia Weinberger 53 zodiacal dust 53 Einstein cosmological constant 53 SSTs 53 super Earths 53 Gliese #e 53 Fermi telescope 53 Neptunian 53 austral summer 53 distant supernovae 53 velocity vector 53 Comet Holmes 53 multi celled 53 BP Piscium 53 prominences 53 gravitational tugs 53 elevational 53 V# Mon 53 landfalling hurricanes 53 silicate dust 53 Earthlike planets 53 constellation Centaurus 53 chromosphere 53 Gliese #d 53 cosmic ray 53 geomagnetic 53 Ice Ages 53 La Nià ± 53 Maunder Minimum 53 galactic equator 53 velocity dispersion 53 smallest extrasolar planet 53 auroral emissions 53 torsional oscillator 52 Hot Jupiters 52 primitive meteorites 52 planets asteroids 52 Descent Imager Spectral Radiometer 52 WISE spacecraft 52 SINFONI 52 millimeter wavelengths 52 ionospheric 52 Galileo spacecraft 52 Hellas Basin 52 solar prominences 52 satellites orbiting Earth 52 mammal extinctions 52 Oort cloud 52 QQ# 52 largest moon Charon 52 polaritons 52 SIOUX CENTER Iowa KTIV 52 Ordovician extinction 52 temperature gradient 52 Martians invading 52 sunspots 52 occultation 52 cosmic phenomena 52 Earth orbiting satellites 52 ENAs 52 planetary 52 heavily cratered 52 polar craters 52 icy comets 52 stratospheric ozone 52 Little Ice Age 52 cryovolcanism 52 Coma Cluster 52 anticyclonic 52 millisecond pulsars 52 highly elliptical orbits 52 particle acceleration 52 Hesperian epoch 52 lobate scarps 52 transiting planet 52 photosynthetic organisms 52 permanently shadowed regions 52 radiative 52 CMB radiation 52 2oC 52 Permian extinction 52 latitudes 52 Geminid shower 52 dimming starlight 52 moons orbiting 52 Vertical wind shear 52 galaxy M# [001] 52 baryon 52 Saturn magnetosphere 52 magnetisation 52 apogee farthest point 52 Min temp 52 planetary alignments 52 relativistic electrons 52 gaseous methane 52 2 MeV electron 52 Gliese #G 52 whiz harmlessly 52 thermosphere 52 º Celsius 52 Tempel Tuttle 52 circumstellar disks 52 gravitational microlensing 52 scarps indicating 52 elliptical galaxy 52 anthropogenic greenhouse gases 52 Eric Rignot 52 Titan flyby 52 KAGUYA 52 permanently shadowed craters 52 solar insolation 52 Mercury flyby 52 Orionids 52 NASA rovers Spirit 52 magnetosphere 52 biogeochemical cycles 52 ion thrusters 52 radar altimetry 52 coronal hole 52 Bug Nebula 52 asteroid impacts 52 Express orbiter 52 HD#b 52 orbiting gamma ray 52 shear modulus 52 photochemical reactions 52 exoplanet discoveries 52 Jupiter Uranus 52 Mars Odyssey spacecraft 52 spiral nebulae 52 altitudinal 52 icesheets 52 gravitational redshift 52 synthetic aperture 52 Saturn equinox 52 neutrino detectors 52 marine phytoplankton 52 diffuse aurora 52 Comet NEAT 52 cirrus cloud 52 oscillations 52 thermohaline circulation 52 aurorae 52 Higgs bosons 52 Antarctic icecap 52 Hipparcos 52 Martian rovers 52 reionization 52 Yinghuo 1 52 coronal heating 52 SIRTF 52 anticyclones 52 geo stationary orbit 52 Medieval Warm Period 52 chlorophyll fluorescence 52 ICESat 52 filamentary structures 52 relativistic particles 52 iceberg calving 52 submillimetre wavelengths 52 Jupiter moons 52 aphelion 52 earthlike 52 sulfate aerosol 52 Magnetars 52 -# ° F [001] 52 substorms 52 electric dipole 52 Earthlike planet 52 extrasolar planets orbiting 52 Alfven waves 52 CAIs 52 outer corona 52 Flu epidemics 52 moon Europa 52 strange quarks 52 Ringed Planet 52 ejecta blanket 52 Svedhem 52 spatial scales 52 Ultraviolet radiation 52 telescope orbits 52 exoplanetary systems 52 Compton Gamma Ray 52 axis wobbles 52 LRO spacecraft 52 asteroids comets 52 Global Surveyor spacecraft 52 geothermal gradient 52 Martian equator 52 circularly polarized light 52 anthropogenic aerosols 52 gaseous envelope 52 permafrost degradation 52 BLG #Lb 52 circumstellar disk 52 Pluto Eris 52 sulphate particles 52 XTE J# 52 angular momentum 51 concentrating photovoltaics CPV 51 AGNs 51 Saturnian moons 51 isotopic composition 51 Geminga 51 geo synchronous 51 lensing galaxy 51 luminosities 51 oC 51 Sr Ca 51 steering currents 51 Planck satellite 51 UV photons 51 polarimetric 51 YU# 51  ° C. 51 terra forming 51 AMSR E 51 isostatic rebound 51 GOCE 51 reflection nebula 51 lunar craters 51 collisional 51 carbonate minerals 51 Polar Regions 51 precession 51 sunlike star 51 Earthlike 51 post perovskite 51 atmospheric carbon dioxide 51 silicon monoxide 51 Crab pulsar 51 Follett Pillars 51 RRATs 51 paleoclimatic 51 type Ia supernova 51 polar orbiting satellites 51 occulted 51 Cabeus crater 51 penumbral shadow 51 fluid viscosity 51 weakly interacting 51 ultraviolet radiation emitted 51 phytoplankton blooms 51 optical wavelengths 51 diurnal variation 51 phytoplankton bloom 51 alpine glaciers 51 planets moons 51 supersymmetric particles 51 THEMIS satellites 51 Kelvins 51 Mars Uranus 51 magnetospheres 51 hydrostatic equilibrium 51 greenhouse gas concentrations 51 baryonic 51 tectonic plate movements 51 cosmological observations 51 logarithmic scale 51 Zeta Ophiuchi 51 benthic foraminifera 51 planet HD #b 51 olivine mineral 51 millimeter wavelength 51 NASA Voyager spacecraft 51 Younger Dryas cold 51 Gravitational waves 51 electron diffusion 51 astronomical observations 51 ephemeris 51 Wolf Rayet star 51 Wiccans worship 51 strontium isotope 51 Pacific decadal oscillation 51 electronic excitations 51 silicate mantle 51 UV wavelengths 51 found circling Gliese 51 primitive organisms 51 STEREO spacecraft 51 axions 51 meteoroid 51 Lyrids 51 SN #gy 51 Martian polar 51 gravitational lenses 51 moons circling 51 arcsec 51 stellar seismology 51 BepiColombo 51 Mott insulator 51 extrasolar planet 51 pika habitat 51 extrasolar planetary 51 crewed spacecraft 51 Astrological lore 51 TGFs 51 cesium atom 51 isotope ratios 51 decadal scale 51 Mössbauer 51 Mandushev 51 X ray binary 51 Eocene epoch 51 Sun synchronous orbit 51 atmospheric phenomena 51 Cosmic rays 51 proplyds 51 explosive volcanism 51 Particle acceleration 51 Noah Diffenbaugh 51 CMB photons 51 glaciological 51 smoothest flattest 51 Herschel Space 51 harmful ultraviolet UV radiation 51 PSR J# 51 moon Mimas 51 planetoid 51 distant supernovas 51 glaciation 51 Current Warm Period 51 oscillation 51 Jupiter magnetosphere 51 lunar orbits 51 -# ° C [001] 51 shadowy craters 51 seabed sediments 51 atmospheric 51 planets atmospheres 51 rotational velocity 51 southern latitudes 51 abyssal plain 51 particle analyzers 51 Heliospheric Observatory SOHO 51 seafloor sediments 51 wavefronts 51 exoplanets planets 51 sunspot 51 starlike object 51 attoseconds 51 Cepheid variables 51 gravitational lens 51 isotopic ratios 51 cosmological parameters 51 dipolar 51 Type Ia supernova 51 galactic cores 51 biosignatures 51 starquakes 51 runaway greenhouse 51 troposphere 51 isotopic compositions 51 graphene electrons 51 HIRES spectrometer 51 Kepler #b 51 von Frese 51 atmospheric concentrations 51 Nernst 51 θ 51 clathrates 51 umbral shadow 51 polar 51 cirrus clouds 51 Arches Cluster 51 outermost planet 51 molten magma 51 permafrost melts 51 infrared astronomy 51 bosonic 51 crustal 51 gamma ray emission 51 Saturn moons Enceladus 51 Gusev crater 51 MESSENGER spacecraft 51 helicity 51 red supergiant 51 micro meteorites 51 constellation Aquarius 51 Muchachos Observatory 51 Coral bleaching 51 Alaskan glaciers 51 micrometre sized 51 HiRISE camera aboard 51 sub tropic 51 faraway galaxies 51 hexagonal mirrors 51 X ray emitting 51 micron wavelengths 51 baryon acoustic oscillations 51 planetary magnetospheres 51 C4 grasses 51 amplifying feedbacks 51 left handed isovaline 51 Neutron stars 51 ESA Huygens probe 51 radiosonde 51 imaging spectrometer 51 Jay Famiglietti 51 -# ° C. [002] 51 glacial melting 51 temporal variability 51 Landsat satellite 51 carbonate globules 51 hydrated minerals 51 galactic magnetic 51 Helioseismic 51 Foton spacecraft 51 Saturn outermost 51 supernovae explode 51 thrust faulting 51 moon Phobos 51 chlorophyll concentrations 51 crystalline silicates 51 Valles Marineris canyon 51 lunar highlands 51 exoplanet orbiting 51 gravitational interactions 51 climatic 51 cosmic microwave radiation 51 vorticity 51 lunar magma 51 Amundsen Sea