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(Click for frequent words.) 64 prominences 64 airglow 64 comet Tempel Tuttle 64 jovian 63 moon Io 63 circumstellar 62 coronal loops 62 energetic electrons 62 MG J# +# 61 cometary debris 61 photosphere 61 VY Canis Majoris 61 basaltic lava 61 Jupiter moon Io 61 planets moons 60 emit X rays 60 Upsilon Andromedae 60 RS Ophiuchi 60 coronal mass ejections CMEs 60 Geminga 60 ionized particles 60 starbursts 60 coronal holes 60 galactic disk 60 planets comets 60 V# Mon 60 retroreflector 60 Neptune Uranus 60 Syrtis Major 59 comet tail 59 circumstellar disks 59 ionised gas 59 interstellar clouds 59 comet Hale Bopp 59 glows brightly 59 oppositely directed 59 Solar flares 59 Trifid Nebula 59 ionizes 59 X ray emitting 59 infalling 59 solar corona 59 nebulae 59 Coronal Mass Ejections 59 accretion disks 59 dust motes 59 Candor Chasma 58 Saturn outermost 58 sun corona 58 KH #D 58 geyser plumes 58 spacecraft flyby 58 relativistic jets 58 dense clumps 58 comets asteroids 58 ionized atoms 58 aurorae 58 Saturn moon Mimas 58 ionized gases 58 IRAS #-# 58 Saturn Enceladus 58 Perseid meteor 58 ionized hydrogen 58 interstellar cloud 58 Gravitational waves 58 auroral 58 erupting volcanoes 58 Lagoon Nebula 58 floating orbs 58 olivine mineral 58 sundog 58 circumstellar disk 58 X ray pulses 57 Aurigid 57 blue supergiant 57 moon Enceladus 57 Red Rectangle 57 moon Mimas 57 periodic dimming 57 Helix Nebula 57 infalling gas 57 planets orbits 57 elongated orbits 57 cirrus cloud 57 heliospheric 57 infall 57 volcanic moon Io 57 planetary transits 57 spiral galaxy NGC 57 X ray emission 57 Fermi telescope 57 Comet Tempel Tuttle 57 hexagonal mirrors 57 IRC +# 57 electrons positrons 57 Crab Nebula 57 auroral displays 57 ghostly glow 57 Coronal mass 57 Carina constellation 57 interstellar dust clouds 57 Saturn moon Iapetus 57 planetary nebulas 57 Bug Nebula 57 infrared satellite imagery 57 magnetospheric 57 spheroidal 57 polar vortex 57 faint wisps 57 Earth magnetotail 57 comets orbiting 57 cinder cones 57 emission nebula 57 Rosette Nebula 57 X ray telescopes 57 filamentary structures 57 telescope eyepiece 57 magnetotail 56 Meteor showers 56 Saturn magnetosphere 56 Neutron stars 56 rotating neutron stars 56 Saturnian moon 56 Orion nebula 56 cosmic ray flux 56 lensing galaxy 56 auroral activity 56 Digitized Sky Survey 56 Valles Marineris 56 planet magnetosphere 56 femtosecond timescale 56 uncharged particles 56 starscape 56 light refracting 56 lenticular clouds 56 chromosphere 56 Jupiter magnetosphere 56 stellar nurseries 56 retrograde orbit 56 fiery sunsets 56 CMB photons 56 Trapezium 56 Dust devils 56 nebular 56 constellation Fornax 56 Comet Holmes 56 hydrated silica 56 meteoroid impacts 56 spicules 56 nebulas 56 exoplanets orbiting 56 sunbeams 56 Planetary nebulae 56 galactic cores 56 exosphere 56 emits X rays 56 ionized gas 56 magnetic reconnection 56 substorm 56 brightest meteors 56 X ray wavelengths 56 Earth ionosphere 56 Solar TErrestrial RElations Observatory 56 greenish glow 56 occultations 56 afterglows 56 circumstellar dust 56 dwarf novae 56 IBEX spacecraft 56 constellation Andromeda 56 micro meteorites 56 magnetized plasma 56 sunlight glinting 56 silicon monoxide 56 gibbous 56 ionized plasma 56 gamma rays emitted 56 interstellar dust 56 ionise 55 lunar craters 55 plasmasphere 55 Comet Hartley 2 55 Comet Halley 55 radiative cooling 55 mineral olivine 55 backscattered 55 tidally 55 sunbursts 55 Quadrantid 55 Nasa Mars Reconnaissance 55 constellation Carina 55 Epsilon Aurigae 55 Orionids 55 Comet Hartley 55 galaxies collide 55 planetary nebula 55 Stephan Quintet 55 Pleiades cluster 55 Upsilon Andromedae b 55 ionised 55 helium nuclei 55 constellation Aquarius 55 bluish glow 55 volcanic lava flows 55 extrasolar 55 starquakes 55 Ulysses spacecraft 55 reddish glow 55 chlorine monoxide 55 lava eruptions 55 X rays gamma rays 55 Pavonis Mons 55 WISE telescope 55 glow brightly 55 cumulus cloud 55 Jupiter Uranus 55 cosmological distances 55 spaceweather.com 55 millisecond pulsar 55 polar latitudes 55 Samuel Oschin Telescope 55 moonquakes 55 shadowed craters 55 Leonid meteors 55 underwater volcanoes 55 Halema'uma'u Crater 55 GJ #b [002] 55 liquid xenon 55 Hanny Voorwerp 55 Doppler shifts 55 Noctilucent clouds 55 spherical halo 55 Ring Nebula 55 Heliospheric Observatory SOHO 55 Martian craters 55 Sarychev Peak 55 icy comets 55 Great Conveyor Belt 55 molten magma 55 moons circling 55 galaxy M# [001] 55 HD# [002] 55 starburst galaxy 55 silicate dust 55 constellation Centaurus 55 Spitzer infrared 55 constellation Hercules 54 yardangs 54 absorbs photons 54 WMAP satellite 54 helium atoms 54 globular cluster M# 54 Saturn moons Titan 54 Cherenkov radiation 54 X ray afterglow 54 inhomogeneities 54 glowing orbs 54 celestial phenomena 54 Geminid meteors 54 masers 54 HiRISE camera aboard 54 filamentary structure 54 Io volcanoes 54 sulfurous steam 54 Chilean Atacama Desert 54 active galactic nucleus 54 coronal loop 54 inky sky 54 Quadrantid meteor shower 54 Martian dust 54 Saturnian moon Titan 54 Ares Vallis 54 Geminid shower 54 Cat Paw Nebula 54 Veniaminof 54 Type Ic supernova 54 dusty disks 54 gravitational tides 54 blazars 54 fading afterglow 54 earthlike 54 gamma ray emitting 54 ESO PR 54 Veil Nebula 54 lapilli 54 lava flowed 54 hydrosphere 54 barred spiral galaxy 54 Earth magnetosphere 54 nightglow 54 HM Cancri 54 water vapor condenses 54 Particle acceleration 54 Orionid 54 Aqua satellite 54 Wolf Rayet star 54 stellar occultation 54 ultraviolet wavelengths 54 unleashed torrents 54 SpaceWeather.com 54 upper troposphere 54 stratus clouds 54 spatially resolved 54 Horsehead Nebula 54 Galilean satellites 54 gamma ray flashes 54 relativistic particles 54 galactic mergers 54 Perseus Cluster 54 cluster NGC 54 Perseid meteor showers 54 Saturnian moons 54 glowing brightly 54 HL Tau 54 galactic cosmic rays 54 stratocumulus clouds 54 Saturn moon Enceladus 54 cryovolcanism 54 Magnetars 54 detect gamma rays 54 olivine crystals 54 coronal mass ejections 54 Magellanic Clouds 54 ENAs 54 polar craters 54 Dumbbell Nebula 54 HiRISE image 54 windblown sand 54 extrasolar planet HD #b 54 planetary Transits 54 auroras 54 eccentric orbits 54 reflection nebula 54 Planck telescope 54 Saturn Cassini 54 galaxy M# [002] 54 towering cumulus clouds 54 hollow cylindrical 54 Butterfly Nebula 54 sodium atoms 54 superheated plasma 54 Arsia Mons 54 RRATs 54 Tharsis Rise 54 Cosmic Microwave Background 54 ultraviolet sunlight 54 ultraviolet lamp 54 Bose Einstein condensate BEC 54 Terra Sirenum 54 isotopic ratios 54 diffuse aurora 54 blazar 54 Arches Cluster 54 Gamma rays 54 precessing 54 Comet 9P/Tempel 1 53 luminous galaxies 53 Phoebe orbits 53 planets asteroids 53 starlike 53 Supernova #A 53 protostars 53 Corot 9b 53 Lyrids 53 Caloris 53 sulphate aerosols 53 polygonal shapes 53 Coma cluster 53 colliding galaxies 53 planetary magnetospheres 53 Bok globules 53 icy moons 53 lowermost mantle 53 pinwheel shaped 53 planetary nebulae 53 distant quasar 53 spacecraft orbited 53 Swift Ultraviolet Optical 53 martian landscape 53 slender crescent 53 atmospheric haze 53 downwelling 53 proplyds 53 Orbiter LRO 53 Gamma ray 53 Swift Tuttle 53 Orionid meteors 53 magnetospheres 53 waxing crescent 53 ejecta blanket 53 dust devils 53 solidified lava 53 Comet Encke 53 coronagraph 53 interacting galaxies 53 novas 53 zodiacal light 53 Cassini flybys 53 magnetic dynamo 53 basalt rocks 53 star clusters nebulae 53 spews ash 53 ultraviolet imaging spectrograph 53 electron flux 53 planets constellations 53 nebulosity 53 Io Europa 53 hydrothermal fluid 53 STEREO spacecraft 53 Herschel Crater 53 gamma ray observatory 53 Coma Cluster 53 harmonic tremors 53 galaxy NGC 53 Saturn moons 53 IRAS 4B 53 visible wavelengths 53 sulphate particles 53 Cosmic rays 53 soundwaves 53 Hubble orbits 53 thin crescent 53 Galilean moons 53 Magnetic reconnection 53 Nasa spacecraft 53 Dynamics Observatory 53 Leonid meteor 53 McMurdo Dry Valleys 53 equatorial latitudes 53 Kamoamoa eruption 53 Ultraviolet light 53 Saturnian 53 diffraction patterns 53 protoplanetary disk 53 geysers erupting 53 supergiant star 53 albedo reflectivity 53 tholins 53 lightwaves 53 smallest exoplanet 53 radiofrequency waves 53 cosmic ray particles 53 ejecta 53 volcanic basalt 53 gravitational interaction 53 viscous fluid 53 Moderate Resolution Imaging 53 Jupiter moons 53 lunar crust 53 geomagnetic disturbances 53 runaway thermonuclear 53 Infrared Mapping Spectrometer VIMS 53 PKS #-# 53 noctilucent clouds 53 cosmic cannibal 53 swirling vortices 53 Geminids meteor shower 53 faint meteors 53 tidal tails 53 Contrails 53 rotational axis 53 binary asteroid 53 Galactic cosmic rays 53 HII regions 53 Scanning electron microscope 53 comet McNaught 53 asteroidal 53 turbulent eddies 53 sunlike stars 53 porous sandstone 53 volcanic lava 53 protoplanetary 53 zodiacal dust 53 Type 1a supernova 53 Fomalhaut b 53 scanning electron micrograph 53 Ozone O3 53 outer corona 53 Martian dunes 53 Jovian atmosphere 52 cosmic phenomena 52 pions 52 cumulous clouds 52 sunlike 52 transiting exoplanet 52 moisture condenses 52 magnetic substorms 52 fissure eruption 52 hubble 52 mudpots 52 Comet #P/Holmes 52 water vapor 52 basalt lava 52 Gamma ray bursts 52 axial tilt 52 Saturn outermost ring 52 Lyrid meteor shower 52 Kraken Mare 52 electrons emitted 52 Insets 52 Perseus constellation 52 lobate scarps 52 nebula 52 nebula NGC 52 galactic clusters 52 lava flowing 52 axions 52 crossbedding 52 moon Phobos 52 Tempel Tuttle 52 mirrorlike 52 Eta Aquarids 52 millimeter wavelength 52 clouds scud 52 Epsilon Eridani 52 Orion constellation 52 lava tubes 52 Henize #-# 52 Puu Oo 52 subsurface ocean 52 Envisat satellite 52 Distant galaxies 52 meteor impacts 52 Solar Dynamics Observatory 52 meteoroids 52 magma molten rock 52 superfluid helium 52 stellar seismology 52 gravitational interactions 52 volcanic craters 52 Sunspots 52 interstellar dust grains 52 Substorms 52 sunlike star 52 Molten lava 52 particle acceleration 52 submillimetre 52 micron wavelengths 52 Martian gullies 52 GRB# 52 Evolution Explorer 52 Lava flows 52 sulfate aerosols 52 filamentary 52 glowing lava 52 Omega Nebula 52 X ray binary 52 constellation Scorpius 52 cosmic ray intensity 52 single celled algae 52 Muons 52 Eagle Nebula 52 jet contrails 52 interferogram 52 gamma ray emission 52 proto galaxies 52 gravitational perturbations 52 weightlessly 52 Quadrantids 52 Terra Meridiani 52 Coronal Mass Ejections CMEs 52 sized planets orbiting 52 ultraviolet radiation emitted 52 Zeta Ophiuchi 52 dusty cocoons 52 electromagnetic flux 52 colder denser 52 interferograms 52 Corot 7b 52 microscopic bubbles 52 moonless nights 52 gravity warps 52 silicate rocks 52 WISE spacecraft 52 AB Aurigae 52 moon Dione 52 globulars 52 constellation Eridanus 52 leaf undersides 52 lithium atoms 52 lunar magma 52 Perseid meteors 52 moonlets 52 Hot Jupiters 52 Eta Aquarid meteor shower 52 Mercury magnetosphere 52 Polycyclic aromatic hydrocarbons 52 Caloris Basin 52 ferric oxides 52 radial velocity technique 52 reddish hues 52 spectral measurements 52 emit gamma rays 52 distant suns 52 moondust 52 moons orbiting 52 cometary dust 52 UV photons 52 interplanetary spacecraft 52 galactic halo 52 electrons protons 52 comet orbit 52 THEMIS satellites 52 orbiting gamma ray 52 Ultraviolet rays 52 assumed planets circling 52 supernova explosion 52 Type 1a supernovae 52 tropopause 52 Olympus Mons 52 constellation Cassiopeia 52 microquasar 52 magnetic polarity 52 molten rocks 52 Saturn rings 52 R Coronae Borealis 52 Gamma ray bursts GRBs 52 Perseus cluster 52 asteroids comets 52 star Beta Pictoris 52 inner Oort Cloud 52 orbited Jupiter 52 Plate tectonics 52 volcano spews 51 lava fountains 51 Meteor shower 51 cavitations 51 smoggy haze 51 Delta Cephei 51 Orionid meteor shower 51 Gamma Virginids 51 sonoluminescence 51 planetarium dome 51 deflating balloon 51 supernovae explosions 51 phyllosilicate 51 Martian terrain 51 brownish haze 51 Ultra violet 51 methane CH4 51 Pancam 51 photochemically 51 SNR #-#.# 51 Cassini flyby 51 magnetopause 51 PSR B# 51 constellations Cygnus 51 exoplanetary 51 solar flares coronal 51 convection currents 51 spherically symmetric 51 infrared photons 51 comma shaped 51 rover panoramic 51 Trifid 51 mesospheric 51 hydrocarbon haze 51 blowholes 51 merging galaxies 51 Kuiper Belt Objects 51 type Ia supernovae 51 swirling dust devils 51 Explorer WISE 51 crystalline silicates 51 circularly polarized 51 cathode rays 51 Relations Observatory STEREO 51 Carina Nebula 51 starlike object 51 X ray photons 51 vaporisation 51 spinning neutron stars 51 comets meteors 51 planet Gliese #g 51 faraway planets 51 magnetic monopoles 51 gamma ray flares 51 iridescent sheen 51 microscopic phytoplankton 51 Galileo spacecraft 51 Ontario Lacus 51 specular reflection 51 meteor craters 51 hydroxyl molecules 51 dynamical processes 51 Jonathan Lunine 51 CMB radiation 51 SOHO spacecraft 51 COROT 7b 51 Sagittarius B2 51 Vourlidas 51 galactic cosmic radiation 51 Saharan Desert 51 coronal hole 51 evaporite deposits 51 bluish tinge 51 Meteor Shower 51 V# Sgr 51 Perseid shower 51 constellation Virgo 51 emitted photons 51 particles WIMPs 51 Orion Nebula 51 pyrite galena 51 Magellanic Stream 51 curved mirrors 51 Wolf Rayet stars 51 mineral hematite 51 volcanic caldera 51 thrust faulting 51 midlatitude 51 exhaust plume 51 scudding clouds 51 vaporises 51 volcanic plumes 51 NGC #A 51 polar mesospheric clouds 51 moonlike 51 Krakatoa erupted 51 Halemaumau 51 solar flares 51 Taurid 51 methane ethane 51 Ngauruhoe 51 sun glints 51 aurora 51 constellations planets 51 erupting lava 51 faraway galaxies 51 cumulus clouds 51 Imaging Spectroradiometer MODIS instrument 51 fumaroles 51 rotating updraft 51 waning gibbous 51 magma chambers 51 thermal gradients 51 ah dus 51 particle analyzers 51 reddish orange hue 51 overlying layers 51 Heliospheric Observatory 51 Geminid 51 aerosol particles 51 Sounder AIRS instrument 51 intrinsic brightness 51 phyllosilicates 51 Lyman alpha 51 broiling Havana 51 coronal mass ejection 51 corona discharge 51 Explosive eruptions 51 electron neutrinos 51 bubbling lava 51 aeolian 51 smoggy atmosphere 51 sunrays 51 horseshoe shaped crater 51 magma mixing 51 transiting planet 51 crater pocked 51 THEMIS Images 51 intracluster 51 midlatitudes 51 Chi Cygni 51 spectroscopic measurements 51 Venusian atmosphere 51 Superheated 51 Banerdt 51 Scheila 51 gamma rays 51 puffy cumulus clouds 51 Infrared Thermal Imaging Spectrometer 51 gamma ray bursts GRBs 51 highly collimated 51 Nasa Mars Odyssey 51 Surface Composition Spectrometer 51 gravitationally lensed 51 HiRISE camera 51 foreground galaxy 51 radiating outward 51 accretion disk 51 ray Space Telescope 51 lava spewing 51 geo synchronous 51 supergiant stars 50 polar stratospheric 50 opaline silica 50 Saturn equinox 50 earthshine 50 yellowish orange 50 Express orbiter 50 cenospheres 50 submillimetre wavelengths 50 nucleosynthesis 50 Gamma ray burst 50 PUVA psoralen plus 50 Taurids 50 Dappled 50 wavelike 50 parabolic reflectors 50 cirrus 50 corona 50 coolings 50 Cometary 50 XTE J# 50 Virgo Cluster 50 protoplanetary disc 50 rubbly 50 geosphere 50 photochemical reactions 50 hypernova 50 protoplanets 50 icy moon Enceladus 50 NASA Cassini spacecraft 50 proto planetary disks 50 planetary surfaces 50 ionize 50 Muchachos Observatory 50 star Spica 50 stellar occultations 50 RS Oph 50 protoplanetary discs 50 orbital solitude 50 antineutrinos 50 hydrated minerals 50 dragonfly wings 50 Pu ` 50 Perseids meteor shower 50 Martian rovers 50 cumulonimbus 50 spectral characteristics 50 Norris Geyser Basin 50 fainter objects 50 MGS Mars Orbiter Camera 50 antimatter particles 50 hexagonal shapes 50 infrasonic 50 Melas Chasma 50 unaided eye 50 pyroclastic surges 50 van Arkel discovery 50 horizontal slits 50 icebergs calving 50 gravitational radiation 50 spirals inward 50 substorms 50 sediments deposited 50 Jovian moons 50 duststorms 50 twin STEREO spacecraft 50 microbial mats 50 brightnesses 50 Kuiper belt objects 50 Gusev crater 50 calcite crystals 50 spinning neutron 50 gaseous planet 50 periodicities 50 protoplanet 50 meteor fireball 50 Sojourner Rover 50 celestial sphere 50 Comet NEAT 50 prograde 50 gravitational tugs 50 synchronous polar 50 colloidal crystals 50 auroras borealis 50 Anthony Remijan 50 Bob Pappalardo Cassini 50 gamma ray repeater 50 supernova remnants 50 particles emitted 50 Cygnus Lyra region 50 comet Lulin 50 Spitzer infrared spectrograph 50 constellation Pisces 50 isotherms 50 ultraviolet photons 50 galaxies nebulae 50 Ultraviolet Optical Telescope 50 greenish color 50 astrophysical objects 50 Mayon crater 50 spectral fingerprints 50 abyssal plain 50 CoRoT satellite 50 constellation Coma Berenices 50 X ray binaries 50 Supernovae 50 NASA satellites orbiting 50 mesocyclone 50 reentry capsule 50 isobars 50 Oort cloud 50 Rossby waves 50 orbiting planets 50 waning gibbous moon 50 cosmic collisions 50 fainter meteors 50 sunspot cluster 50 Palaeozoic sedimentary 50 ultraviolet wavelength 50 Descent Imager Spectral Radiometer 50 orbiting observatories 50 emitting gamma rays 50 supernova explosions 50 constellation Draco 50 Thick smoke obscured 50 submillimeter 50 fractal patterns 50 spectrographs 50 THEMIS spacecraft 50 constellation Auriga 50 radioactive nuclei 50 NGC# 50 helium ions 50 inch Samuel Oschin 50 irregularly spaced 50 gaseous methane 50 hematite mineral 50 planet HD #b 50 superfluids 50 explosive volcanism 50 SN #A 50 tropical latitudes 50 alkali atoms 50 Reiner Gamma 50 spectral fingerprint 50 comets moons 50 Cassini spacecraft orbiting 50 sunward 50 micrometer sized 50 Globular clusters 50 irregular pigmentation 50 VLTI 50 Multicolored lights 50 gamma ray radiation 50 Perseid showers 50 tidal bulge 50 Saturn Uranus 50 Shackleton crater 50 infrared ultraviolet 50 Cydonia region 50 active volcanism 50 lunar landers 50 atmospheric aerosols 50 Ultraviolet Imaging Spectrograph UVIS 50 magnetosphere 50 phreatic 50 nanobubbles 50 linearly polarized 50 HiRISE images 50 supermassive 50 irregularly shaped asteroid 50 interstellar dust particles 50 Mount Bosavi 50 Mercury exosphere 50 infrared laser beam 50 azimuthal 50 Gemini constellation 50 Electromagnetic waves 50 micrometeoroid impacts 50 Cerberus Fossae 50 infrared laser pulses 50 Sombrero Galaxy 50 Planck satellite 50 rotating neutron 50 ESO telescopes 50 Laser beams 50 baryon acoustic oscillations 50 Comet LINEAR 50 red supergiant 50 Galaxy Evolution 50 elliptical galaxy 50 martian rocks 50 Pleiades star 50 Yellowstone supervolcano 50 geothermal gradient 50 Earthward 50 ESO VLT 50 beautiful sunsets 50 haloes 50 vibrationally 50 Valles Marineris canyon 50 concentric circular 50 concave mirrors 50 Pyroclastic flows 50 sunrises sunsets 50 Pulsating 50 muon neutrino 50 constellation Puppis 50 Fig. 1a 50 bosonic 50 Delta Aquarids 50 tadpole shaped 50 synth textures 50 fractal pattern 50 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