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(Click for frequent words.) 67 galactic cosmic rays 66 energetic electrons 65 coronal hole 65 photosphere 65 geomagnetic activity 64 chromosphere 64 geomagnetic disturbances 64 solar corona 64 magnetospheric 64 moonquakes 64 auroral activity 63 polar vortex 63 occultations 63 diffuse aurora 63 X ray emission 63 airglow 63 outer corona 63 moon Io 62 Cosmic rays 62 coronal loops 62 moon Mimas 62 starquakes 62 plasmasphere 62 gamma ray flares 62 coronal mass ejections CMEs 62 ionized gases 61 auroral displays 61 planet magnetosphere 61 Solar flares 61 Saturn moon Mimas 61 Alfven waves 61 afterglows 61 X ray afterglow 61 gamma ray flashes 61 gamma ray emission 61 prominences 61 polar mesospheric clouds 61 X ray pulses 61 Quadrantid meteor shower 60 volcanic plumes 60 comet Tempel Tuttle 60 ionised gas 60 cosmic ray intensity 60 equatorial latitudes 60 Galactic cosmic rays 60 Coronal Mass Ejections 60 distant supernovas 60 jovian 60 X ray wavelengths 60 magnetic substorms 60 Ulysses spacecraft 60 solar prominences 60 Geomagnetic storms 60 Saturn magnetosphere 59 cosmic ray particles 59 gaseous planets 59 Comet Holmes 59 accretion disks 59 polar stratospheric 59 galactic disk 59 filamentary structure 59 thermal gradients 59 gravitational tides 59 Fermi telescope 59 Geminid shower 59 magnetic reconnection 59 substorm 59 electromagnetic flux 59 atmospheric turbulence 59 Heliospheric Observatory SOHO 59 elongated orbits 59 gamma rays emitted 59 spacecraft flyby 59 Orionid 59 circumstellar disk 59 Gamma ray bursts 59 Orionids 59 gravitational interaction 59 recurrent coronal hole 59 gravitational perturbations 59 anticyclonic 59 Martian dust 59 relativistic particles 59 sunspots 59 mesosphere 59 Earth ionosphere 59 circumstellar 59 MG J# +# 59 Gamma rays 59 cosmic ray flux 58 altocumulus 58 specular reflection 58 Lyrids 58 meteoritic material 58 particle acceleration 58 proplyds 58 Upsilon Andromedae 58 comets orbiting 58 rotating neutron stars 58 Noctilucent clouds 58 electrons positrons 58 RRATs 58 deep convective clouds 58 geomagnetic storms 58 Comet Tempel Tuttle 58 sunspot cluster 58 planets orbits 58 neutron radiation 58 ultraviolet radiation emitted 58 exoplanetary 58 Cassini flybys 58 emit X rays 58 galactic mergers 58 cirrus cloud 58 ultraviolet wavelengths 58 sunlike stars 58 exosphere 58 Saturn outermost 58 silicon monoxide 58 IR wavelengths 58 Quadrantids 58 geomagnetic field 58 Jupiter Ganymede 58 SNR #-#.# 58 tropospheric 58 VY Canis Majoris 58 geoeffective 58 Gamma ray 57 solar flares 57 ionized particles 57 subsurface ocean 57 ionise 57 downwelling 57 RHESSI 57 Epsilon Aurigae 57 Rossby waves 57 mesospheric 57 synchrotron x ray 57 stratus clouds 57 cyclonic circulations 57 Earth magnetotail 57 interstellar clouds 57 icy moons 57 meteoroids 57 shadowed craters 57 TGFs 57 obscuration 57 Orcus Patera 57 filamentary structures 57 moon Enceladus 57 Kuiper belt objects 57 convective storms 57 periodicities 57 supergiant star 57 gamma ray bursts GRBs 57 X ray binaries 57 stratospheric clouds 57 infrared ultraviolet 57 Earth magnetosphere 57 blue supergiant 57 cosmic ray protons 57 albedo reflectivity 57 AGNs 57 Sunspots 57 rotating updraft 57 Jupiter moon Io 57 X ray telescopes 57 gamma ray observatory 57 chlorophyll fluorescence 57 exo planets 57 stellar occultation 57 moons Europa 57 gravitational radiation 57 inner Oort Cloud 57 mantle plumes 57 Oort cloud 57 active galactic nuclei 57 GJ #b [002] 57 cosmic cannibal 57 Doppler shift 57 convective 56 Fomalhaut b 56 geothermal gradient 56 geomagnetic indices 56 retrograde orbit 56 mineral olivine 56 coronal heating 56 aurorae 56 CMB radiation 56 Dust devils 56 heliospheric 56 auroral 56 Meteor showers 56 ultraviolet sunlight 56 Seyfert galaxies 56 Gravitational waves 56 Alfvén waves 56 active galactic nucleus 56 polar latitudes 56 Ultraviolet rays 56 planetary transits 56 Orionid meteors 56 polar craters 56 gravitational pulls 56 spatially resolved 56 mesocyclone 56 Antarctic stratosphere 56 duststorms 56 cosmological distances 56 Mercury exosphere 56 gamma ray emitting 56 lunar craters 56 X rays gamma rays 56 nebular 56 Cosmic Microwave Background 56 inhomogeneous 56 coronal mass ejections 56 UV photons 56 teleconnections 56 ESA XMM Newton 56 KBOs 56 chondrules 56 glows brightly 56 sun corona 56 Saturnian moon 56 Hubble orbits 56 Microbursts 56 emitted photons 56 Geminga 56 nebulosity 56 Comet Hartley 2 56 innermost planet 56 yardangs 56 novae 56 Saturn equinox 56 interstellar cloud 56 Jovian moons 56 Eta Aquarid meteor shower 56 Jupiter Uranus 56 cryovolcanism 56 prograde 56 millimeter wavelengths 56 GRB #B 55 YORP effect 55 Bok globules 55 tidally 55 Spitzer infrared 55 icy comets 55 RS Ophiuchi 55 Galilean moons 55 substorms 55 noctilucent clouds 55 neutron beams 55 Kuiper Belt Objects 55 polarimetry 55 moonlet 55 Vertical wind shear 55 fading afterglow 55 gravitational tugs 55 astrophysical phenomena 55 axions 55 Saturn Enceladus 55 Comet Encke 55 starburst galaxies 55 periodic dimming 55 cometary debris 55 Syrtis Major 55 circularly polarized 55 cosmic microwave radiation 55 atmospheric convection 55 radiometers 55 dynamical processes 55 galactic cores 55 Saturn Cassini 55 blazar 55 Oort Cloud 55 radiative cooling 55 Tempel Tuttle 55 zodiacal dust 55 erupt explosively 55 Cherenkov radiation 55 interplanetary spacecraft 55 dust devils 55 magnetized plasma 55 protostars 55 chlorine monoxide 55 electrons protons 55 Earth orbiting satellites 55 helium nuclei 55 extrasolar 55 hydroxyl molecules 55 temperature gradients 55 THz radiation 55 protoplanetary disks 55 planetary Transits 55 KH #D 55 starburst galaxy 55 Samuel Oschin Telescope 55 infrared laser beam 55 blazars 55 infalling gas 55 LASCO imagery 55 thermally induced 55 Doppler shifts 55 telescopic observations 55 convective clouds 55 sunspot cycle 55 ultraviolet wavelength 55 geomagnetic substorms 55 active volcanism 55 helium atoms 55 Epsilon Eridani 55 Taurids 55 magnetosphere 55 galactic cosmic radiation 55 protoplanetary disk 55 Saturnian 55 HII regions 55 sunspot activity 55 backscattered 55 olivine mineral 55 GRB# 55 axial tilt 55 meteoroid impacts 55 atmospheric haze 55 Comet Halley 55 quantum mechanically 55 red supergiants 54 geomagnetic 54 Neutron stars 54 lander solar panels 54 Vourlidas 54 hydrosphere 54 hematite mineral 54 stellar occultations 54 spherical halo 54 HL Tau 54 copper oxide superconductors 54 collimated 54 jet contrails 54 Chi Cygni 54 Perseid meteors 54 capacitive coupling 54 terahertz pulses 54 circumstellar disks 54 nucleosynthesis 54 millimeter wavelength 54 spicules 54 advection 54 Coma Cluster 54 solar flares coronal 54 solar minima 54 lensing galaxy 54 periodic oscillations 54 electromagnetic signals 54 stellar nurseries 54 optical wavelengths 54 lenticular clouds 54 energetic gamma rays 54 photomultiplier tubes 54 ionized gas 54 galactic magnetic 54 magnetic fields 54 femtosecond timescale 54 tropopause 54 corona discharge 54 supercell storms 54 Explosive eruptions 54 moonlets 54 silicate dust 54 Perseus constellation 54 asteroids comets 54 Corot 9b 54 sized planets orbiting 54 Leonid meteors 54 CMEs 54 Madden Julian Oscillation 54 infrared wavelength 54 gravitational lens 54 asteroidal 54 Delta Cephei 54 atomic lattice 54 planetary orbits 54 GRB #A 54 reflection nebula 54 wavelength infrared 54 comets asteroids 54 barometric pressures 54 Arches Cluster 54 Io Europa 54 eruptive activity 54 HD#b 54 #/#Z 54 multiband imaging photometer 54 upwellings 54 tropical latitudes 54 Mud volcanoes 54 magnetic dipole 54 cosmic gamma rays 54 sunspot 54 eclipsing binaries 54 solar nebula 54 TRMM satellite 54 gamma ray radiation 54 geomagnetic storm 54 baryonic 54 Maunder Minimum 54 X ray emitting 54 Geminid meteors 54 Higgs bosons 54 meridional flow 54 Martian polar 54 Beta Pictoris b 54 highly elliptical orbits 54 IBEX spacecraft 54 exoplanets orbiting 54 Cat Paw Nebula 54 protoplanetary 54 CoRoT satellite 54 infalling 54 superluminal 54 coronal mass ejection 54 STEREO spacecraft 54 inversion layer 54 coronal loop 54 irradiance 54 Particle acceleration 54 masers 54 terahertz rays 54 highly collimated 54 Toutatis 54 magnetopause 54 TODAY Showers 54 magnetic excitations 54 planets orbiting stars 54 permanently shadowed regions 54 Great Conveyor Belt 54 Comet 9P/Tempel 1 54 submillimeter 54 constellation Hercules 54 Maunder minimum 54 X ray binary 54 solitons 54 Earth radii 54 Kelvin Helmholtz 54 quasiparticle 54 coronagraph 54 Distant galaxies 53 infrared photons 53 cavitations 53 protons collide 53 colloidal crystals 53 Candor Chasma 53 Perseus Cluster 53 collisional 53 WASP #b 53 Tharsis Rise 53 Type Ia supernovas 53 extraterrestrial UFOs 53 planets Uranus 53 basaltic lava 53 hydrated minerals 53 Evolution Explorer 53 Orion constellation 53 Coronal mass 53 Seismicity remains 53 celestial phenomena 53 magnetic flux 53 pulsations 53 eyewall replacement 53 Gamma ray bursts GRBs 53 Milankovitch cycles 53 orbital eccentricity 53 Comet Lulin 53 Jovian planets 53 constellation Aquarius 53 Mercury magnetosphere 53 cosmic strings 53 constellation Eridanus 53 solar insolation 53 aboard ESA Envisat 53 Sagittarius B2 53 magnetospheres 53 volcanic moon Io 53 lowermost mantle 53 celestial sphere 53 earthshine 53 flyby Cassini 53 infrared spectral 53 echogenic foci 53 Temperature extremes 53 gravitational acceleration 53 TrES 4 53 moons orbiting 53 supersymmetric particles 53 cosmic ray 53 synthetic aperture 53 infrared spectrometers 53 cosmic radiation 53 interstellar dust 53 downbursts 53 galaxy M# [002] 53 crystalline silicates 53 Comet Hartley 53 atmospheric oceanic 53 merging galaxies 53 upper troposphere 53 gamma ray detectors 53 Imaging Spectroradiometer MODIS instrument 53 temperature inversions 53 interplanetary magnetic 53 globulars 53 lunar perigee 53 galactic cosmic ray 53 UV wavelengths 53 Cassini flyby 53 gravity warps 53 solar irradiance 53 CMB photons 53 helium ions 53 planemos 53 intrinsic brightness 53 luminosities 53 Saturn outermost ring 53 lithium atoms 53 tectonic activity 53 red supergiant 53 dusty disks 53 Nasa spacecraft 53 Martian rovers 53 System #L 53 Milky Way halo 53 x ray beams 53 elliptical orbits 53 neutrino experiments 53 dust mote 53 spectral measurements 53 submillimetre wavelengths 53 superfluids 53 infall 53 gaseous planet 53 Upsilon Andromedae b 53 aurora 53 HiRISE image 53 inhabitable planets 53 wavefront distortion 53 lunar equator 53 monsoonal moisture 53 visible wavelengths 53 ionospheric 53 millisecond pulsar 53 particles WIMPs 53 distant galaxy clusters 53 thermosphere 53 CoRoT 9b 53 linearly polarized 53 electron diffusion 53 synchrotron emission 53 vorticity 53 gamma rays 53 electrostatic discharges 53 binary asteroid 53 impactors 53 thermal gradient 53 sodium atoms 53 HF propagation 53 volcanic tremor 53 retroreflector 52 lunar crust 52 cumulus clouds 52 comet tail 52 galactic halo 52 Lyrid meteor shower 52 VHE gamma rays 52 Quadrantid 52 planetary atmospheres 52 photon flux 52 Wolf Rayet stars 52 maser emission 52 surface plasmon 52 submillimetre 52 auroras 52 anticyclones 52 Fetal heartbeats 52 magnetotail 52 planets asteroids 52 Neptune Uranus 52 Microlensing 52 APXS 52 TONIGHT Showers 52 cosmic phenomena 52 type Ia supernova 52 absorb photons 52 Damaging wind gusts 52 atmospheric disturbances 52 ultra violet radiation 52 evanescent waves 52 Mössbauer 52 stellar seismology 52 Tycho supernova remnant 52 Bug Nebula 52 XMM Newton 52 luminous galaxies 52 Perseid shower 52 auroral emissions 52 radial velocity technique 52 nanobubbles 52 ultracold atomic 52 intertropical convergence zone 52 smallest exoplanet 52 meteoroid 52 gravitational microlensing 52 slender crescent 52 diffract 52 V# Mon 52 spatially coherent 52 interstellar dust clouds 52 Rosette Nebula 52 Jupiter magnetosphere 52 TONIGHT Partly cloudy 52 carbonate globules 52 galactic alignment 52 thermal convection 52 airbursts 52 ecliptic plane 52 TNOs 52 Surface Composition Spectrometer 52 retrograde orbits 52 Kraken Mare 52 convection currents 52 crustal thickness 52 subwavelength 52 oscillations 52 radial velocity 52 interferometric synthetic aperture radar 52 antineutrino 52 cosmic rays 52 NASA QuikScat satellite 52 Harmful algal blooms 52 gravitational interactions 52 GALEX 52 exoplanets planets outside 52 Terahertz waves 52 magnetic dynamo 52 ARPES 52 Supernovae 52 dwarf spheroidal galaxies 52 fainter objects 52 relativistic speeds 52 GJ #b [001] 52 polariton 52 electron proton 52 unmanned probes 52 WEST CENTRAL Temperatures 52 eclipsing binary 52 thruster firings 52 phyllosilicates 52 IRAS #-# 52 titania nanotubes 52 mineralogical composition 52 ultraviolet UV radiation 52 emission nebula 52 electron neutrino 52 cyclonic storms 52 nanomesh 52 Type Ia supernova 52 ITCZ 52 carbonate minerals 52 Tectonic plates 52 cirrus 52 SOHO spacecraft 52 produce colorful auroras 52 protoplanet 52 Trifid Nebula 52 shorter wavelengths 52 uncharged particles 52 GJ#b 52 water vapor condenses 52 Solar Dynamics Observatory 52 magnetar 52 atmospheric circulations 52 nebulae 52 PKS #-# 52 El Niños 52 geyser plumes 52 undersea volcanoes 52 infrared telescopes 52 Iridium satellites 52 photon fluorescence 52 Ultraviolet Imaging Spectrograph UVIS 52 earthlike planets 52 Reiner Gamma 52 distant supernovae 52 Earthlike planet 52 SN #D 52 fissure eruption 52 detect gamma rays 52 polar orbiting satellites 52 planetary magnetospheres 52 gravitational redshift 52 photoemission 52 galactic bulge 52 lightwaves 52 radiofrequency waves 52 supernova explosions 52 foreground galaxy 52 x ray beam 52 binary asteroids 52 microwave radiation 52 planetesimals 52 muon neutrinos 52 paramagnetic 52 gamma ray photons 52 Encke gap 52 microwave radiometers 52 comet nuclei 52 Dynamics Observatory 52 thin crescent 52 Aurigid 52 Helix Nebula 52 northwesterly flow 52 elliptical galaxy 52 cirrus clouds 52 zodiacal light 52 cumulonimbus 52 Magnetars 52 fluid viscosity 52 RXTE 52 Magellanic Stream 52 particles emitted 52 spheroidal 52 orbiting planets 52 microlensing events 52 supergiant stars 52 ion thrusters 52 HM Cancri 52 NASA Wilkinson Microwave 52 midlatitudes 52 scatterometer 52 planets atmospheres 52 Martian equator 52 redshifted 52 permanently shadowed craters 52 glowing corona 52 aerosol particles 51 martian atmosphere 51 cloudcover 51 Orionid meteor shower 51 radiative 51 blocks harmful ultraviolet 51 Adaptive optics 51 sonoluminescence 51 electron neutrinos 51 Veniaminof 51 piezoelectric properties 51 VB #b 51 Grímsvötn volcano 51 AB Aurigae 51 spectrographs 51 condensation nuclei 51 Eta Aquarids 51 submicrometer 51 interstellar particles 51 Gamma ray burst 51 Raman scattering 51 galaxy NGC 51 phytoplankton blooms 51 antineutrinos 51 volcanic lava flows 51 foehn 51 steering currents 51 geometric distortions 51 waxing gibbous moon 51 Astrological lore 51 -# Celsius [001] 51 spectral fingerprint 51 filamentary 51 Waterspouts 51 volcanic quakes 51 Martian craters 51 neutrino particles 51 isotope fractionation 51 fluorescence quenching 51 Saturn moon Enceladus 51 terahertz radiation 51 Aram Chaos 51 perihelion 51 interstellar medium 51 energetic cosmic rays 51 baryon 51 galactic equator 51 X ray observatories 51 HiRISE camera aboard 51 VISTA telescope 51 UV irradiation 51 electron orbits 51 optical aberrations 51 magnetic monopoles 51 meteorite impacts 51 gravitons 51 Corot 7b 51 explosive eruptions 51 Hanny Voorwerp 51 planets moons 51 orbital resonance 51 soliton 51 electronic excitations 51 accretion disk 51 exoplanets planets 51 single photon detectors 51 false contouring 51 Galilean satellites 51 isotherms 51 distant quasars 51 Comet NEAT 51 interstellar magnetic 51 Ultraviolet radiation 51 primitive meteorites 51 Scattered clouds 51 submillimeter wavelength 51 astronomical objects 51 SN #A 51 sparticles 51 epidote alteration 51 superstorms 51 volcanic activity 51 atmospheric moisture 51 vapor plume 51 circular orbits 51 cosmic ray collisions 51 thermal infrared 51 auroral oval 51 Planck satellite 51 neutrons emitted 51 intracluster 51 Cancri e 51 ice nucleation 51 faint meteors 51 solar neutrinos 51 tidal tails 51 electron ion 51 Saturn moon Iapetus 51 orbited Jupiter 51 constellation Virgo 51 X ray photons 51 Uninhabited Aerial Vehicle 51 microcavity 51 protostar 51 Venusian atmosphere 51 GZK cutoff 51 emits X rays 51 gravitational wobbles 51 interferometric 51 Subduction zones 51 ultrashort pulses 51 electron density 51 ray Space Telescope 51 diffracted 51 S#W# 51 electron bunches 51 metallicity 51 protoplanets 51 sodar 51 kaons 51 leaf wetness 51 Saharan dust 51 ecliptic 51 Submillimeter Array 51 polaritons 51 Carina constellation 51 microscopic bubbles 51 topological defects 51 Super Earths 51 Activity Forecast 51 upper tropospheric 51 constellation Aquila 51 spectroscopic measurements 51 photosynthetically 51 photometer 51 planet Gliese #g 51 Solar TErrestrial RElations Observatory 51 Type Ia 51 Type Ic supernova 51 harmful ultraviolet UV 51 Earth rotational axis 51 corona 51 meteorological phenomena 51 SMBHs 51 Geminid 51 synchronous orbit 51 extragalactic 51 Huygens descent 51 Chromatic aberration 51 crossbedding 51 ENSO cycle 51 planets orbiting distant 51 sterile neutrino 51 ionized hydrogen 51 lava fountains 51 Extrasolar planets 51 gamma ray burst 51 Fluctuating temperatures 51 TONIGHT Scattered showers 51 radial velocity method 51 Anisotropy Probe WMAP 51 Pavonis Mons 51 inhomogeneities 51 Europa Ganymede 51 globular cluster M# 51 submillimeter wavelengths 51 -# ° C [001] 51 weakly interacting 51 star Spica 51 carbonaceous chondrites 51 velocity vector 51 Infrared Thermal Imaging Spectrometer 51 tidal bulge 51 remote sensing instruments 51 planetary surfaces 51 detect gravitational waves 51 circumstellar dust 51 Philippines Mayon volcano 51 Supercell thunderstorms 51 Meteor shower 51 rubidium vapor 51 dense clumps 51 absorbs photons 51 Phased array 51 terahertz waves 51 Mott insulator 51 eccentric orbits 51 precessing 51 vaporises 51 faint galaxies 51 Saturnian moon Titan 51 perturbations 51 Heliospheric Observatory 51 planetary nebulae 51 Saturn rings 51 Ultraviolet Optical Telescope 51 thunder squalls 51 ultraviolet imaging spectrograph 51 Bose Einstein condensates 51 waxing crescent 50 ultradense 50 Atlantic Multidecadal Oscillation AMO 50 interstellar boundary 50 Crab Nebula 50 VIRTIS instrument 50 thermodynamic equilibrium 50 infrared satellite imagery 50 photochemical reaction 50 temperature gradient 50 MWIR 50 gamma ray observatories 50 waning gibbous 50 electron scattering 50 spinning neutron stars 50 Saturn moons Enceladus 50 ultracold gas 50 ESO PR 50 shortwave infrared 50 terahertz frequencies 50 Kelvin -# 50 ionospheric disturbances 50 WFPC2 50 absorbs photon 50 Geomagnetic 50 ultrasonic vibrations 50 Orion nebula 50 transiting planets 50 felsic tuff 50 comet flyby 50 geoneutrinos 50 GRBs 50 Leonid meteor 50 earth orbiting satellites 50 windward slopes 50 oscillation amplitude 50 interannual variability 50 rotational velocity 50 Ultraviolet light 50 xenon lamp 50 spews ash 50 Sounder AIRS instrument 50 planets comets 50 wispy cirrus clouds 50 Earthlike planets 50 solar radii 50 unaided eye 50 relativistic jets 50 Saturn aurora 50 tropical troposphere 50 Ringed Planet 50 constellation Gemini 50 X ray detectors 50 silicate grains 50 supernova explosion 50 galactic clusters