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(Click for frequent words.) 68 aurora 68 X ray emission 67 magnetic reconnection 67 substorm 67 auroras 67 magnetospheric 66 aurorae 66 gamma ray emission 66 solar corona 66 auroral displays 65 ionospheric 65 substorms 64 HII regions 63 convective 63 polar vortex 63 RS Ophiuchi 62 photosphere 62 afterglows 62 Cepheids 62 cryovolcanism 62 backscattered 62 ionosphere 62 ultraviolet wavelengths 62 X ray wavelengths 62 sunspot 62 eclipsing binary 61 auroral emissions 61 AGNs 61 cosmic ray 61 occultations 61 J# +# [002] 61 GRB# 61 X ray pulses 61 gamma ray burst 61 airglow 61 GRB #B 61 Earth magnetosphere 61 geomagnetic 61 photometry 60 cosmic ray flux 60 quasar 60 RRATs 60 supernovae 60 auroral activity 60 supernova remnant 60 constellation Centaurus 60 Carina constellation 60 Saturn magnetosphere 60 galactic cosmic rays 60 SN #A 60 coronal loops 60 tropospheric 60 Comet Holmes 60 mantle plumes 59 blazars 59 planetary nebulae 59 Earth ionosphere 59 gamma ray bursts 59 Gravitational waves 59 Upsilon Andromedae 59 geomagnetic disturbances 59 chromosphere 59 infrared spectral 59 geomagnetic activity 59 noctilucent clouds 59 RHESSI 59 jovian 59 periodicities 59 magnetic polarity 59 Magellanic Clouds 59 high redshift galaxies 59 type Ia supernovae 59 filamentary structure 59 luminosities 59 VIRTIS 59 Bose Einstein condensates 58 active galactic nuclei 58 diffuse aurora 58 gravitational radiation 58 nebulosity 58 exoplanetary 58 infall 58 GRBs 58 moonquakes 58 XMM Newton 58 Ulysses spacecraft 58 volcanic plumes 58 gravitational lensing 58 TGFs 58 optical spectra 58 VLTI 58 extragalactic 58 astrophysical phenomena 58 moon Enceladus 58 luminous galaxies 58 Kuiper belt objects 58 gamma ray flares 58 magnetar 58 anisotropy 58 planetary nebula 58 cosmological distances 58 binary asteroid 58 solar flares 58 energetic electrons 58 Saturn aurora 58 Composite Infrared Spectrometer 58 galactic mergers 58 magnetotail 58 COROT 58 solar prominences 58 magnetic fields 58 Astrophysical 58 lensing galaxy 58 blazar 58 polarimetry 58 solitons 58 circumstellar disks 58 transiting planets 58 Sunspots 58 inhomogeneous 58 coronal mass ejections CMEs 58 filamentary structures 58 relativistic particles 58 Gamma ray 58 Cepheid variables 58 moon Mimas 58 spectroscopic measurements 58 stellar occultations 58 occultation 58 millimeter wavelengths 58 velocity dispersion 57 magnetosphere 57 coronal mass ejections 57 spectroscopically 57 HD# [002] 57 elliptical galaxy 57 cosmic ray intensity 57 proplyds 57 infrared wavelength 57 moon Io 57 circumstellar 57 Epsilon Aurigae 57 ionized gases 57 accretion disk 57 planetary transits 57 RXTE 57 Orionid 57 supersymmetric particles 57 Fermi telescope 57 Mpc 57 Cherenkov radiation 57 Earth magnetotail 57 Type 1a supernovae 57 sunspots 57 GALEX 57 optical wavelengths 57 Orionids 57 Doppler shifts 57 vorticity 57 Red Rectangle 57 Type Ia 57 Cosmic Microwave Background 57 heliospheric 57 galactic disk 57 electron neutrinos 57 starburst galaxies 57 supernova remnants 57 astrophysical 57 gravitational waves 57 novae 57 micron wavelengths 57 galaxy cluster 57 galactic alignment 57 planet magnetosphere 57 exoplanets orbiting 57 Comet Halley 57 reionization 57 Lyman alpha 57 masers 57 ESO PR 57 dynamical processes 57 sodium atoms 57 cosmic ray particles 57 Type Ia supernovas 57 dipolar 57 Magellanic Stream 57 astrometry 57 galaxy NGC 57 electron diffusion 57 supernova explosions 57 dynamical 57 amplitudes 57 active galactic nucleus 57 distant quasars 56 aurora borealis 56 starquakes 56 CMEs 56 stellar occultation 56 Mott insulator 56 Wolf Rayet stars 56 submillimeter 56 coronal holes 56 Hubble observations 56 AB Aurigae 56 spiral galaxy NGC 56 magnetospheres 56 arcminutes 56 volcanism 56 oscillations 56 weak gravitational lensing 56 Alfvén waves 56 ionized hydrogen 56 Rosette Nebula 56 nebular 56 geomagnetic storms 56 Corot 9b 56 zodiacal light 56 blue supergiant 56 particle acceleration 56 constellation Cassiopeia 56 millisecond pulsar 56 ejecta 56 interferogram 56 starburst galaxy 56 gravitational lens 56 Epsilon Eridani 56 NASA Wilkinson Microwave 56 Helix Nebula 56 photoemission 56 thrust faulting 56 Geminga 56 Gamma ray bursts 56 inhomogeneities 56 Encke gap 56 coronagraph 56 prominences 56 absorption spectra 56 elongated orbits 56 polariton 56 surface plasmons 56 noctilucent 56 electromagnetic flux 56 coronal hole 56 interstellar clouds 56 Jupiter magnetosphere 56 X ray binary 56 coronal heating 56 Sagittarius B2 56 crustal thickness 56 coronal mass ejection 56 magnetic substorms 56 midlatitudes 56 reflection nebula 56 X ray afterglow 56 extrasolar planetary systems 56 exosphere 56 keV 56 oscillatory 56 Orion Nebula 56 spatially resolved 56 interferometric 56 mesoscale 56 Seyfert galaxies 56 Type Ia supernova 56 Carina Nebula 55 Ring Nebula 55 supergiant star 55 magnetic monopoles 55 sundog 55 microlensing events 55 supergiant stars 55 transiting planet 55 Jupiter moon Io 55 SNR #-#.# 55 GRB # 55 microlensing 55 HM Cancri 55 diffraction patterns 55 KH #D 55 quasars 55 distant galaxies 55 X ray telescopes 55 mid latitudes 55 Saturn moon Enceladus 55 distant quasar 55 upper troposphere 55 infalling 55 R Coronae Borealis 55 ESO VLT 55 visible wavelengths 55 Geomagnetic storms 55 GJ #b [002] 55 circularly polarized 55 nebula 55 astronomical objects 55 electron density 55 Rossby waves 55 spiral galaxies 55 sun corona 55 stellar seismology 55 distant galaxy clusters 55 earthshine 55 PKS #-# 55 Alfven waves 55 Milky Way halo 55 orbiting gamma ray 55 gravitational microlensing 55 galactic bulge 55 Saturnian moons 55 Trifid Nebula 55 gamma rays 55 UVIS 55 Saturn auroras 55 convective clouds 55 brightnesses 55 Kuiper Belt Objects 55 Voorwerp 55 cosmic strings 55 Quadrantid meteor shower 55 lowermost mantle 55 sunspot activity 55 radial velocity 55 gamma ray emitting 55 vortices 55 ESO telescopes 55 supernova SN 55 Delta Cephei 55 KBOs 55 V# Mon 55 infrared wavelengths 55 Spectrograph 55 Bullet Cluster 55 Evolution Explorer 55 THEMIS satellites 55 polar latitudes 55 type Ia supernova 55 spectrometric 55 atmospheric phenomena 55 Fomalhaut b 55 circumstellar disk 55 de Pater 55 ionized gas 55 red supergiant 55 X ray binaries 55 Virgo Cluster 55 muon neutrinos 55 constellation Aquarius 55 axions 55 intrinsic brightness 55 astrophysical objects 55 interacting galaxies 55 sunlike stars 55 VY Canis Majoris 55 ULIRGs 55 spectral bands 55 pointings 55 ionised gas 54 Saturn rings 54 supersolid 54 Diviner 54 cluster NGC 54 Cosmic rays 54 Stephan Quintet 54 diffraction pattern 54 gravitational lenses 54 phonon 54 Doppler shift 54 baryon 54 meridional flow 54 spicules 54 galaxy formation 54 quasiparticle 54 collisional 54 gamma ray flashes 54 Quadrantids 54 gamma ray observatory 54 protostars 54 Digitized Sky Survey 54 Jupiter Uranus 54 coronal loop 54 Noctilucent clouds 54 Milankovitch cycles 54 cosmic microwave background 54 planets orbits 54 CoRoT satellite 54 vibrational modes 54 periodic oscillations 54 starbursts 54 microquasar 54 nucleosynthesis 54 mesosphere 54 superfluid 54 Higgs bosons 54 comet tail 54 Solar flares 54 cm -1 54 galaxies 54 Enceladus 54 Quadrantid 54 Comet Hartley 54 supernova 54 WFPC2 54 interferometry 54 ESO telescope 54 interstellar dust clouds 54 Syrtis Major 54 merging galaxies 54 SDSS II 54 LASCO imagery 54 superposed 54 metallicity 54 Saturn outermost 54 retrograde orbit 54 infrared radiation 54 NASA Cassini spacecraft 54 SNe 54 polar mesospheric clouds 54 moonlets 54 femtosecond timescale 54 Younger Dryas 54 GRB 54 protoplanetary disks 54 Type Ia supernovae 54 extrasolar 54 comet McNaught 54 Nernst 54 Eta Carinae 54 X ray emitting 54 nuclei 54 exoplanet orbiting 54 polarimetric 54 planets orbiting distant 54 NGC# 54 ultracold atoms 54 Type Ic supernova 54 cosmic rays 54 binary quasar 54 sonoluminescence 54 waxing gibbous moon 54 HiRISE image 54 Reiner Gamma 54 HD#b 54 protoplanetary disk 54 spacecraft flyby 54 galactic cores 54 excitons 54 stellar nurseries 54 SOHO spacecraft 54 neutron star 54 millisecond pulsars 54 CMB radiation 54 HD# [005] 54 arcsec 54 ray Space Telescope 54 quantum tunneling 54 Gamma ray burst 54 dI dV 54 Voyager spacecraft 54 infrared spectra 54 SN #E 54 sterile neutrino 54 Orion nebula 54 THEMIS 53 redshift 53 galactic magnetic 53 asteroseismology 53 spectroscopic observations 53 celestial sphere 53 axial tilt 53 absorbs photons 53 Magnetars 53 Cepheid variable 53 pulsars 53 attosecond 53 elliptical galaxies 53 #P/Holmes 53 spacetime 53 WASP #b 53 Venusian atmosphere 53 gamma ray bursts GRBs 53 z ~ 53 AKARI 53 interstellar dust 53 sunspot cycle 53 superfluids 53 intracluster 53 Small Magellanic Cloud 53 nightside 53 ESA Cluster 53 Comet Hartley 2 53 Keck Telescope 53 UVOT 53 Crab Nebula 53 solar irradiance 53 moonlet 53 planemos 53 celestial objects 53 gamma ray 53 SNe Ia 53 spectra 53 bosonic 53 plasmasphere 53 Active Galactic Nuclei 53 azimuthal 53 nebulae 53 YORP effect 53 Lagoon Nebula 53 solar nebula 53 CoRoT 53 laser pulses 53 globular cluster M# 53 Supernovae 53 VHE gamma rays 53 INMS 53 muon neutrino 53 Fig. 1b 53 galaxy M# [002] 53 Comet Machholz 53 detect gamma rays 53 Gaensler 53 geomagnetic substorms 53 chemical abundances 53 Supernova #A 53 dwarf spheroidal galaxies 53 SN #gy 53 Titan flyby 53 Triangulum Galaxy 53 planets moons 53 distant supernovae 53 constellation Virgo 53 2MASS 53 supernova explosion 53 Kelvin Helmholtz 53 obscuration 53 nightglow 53 ionized particles 53 Coma Cluster 53 situ measurements 53 TRMM satellite 53 geomagnetic storm 53 ultraviolet radiation emitted 53 interstellar medium 53 prograde 53 P/# A2 53 pseudogap 53 excitations 53 Maunder minimum 53 gamma rays emitted 53 Saturnian 53 De Pontieu 53 TrES 53 Orion constellation 53 Hanny Voorwerp 53 meteoroid 53 XMM Newton observations 53 diffract 53 fainter objects 53 solar minima 53 fermionic 53 spiral nebulae 53 ESO Paranal Observatory 53 magnetars 53 ARPES 53 isotherms 53 Auroral 53 coronal 53 cosmic ray protons 53 Ultraviolet Imaging Spectrograph UVIS 53 pulsating aurora 53 interferometric observations 53 Geomagnetic 53 Wilkinson Microwave Anisotropy Probe 53 mesospheric 53 Bug Nebula 53 diffracted 53 emission nebula 53 exo planets 53 radiative cooling 53 geomagnetic field 53 globulars 53 CoRoT 9b 53 cirrus cloud 53 galaxy clusters 53 grabens 53 QCLs 53 FUV 53 celestial phenomena 53 red supergiants 53 Oort Cloud 53 Rayleigh scattering 53 comet Tempel Tuttle 53 Eagle Nebula 53 Pegasi 53 millimeter wavelength 53 electron flux 53 icy moons 53 magma chambers 53 Beta Pictoris b 53 Perseid meteor 53 SN#A 53 Lyrids 52 thermal gradients 52 photometer 52 relativistic protons 52 astronomical observations 52 seismograms 52 hydrosphere 52 trimers 52 Infrared Mapping Spectrometer VIMS 52 dipole moment 52 Herbig Haro 52 volcanic aerosols 52 cometary debris 52 poleward 52 spherically symmetric 52 planetary nebulas 52 gravitational interaction 52 constellation Carina 52 extrasolar planets 52 Microlensing 52 ecliptic 52 superluminal 52 faint galaxies 52 TrES 4 52 rotating neutron stars 52 astronomers 52 Hipparcos 52 Keck Interferometer 52 redshifts 52 Geminid shower 52 polar stratospheric 52 Saturn moon Iapetus 52 tau neutrino 52 wavefunction 52 dipoles 52 retrograde orbits 52 Taurids 52 convective storms 52 Mössbauer 52 Comet NEAT 52 geomagnetism 52 Cassini flyby 52 protostar 52 supernovas 52 NICMOS 52 neutrino oscillations 52 cosmic phenomena 52 Arabia Terra 52 constellation Eridanus 52 MG J# +# 52 microsaccades 52 helium ions 52 tropopause 52 starlight 52 advection 52 gravitational tides 52 Substorms 52 occulted 52 femtosecond pulses 52 baryonic 52 fractal pattern 52 quasicrystal 52 fissure eruption 52 circumstellar dust 52 GJ #b [001] 52 emit X rays 52 quantum oscillations 52 Earthlike planets 52 lunar perigee 52 basaltic rocks 52 anticyclonic 52 pulsar 52 interstellar magnetic 52 Saturn equinox 52 submillimeter wavelength 52 GRB #A 52 Crab Pulsar 52 precessing 52 chondrules 52 celestial object 52 habitable planets 52 shorter wavelengths 52 GQ Lupi 52 Geminids meteor shower 52 magnetic excitations 52 OGLE TR 52 globular cluster 52 RS Oph 52 emitted photons 52 Fig. 1A 52 magnetic 52 eruptive activity 52 WMAP satellite 52 carbonaceous chondrites 52 atmospheric aerosols 52 atmospheric circulation 52 earthlike planets 52 Andromeda galaxy 52 Iapetus 52 magmatic 52 galaxy redshift 52 photochemical reactions 52 Epsilon Indi 52 Madden Julian Oscillation 52 backscattering 52 GZK cutoff 52 meridional 52 spectral characteristics 52 arcseconds 52 unaided eye 52 teleconnections 52 fermion 52 Orionid meteors 52 Telescope BAT 52 corona 52 redshifted 52 HESS telescopes 52 polaritons 52 comet Hale Bopp 52 Fornax cluster 52 Konacki 52 Comet #P/Holmes 52 Trapezium 52 transiting exoplanets 52 magnetic flux 52 gravitationally lensed 52 Galilean satellites 52 Mimas 52 latitudinal 52 LOFAR 52 gamma ray detectors 52 Fomalhaut 52 SMBH 52 GeV 52 SINFONI 52 globular clusters 52 Saturnian moon 52 Coronal Mass Ejections 52 Planck satellite 52 hydrothermal activity 52 Southern Oscillation 52 tectonic movements 52 Comet Encke 52 WMAP 52 neutron stars 52 accretion disks 52 planetary magnetospheres 52 Pleiades cluster 52 Wolf Rayet star 52 Earth radii 52 interstellar boundary 52 Scorpii 52 Gliese #c 52 planet Uranus 52 supermassive black hole 52 planetary atmospheres 52 microwave photons 52 haloes 52 Tau Ceti 52 dust enshrouded 52 Hubble Space Telescope HST 52 SCP #F# 52 Geminid 52 Perseus constellation 52 electron diffraction 52 Raman scattering 52 Methone 52 constellation Andromeda 52 neutrino 52 Saturn auroral 52 ultraviolet imaging spectrograph 52 wavelengths 52 rifting 52 Jenniskens 51 interstellar cloud 51 submillimetre 51 constellation Sagittarius 51 cosmic microwave radiation 51 gravitational perturbations 51 Cat Paw Nebula 51 magnon 51 linearly polarized 51 sulfur isotope 51 cirrus 51 supernovae explosions 51 galaxies collide 51 magnetization 51 constellation Perseus 51 spectrographs 51 gravitational wave 51 tropical troposphere 51 Solar Dynamics Observatory 51 downwelling 51 irradiance 51 Spitzer infrared 51 pulsations 51 equatorial 51 periodic dimming 51 polar 51 crustal 51 gravitational interactions 51 faraway galaxies 51 detect gravitational waves 51 AU Mic 51 Mercury exosphere 51 Kuiper belt 51 infrared astronomy 51 zodiacal dust 51 collimated 51 Gal Yam 51 solar radii 51 particle detectors 51 multiwavelength 51 Arches Cluster 51 UV wavelengths 51 STEREO spacecraft 51 BP Psc 51 numerical simulations 51 Saturn moon Mimas 51 supermassive 51 electroweak 51 Galactic Plane 51 SUSY 51 elliptical galaxy NGC 51 wavebands 51 Oscillations 51 dwarf galaxy 51 filaments 51 electron tunneling 51 ejecta blanket 51 VLBA 51 Hawking radiation 51 Caloris 51 electron positron 51 Delta Aquarids 51 mesocyclone 51 theta oscillations 51 paleomagnetic 51 Submillimeter Array 51 Aurigae 51 arcsecond 51 spectral measurements 51 Anisotropy Probe 51 N#E# 51 isotropic 51 VISTA telescope 51 Ultraviolet Optical Telescope 51 plasmons 51 X ray spectroscopy 51 Bok globules 51 Valles Marineris 51 NASA QuikScat satellite 51 HARPS instrument 51 terrestrial gamma ray 51 T2 weighted images 51 magmatism 51 telescopic observations 51 gamma ray photons 51 Sunspot 51 interannual variability 51 surface plasmon 51 mantle convection 51 WIMPs 51 convection 51 Saturn innermost 51 galactic equator 51 proton proton collisions 51 helicity 51 Andromeda Galaxy 51 geothermal gradient 51 Kuiper Belt objects 51 retroreflector 51 energetic gamma rays 51 IRAS #-# 51 HD #b [002] 51 SOHO LASCO 51 Eta Aquarids 51 compressional 51 Computer simulations 51 Pluto Charon 51 neutrino mass 51 Type Ic supernovae 51 heliosheath 51 plasmon 51 foreshocks 51 Magnetospheric 51 magnetized plasma 51 circularly polarized light 51 antineutrinos 51 interferograms 51 terahertz waves 51 barred spiral galaxy 51 Milankovitch 51 spatial scales 51 atmospheric disturbances 51 linearly polarized light 51 Planck telescope 51 evanescent waves 51 radiometers 51 distant galaxy 51 ecliptic plane 51 temperature gradients 51 Cygnus X 51 aerosol concentrations 51 electron positron pairs 51 Feshbach resonance 51 Brownian motion 51 giant elliptical galaxy 51 carbonate minerals 51 wrinkle ridges 51 auroras borealis 51 constellation Bootes 51 sparticles 51 Brillouin 51 twin STEREO spacecraft 51 photoelectron spectroscopy 51 cometary 51 phosphorescence 51 superstrings 51 ringed planet 51 Henize #-# 51 smallest exoplanet 51 photoelectron 51 NEAs 51 mineralogical composition 51 Corot 7b 51 synthetic aperture 51 neutron spectrometer 51 elliptical orbits 51 Earth orbiting satellites 51 exoplanetary systems 51 colliding galaxies 51 collinear 51 magnetisation 51 microwave radiation 51 HF propagation 51 Orionid meteor shower 51 auroral oval 51 lobate scarps 51 foreground galaxy 50 Cosmic Microwave Background CMB 50 X ray observatories 50 planetary Transits 50 planets orbiting 50 volcanic activity 50 Fermi Gamma ray 50 Mini SAR 50 asteroidal 50 interferometers 50 phonons 50 tidal tails 50 circular orbits 50 intraplate 50 Explorer WISE 50 THz radiation 50 constellation Hercules 50 ENSO cycle 50 post perovskite 50 perturbation 50 aeolian 50 heliosphere 50 ESA Herschel 50 spectroscopic analysis 50 fluorescent nanoparticles 50 photometric 50 troposphere 50 planetary conjunctions 50 radiative 50 Higgs particle 50 Gemini constellation 50 infrared interferometry 50 galactic halo 50 protoplanetary discs 50 Meteor showers 50 x ray beams 50 constellations Cygnus 50 Elenin 50 Pleiades star 50 magnetopause 50 distant supernovas 50 Trifid 50 Particle acceleration 50 ROSAT 50 Tharsis Rise 50 electron spins 50 atmospheric turbulence 50 Spectroscopic 50 submillimeter wavelengths 50 radiative transfer 50 hydrated electron 50 optical interferometry 50 galaxy M# [001] 50 Meteor shower 50 constellation Leo 50 high temperature superconductivity 50 constellation Ursa Major 50 magnetoresistance 50 Saturn outermost ring 50 constellation Orion