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(Click for frequent words.) 73 Gamma rays 69 cosmic rays 69 energetic electrons 69 galactic cosmic rays 68 cosmic ray particles 67 Galactic cosmic rays 65 Solar flares 64 active galactic nuclei 64 meteoroids 64 Neutron stars 64 Gamma ray bursts 63 gamma rays 62 ionized gases 62 coronal holes 62 asteroids comets 62 Alfven waves 62 icy comets 62 accretion disks 61 galactic disk 61 electrons protons 61 ionized particles 61 comets asteroids 61 electrons positrons 61 interstellar clouds 61 gamma rays emitted 60 inner Oort Cloud 60 Gravitational waves 60 highly elliptical orbits 60 chromosphere 60 Comet Tempel Tuttle 60 sunlike stars 60 solitons 60 comets orbiting 60 elongated orbits 60 energetic cosmic rays 60 Rossby waves 59 magnetospheric 59 terahertz waves 59 particles WIMPs 59 icy moons 59 TGFs 59 moonquakes 59 comet Tempel Tuttle 59 diffract 59 coronal mass ejections CMEs 59 Photons 59 ionised 59 protoplanetary disks 59 synchrotron x ray 59 blazar 59 X ray wavelengths 59 gaseous planets 59 cosmic ray 59 Noctilucent clouds 59 blazars 59 AGNs 59 coronal loops 59 X ray binaries 59 Muons 59 Ultraviolet rays 59 chondrules 59 cosmic radiation 58 transiting planets 58 helium atoms 58 solar neutrinos 58 UV photons 58 Bok globules 58 exoplanetary 58 Kuiper belt objects 58 photochemical reactions 58 sodium atoms 58 Neutrinos 58 periodic dimming 58 X rays gamma rays 58 magnetic fields 58 Meteor showers 58 alpha particles 58 ultraviolet wavelengths 58 Earth ionosphere 58 oppositely directed 58 Doppler shifts 58 electron neutrinos 58 ionised gas 58 Weakly Interacting Massive Particles 58 Higgs bosons 58 micrometeoroids 58 axions 58 helium nuclei 58 Hot Jupiters 58 Martian dust 58 gravitational tides 58 infrared photons 58 X ray pulses 58 frequency electromagnetic waves 57 Magnetars 57 auroral displays 57 interstellar dust clouds 57 red supergiants 57 ionized molecules 57 Carina constellation 57 Nitrogen oxides 57 cosmic particles 57 electromagnetic flux 57 emit X rays 57 galactic cosmic ray 57 planets orbiting stars 57 cometary debris 57 impactors 57 galactic bulge 57 galactic halo 57 planetary orbits 57 rotating neutron stars 57 neutralinos 57 magnetosphere 57 Corot 9b 57 transiting exoplanets 57 volcanic plumes 57 antimatter particles 57 Cosmic ray 57 Fermi telescope 57 magnetars 57 solar corona 57 afterglows 57 infalling 57 particles emitted 57 MG J# +# 57 gamma ray emission 57 gravitational pulls 57 Extrasolar planets 57 circumstellar 57 energetic gamma rays 57 planets orbits 57 galactic cores 57 gamma ray flashes 57 distant quasars 57 hypernova 57 mesosphere 57 exosphere 57 ionized gas 57 Epsilon Eridani 56 X ray emission 56 interstellar particles 56 silicon monoxide 56 orbiting planets 56 diffuse aurora 56 retrograde orbits 56 extrasolar 56 luminous galaxies 56 coronal mass ejections 56 silicate dust 56 proplyds 56 excitations 56 Saturn magnetosphere 56 ionise 56 Upsilon Andromedae b 56 Oort Cloud 56 cosmic phenomena 56 asteroid collisions 56 microwave radiation 56 gamma ray photons 56 exoplanets orbiting 56 solar flares 56 Samuel Oschin Telescope 56 KBOs 56 relativistic jets 56 Explosive eruptions 56 Orionid 56 protostars 56 plasmasphere 56 Earth orbiting satellites 56 Supernovae 56 antiprotons 56 antineutrinos 56 VHE gamma rays 56 muons 56 Kuiper Belt Objects 56 Microbursts 56 HD#b 56 millisecond pulsars 56 WIMPs 56 HII regions 56 noctilucent clouds 56 gamma ray flares 56 ultra violet radiation 56 supergiant stars 56 muon neutrinos 56 aerosol particles 56 hematite mineral 56 olivine mineral 56 asteroids 56 sulfate aerosols 56 ionize 56 starquakes 56 GRBs 56 geomagnetic storms 56 Geminga 56 planet magnetosphere 56 supersymmetric particles 56 jovian 55 ionosphere 55 relativistic particles 55 stellar nurseries 55 Beta Pictoris b 55 lightwaves 55 particles 55 radioactive nuclei 55 gravitational radiation 55 comets 55 circumstellar disks 55 distant supernovae 55 millimeter wavelength 55 planetary nebulae 55 Electromagnetic waves 55 Ulysses spacecraft 55 planet HD #b 55 spherically symmetric 55 cosmic gamma rays 55 nebular 55 fainter objects 55 detect gamma rays 55 Orionids 55 Martian rovers 55 Jupiter Saturn 55 distant galaxies 55 gravitational tugs 55 exo planets 55 infalling gas 55 cosmic ray collisions 55 protoplanetary 55 electron beams 55 uncharged particles 55 cosmic neutrinos 55 ejecta 55 hydrogen nuclei 55 circular orbits 55 Nasa spacecraft 55 starburst galaxies 55 meteoritic material 55 electromagnetic signals 55 protons collide 55 Kuiper Belt objects 55 optical wavelengths 55 ultraviolet photons 55 atomic nuclei 55 airbursts 55 GZK cutoff 55 retrograde orbit 55 GJ #b [002] 55 IntergalaticEarth 55 Earthlike planet 55 millimeter wavelengths 55 icy moon Enceladus 55 magnetic substorms 55 cosmological distances 55 backscattered 55 Cherenkov radiation 55 carbonaceous chondrites 55 planets circling stars 55 Laser beams 55 atomic particles 55 globulars 55 planets orbiting sun 55 terahertz rays 55 VY Canis Majoris 55 planemos 55 neutrino particles 55 moon Mimas 55 Perseus Cluster 54 planets orbiting distant 54 auroral 54 Antennae Galaxies 54 intrinsic brightness 54 erupt explosively 54 THz radiation 54 accretion disk 54 interstellar dust 54 subatomic particles 54 situ measurements 54 planetary magnetospheres 54 earthlike planets 54 supernova explosions 54 submillimeter 54 cosmic ray flux 54 X ray spectrometer 54 quasars 54 cirrus clouds 54 brightest meteors 54 helium ions 54 electromagnetic waves 54 Terahertz waves 54 inhabitable planets 54 gamma ray observatory 54 gamma ray bursts 54 interstellar medium 54 galactic cosmic radiation 54 martian atmosphere 54 filamentary structure 54 spectral fingerprint 54 baryonic matter 54 silicate minerals 54 RS Ophiuchi 54 electromagnetic radiation 54 precess 54 magnetic monopoles 54 protoplanetary disk 54 meteorite impacts 54 emits X rays 54 Jovian moons 54 Epsilon Aurigae 54 jet contrails 54 gamma ray bursts GRBs 54 meteoroid 54 chlorine monoxide 54 aurorae 54 wispy cirrus clouds 54 Sagittarius dwarf galaxy 54 neutron radiation 54 magnetotail 54 neutrons 54 hot Jupiters 54 mantle plumes 54 hydroxyl molecules 54 ultraviolet sunlight 54 supermassive 54 cosmic ray intensity 54 gravitational waves 54 faint galaxies 54 prograde 54 Ultraviolet light 54 photosphere 54 eccentric orbits 54 constellation Hercules 54 active galactic nucleus 54 particle acceleration 54 Earth magnetotail 54 planets asteroids 54 superfluids 54 astrophysical phenomena 54 SMBH 54 extrasolar planets orbiting 54 protoplanets 54 planetary embryos 54 Jupiter magnetosphere 54 outer corona 54 baryon 54 infra red radiation 53 planetoids 53 tropical latitudes 53 airglow 53 gamma rays X rays 53 Ultraviolet radiation 53 giant gaseous planets 53 relativistic speeds 53 dense neutron stars 53 auroras 53 substorms 53 atmospheric turbulence 53 excitons 53 Saturn moon Enceladus 53 Type Ia supernovas 53 moons circling 53 Subatomic particles 53 prominences 53 harmful ultraviolet radiation 53 ionizing 53 graphite whiskers 53 Saturn moon Mimas 53 lensing galaxy 53 neutron stars 53 downwelling 53 colliding protons 53 particle beams 53 infrared wavelength 53 proto planetary disk 53 Gamma ray bursts GRBs 53 masers 53 HD# [002] 53 geomagnetic field 53 photons 53 magnetic reconnection 53 Gemini constellation 53 magnetospheres 53 particle colliders 53 planetary atmospheres 53 Jupiter Ganymede 53 AB Aurigae 53 HESS telescopes 53 Pyroclastic flows 53 dimming starlight 53 X ray binary 53 sized planets orbiting 53 quantum mechanically 53 Earth radii 53 distant supernovas 53 orbiting Cassini spacecraft 53 spherical halo 53 Galilean moons 53 electron positron 53 microquasar 53 Shallow earthquakes 53 emit photons 53 electromagnetic frequencies 53 dusty disks 53 magnetic excitations 53 Radioactive substances 53 gravitational interactions 53 extragalactic 53 micro meteorites 53 permanently shadowed craters 53 Planetary nebulae 53 diffracted 53 gluon 53 midlatitudes 53 terahertz radiation 53 visible wavelengths 53 pions 53 solar prominences 53 cosmic cannibal 53 metallicity 53 highly magnetized neutron 53 dirty snowballs 53 tau neutrinos 53 W bosons 53 RRATs 53 moon Io 53 quasiparticles 53 ionized hydrogen 53 Solar TErrestrial RElations Observatory 53 Tempel Tuttle 53 gamma ray photon 53 NEAs 53 optical telescopes 53 smallest exoplanet 53 emits photons 53 meteoroid impacts 53 brown dwarfs 53 infrared spectrometers 53 moons orbiting 53 faraway galaxies 53 blue supergiant 53 polar mesospheric clouds 53 rubidium vapor 53 supernova remnants 53 emit photon 53 silicate grains 53 particle detectors 53 emit gamma rays 53 planets atmospheres 53 electrons 53 antiparticles 53 ENAs 53 primitive meteorites 53 galaxy M# [002] 53 shadowed craters 53 spinning neutron stars 53 Wolf Rayet stars 53 Type Ia supernova 53 elliptical orbits 53 Mandushev 52 meteor impacts 52 tidally 52 interplanetary spacecraft 52 X ray photons 52 Neutrons 52 cometary dust 52 exosolar planets 52 infrared telescopes 52 inhomogeneous 52 relativistic protons 52 HM Cancri 52 planets comets 52 Manned missions 52 nebulae 52 Cancri e 52 shorter wavelengths 52 X ray emitting 52 micrometeoroid impacts 52 spiral nebulae 52 electrons behave 52 Geminid meteors 52 ultraviolet radiation 52 albedo reflectivity 52 surface plasmons 52 proton collisions 52 silicates 52 Dust devils 52 moonlets 52 X ray telescopes 52 stony meteorites 52 hypersonic speeds 52 Evolution Explorer 52 dwarf spheroidal galaxies 52 binary asteroid 52 supernovae explosions 52 tidal tails 52 Aurigid 52 protoplanet 52 CoRoT 9b 52 solar nebula 52 Soot particles 52 mineral hematite 52 convection currents 52 type Ia supernova 52 pulsars 52 volcanic moon Io 52 Earthlike 52 cometary material 52 x ray beam 52 Rydberg atom 52 WASP #b 52 diamagnetic 52 volcanic lava flows 52 ultracold atoms 52 Electrons 52 Greenhouse gases trap 52 outer planets 52 gamma ray burst 52 habitable planets 52 Venusian atmosphere 52 Gamma ray 52 Saturn aurora 52 electronic excitations 52 dense clumps 52 Mate Adamkovics 52 protostar 52 OGLE TR #b 52 carbonate minerals 52 CMB photons 52 submillimeter galaxies 52 glows brightly 52 Saturn rings 52 spicules 52 thermal gradients 52 Michael Flasar 52 stellar occultations 52 diffracting 52 constellation Aquarius 52 ionized oxygen 52 Io volcanoes 52 RHESSI 52 exoplanet orbiting 52 planet WASP #b 52 gamma ray detectors 52 neutrinos 52 extrasolar worlds 52 atmospheric aerosols 52 GJ#b 52 mineral olivine 52 Hawking radiation 52 hydrogen helium 52 magnetopause 52 electrons emitted 52 Mercury magnetosphere 52 unmanned probes 52 protoplanetary discs 52 Tiny particles 52 Astrophysicists 52 terrestrial planets 52 transiting planet 52 strangelets 52 sterile neutrinos 52 circumstellar disk 52 Coronal mass 52 CDMS experiment 52 spectral fingerprints 52 Earthlike planets 52 weakly interacting 52 frequency electromagnetic 52 planetary Transits 52 Gamma ray burst 52 earth orbiting satellites 52 ray Space Telescope 52 Polycyclic aromatic hydrocarbons 52 planets 52 crystalline silicates 52 ESA XMM Newton 52 rubidium atom 52 substorm 52 Elemental mercury 52 Neptune Uranus 52 renowned astrophysics observatory 52 Comet Hartley 52 neutron spectrometer 52 thermonuclear reactions 52 Bill Borucki Kepler 52 Virgo Cluster 52 planets astronomers 52 occultations 52 hypervelocity stars 52 Fermions 52 emits gamma rays 52 aboard ESA Envisat 52 Cosmic Microwave Background 52 exoplanets planets 52 HD #b [002] 52 gravitons 52 Helix Nebula 52 foreground galaxy 52 infrared radiation 52 observable universe 52 Earth magnetosphere 51 basaltic rocks 51 duststorms 51 bosons 51 gravitational wobbles 51 Supermassive black 51 CMB radiation 51 Perseid meteors 51 permanently shadowed 51 Mud volcanoes 51 interstellar dust grains 51 WISE spacecraft 51 cosmic ray particle 51 GRB #B 51 astronomical objects 51 red supergiant 51 moon Enceladus 51 Gliese #c 51 eclipsing binaries 51 dust enshrouded 51 filamentary structures 51 plasmons 51 Perseus constellation 51 metallic nanostructures 51 neutron star 51 Type 1a supernovae 51 redshifted 51 spiral galaxies 51 tholins 51 MESSENGER MErcury Surface 51 quantum tunneling 51 comet orbit 51 ion thrusters 51 photons emitted 51 Saturnian moon Titan 51 Milky Way halo 51 merging galaxies 51 constellation Perseus 51 Alfvén waves 51 Spiral galaxies 51 BP Piscium 51 linearly polarized light 51 dust particles 51 Waterspouts 51 Saturn Enceladus 51 novae 51 X ray observatories 51 spectral measurements 51 geothermal gradient 51 undersea volcanoes 51 rubidium atoms 51 assumed planets circling 51 Saturn auroras 51 argon atoms 51 comet nucleus 51 ion collisions 51 super Earths 51 geoneutrinos 51 fading afterglow 51 photomultiplier tubes 51 infall 51 galaxies nebulae 51 polarimetry 51 axial tilt 51 Orionid meteors 51 THEMIS satellites 51 moons Phobos 51 CAIs 51 GALEX 51 Fungus gnats 51 interstellar dust particles 51 galaxies 51 Sunspots 51 proton neutron 51 diffraction patterns 51 Trojan asteroids 51 alpha particle 51 silicate rocks 51 polar vortex 51 momenta 51 planetary transits 51 Lyman alpha 51 gravitationally bound 51 oxygen ions 51 AU Mic 51 radial velocity method 51 molten magma 51 aerosol concentrations 51 hadrons 51 radiations 51 Saturnian moons 51 ultraviolet UV radiation 51 ULP cepheids 51 supervolcanoes 51 V# Mon 51 Milankovitch cycles 51 solar radii 51 baryonic 51 radioactive decay 51 photosynthesising 51 lunar craters 51 ionized atoms 51 femtosecond timescale 51 habitable worlds 51 SMBHs 51 constellation Carina 51 galaxies collide 51 tiny airborne particles 51 galaxy clusters 51 Arches Cluster 51 synchronous orbit 51 supercell storms 51 hydrosphere 51 binary asteroids 51 cirrus cloud 51 Galilean satellites 51 Earthly contamination 51 electromagnetic 51 electromagnetic radiations 51 gaseous planet 51 interstellar cloud 51 GJ #b [001] 51 Bosons 51 gamma ray telescope 51 atoms 51 laser pulses 51 supergiant star 51 gravitationally 51 gamma ray emitting 51 lithium atoms 51 lobate scarps 51 gravitational interaction 51 Anthony Remijan 51 Quadrantid meteor shower 51 cosmic ray protons 51 Upsilon Andromedae 51 blocks harmful ultraviolet 51 corona discharge 51 sooty particles 51 protons 51 interstellar distances 51 slender crescent 51 Saturnian moon 51 heliospheric 51 planetary nebulas 51 redshifts 51 prevailing westerly winds 51 moons orbiting Saturn 51 oxidized mercury 51 pyroxene 51 matter antimatter annihilation 51 gravitational perturbations 51 constellation Virgo 51 silicate mantle 51 binds particles 51 subsurface ocean 51 lunar equator 51 quantum oscillations 51 Volatile organic compounds 50 galactic clusters 50 dynamical processes 50 Cosmologists 50 molten rocks 50 Ring Nebula 50 ultracold temperatures 50 steering currents 50 nucleosynthesis 50 proton particles 50 cosmological theories 50 Volcanic eruptions 50 Astrological lore 50 electromagnetic pulses 50 -# Celsius [001] 50 detect gravitational waves 50 magnetar 50 Fornax cluster 50 Saturn moon Iapetus 50 giant elliptical galaxies 50 electron flux 50 geomagnetic activity 50 ultraviolet UV rays 50 supermassive black hole 50 exoplanets planets outside 50 planet transits 50 planet Gliese #g 50 Distant galaxies 50 nuclei 50 proto galaxies 50 atmospheric neutrinos 50 superheavy element 50 habitable zones 50 isotherms 50 alien civilizations 50 elongated orbit 50 quasar 50 sulphate particles 50 phyllosilicate 50 CMEs 50 spinning neutron 50 starburst galaxy 50 exo planet 50 interferometers 50 absorbs photons 50 leptons 50 cyclonic circulations 50 IRAS #-# 50 stratospheric clouds 50 Martian craters 50 Infrasound 50 Microlensing 50 interstellar magnetic 50 nucleon 50 dynamical evolution 50 elliptical galaxy 50 polar stratospheric 50 Tectonic plates 50 elliptical galaxies 50 muon 50 HL Tau 50 dwarf galaxies 50 celestial objects 50 antiparticle 50 Milky Way Galaxy 50 Pluto Charon 50 tidally locked 50 phonons 50 evanescent waves 50 circularly polarized light 50 Type Ic supernovae 50 comet tail 50 convective 50 gravitational acceleration 50 lunar crust 50 Kuiper Belt Object 50 electron neutrino 50 macroscopic objects 50 microscopic bubbles 50 extraterrestrial UFOs 50 planets circling 50 Rydberg atoms 50 Jovian planets 50 hexagonal mirrors 50 BP Psc 50 gravitational redshift 50 Swift Tuttle 50 Fermi Telescope 50 Corot 7b 50 nebulas 50 bosonic 50 PSR B# 50 crystal lattices 50 submillimeter wavelengths 50 GRB #A 50 oscillations 50 infrared wavelengths 50 gravity warps 50 submillimetre wavelengths 50 Saturn outermost ring 50 fission reactions 50 distant galaxy clusters 50 galaxy cluster 50 magnetic dynamo 50 Lightning flickered 50 osmium 50 Elliptical galaxies 50 auroral activity 50 stellar seismology 50 eclipsing binary 50 permanently shadowed regions 50 astrophysical objects 50 infrasound 50 Oort cloud 50 electro magnetic radiation 50 Fomalhaut b 50 inhomogeneities 50 water vapor 50 circularly polarized 50 wavelengths 50 ionizes 50 radial velocity 50 sterile neutrino 50 Comet Hartley 2 50 haloes 50 solar minima 50 infalling matter 50 Pleiades star 50 satellites orbiting 50 Earths orbiting 50 Higgs particle 50 rocky planets 50 Michelson interferometer 50 galactic magnetic 50 quantum particles 50 Flu epidemics 50 ULIRGs 50 globular star 50 antineutrino 50 Bug Nebula 50 Contrails 50 satellites orbiting Earth 50 advection 50 cosmic strings 50 Supernova #A 50 colliding galaxies 50 undiscovered particle 50 ultrashort pulses 50 magnetite crystals 50 Toutatis 50 radiative 50 occulted 50 spatially coherent 50 Spitzer infrared 50 interstellar grains 50 keV 50 Leonid meteors 50 longwave radiation 50 dipole magnets 50 supercooled liquid 50 constellation Leo 50 comet 50 magma boiling 50 Ionizing radiation 50 shadowy craters 50 proton antiproton 50 polarized electrons 50 P/# A2 50 Svedhem 50 hadron 50 CoRoT satellite 50 collimated 50 neutralino 50 spiral galaxy NGC 50 Geminid shower 50 Quadrantid 50 Particle accelerators 50 Harmful algal blooms 50 Dust mites 49 SN #gy 49 distant quasar 49 Jonathan Lunine 49 astrophysical 49 gravitational wave 49 Cosmic Radiation 49 fermions 49 ESA Integral 49 alkali atoms 49 bandgaps 49 lunar meteorites 49 CoRoT #b 49 Mars landers 49 IBEX spacecraft 49 geostationary orbits 49 Type Ia 49 Adam Riess 49 yttrium barium copper 49 Henize #-# 49 Voyager spacecraft 49 galactic mergers 49 particle beam 49 millisecond pulsar 49 Subduction zones 49 rotational velocity 49 single celled algae 49 x ray beams 49 Saturn outermost 49 colloidal crystals 49 Gas hydrates 49 radiative cooling 49 laser beams 49 invisible odorless tasteless 49 hydrated minerals 49 femtosecond pulses 49 spectroscopic measurements 49 condensation nuclei 49 Comet Halley 49 Tropical cyclones 49 radiometers 49 unicellular organisms 49 Coma Cluster 49 thermometers barometers dental amalgams 49 dust devils 49 coronal hole 49 specular reflection 49 Galileo spacecraft 49 luminosities 49 earths 49 Jupiter moon Io 49 TrES 4 49 radial velocity technique 49 constellation Taurus 49 pulsar 49 vibrating strings 49 superluminal 49 dust motes 49 soundwaves 49 MeV 49 obscuration 49 exhaust plume 49 plasma spectrometer