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(Click for frequent words.) 72 cosmic rays 68 neutrino 67 galactic cosmic rays 65 gamma rays 64 magnetic reconnection 64 cosmic ray particles 64 gamma ray emission 63 X ray emission 63 gravitational wave 62 muon 62 solar flares 62 magnetar 62 ionosphere 62 RHESSI 62 gravitational waves 61 magnetic fields 61 quasar 61 auroral 61 gamma ray burst 61 meteoroids 61 meteoroid 61 magnetospheric 60 photon 60 TGFs 60 proton proton collisions 60 substorms 60 Earth magnetosphere 60 photons 60 gravitational radiation 60 solar corona 60 supersymmetric particles 60 Higgs bosons 60 neutrinos 60 substorm 59 cosmic radiation 59 magnetosphere 59 supernova explosion 59 geomagnetic storms 59 APXS 59 Ulysses spacecraft 59 electron neutrinos 59 muons 59 galactic cosmic ray 59 Gamma rays 59 exoplanetary 59 type Ia supernova 59 Cosmic rays 59 particle acceleration 59 astronomers 59 gravitational lensing 58 ionospheric 58 HD#b 58 astrophysical 58 energetic electrons 58 metallicity 58 GRB #B 58 blazar 58 Cosmic Microwave Background 58 coronal mass ejections 58 gamma ray flares 58 helium nuclei 58 GRBs 58 positrons 58 Fermi telescope 58 geomagnetic storm 58 interplanetary spacecraft 58 neutrons 58 X ray pulses 58 supernovae 57 hydrogen nuclei 57 redshift 57 cosmic ray flux 57 comet 57 Quadrantid 57 active galactic nuclei 57 sodium atoms 57 solar neutrinos 57 gravitational lens 57 phonon 57 radial velocity 57 coronal mass ejections CMEs 57 Type Ia supernova 57 Earth ionosphere 57 cosmological distances 57 impactors 57 quasars 57 GRB # 57 WASP #b 57 AGNs 57 quantum particle 57 Rayleigh scattering 57 Cosmic ray 57 planet magnetosphere 57 GRB# 57 ejecta 56 extragalactic 56 neutron star 56 X ray telescopes 56 coronal mass ejection 56 X ray wavelengths 56 gamma rays emitted 56 neutron spectrometer 56 Cosmic Microwave Background CMB 56 backscattered 56 GeV 56 lunar perigee 56 moonquakes 56 gamma ray bursts 56 infalling 56 microlensing 56 supernova 56 cosmic gamma rays 56 Oort Cloud 56 Cancri e 56 optical wavelengths 56 retrograde orbit 56 antimatter particles 56 galactic disk 56 NASA Wilkinson Microwave 56 Kuiper belt object 56 mantle plumes 56 colliding protons 56 gamma ray 56 attosecond 56 Carina constellation 56 sunspot cycle 56 eclipsing binary 56 Upsilon Andromedae 56 ultraviolet wavelengths 56 subatomic particle 56 CMEs 56 highly elliptical orbits 56 UV photons 56 Kuiper Belt Object 56 pulsar 56 sunspot activity 56 CMB radiation 56 geomagnetic activity 56 Saturn magnetosphere 56 positron 56 gamma ray observatory 56 cometary 56 Epsilon Aurigae 56 Higgs particle 56 comets asteroids 56 Planck satellite 56 gamma ray astronomy 56 boson 56 Fomalhaut b 56 electron beams 56 heliospheric 55 COROT 55 diffract 55 sterile neutrinos 55 extrasolar 55 asteroid 55 Eta Carinae 55 cosmic microwave background 55 sterile neutrino 55 solar nebula 55 RS Ophiuchi 55 YORP effect 55 ultraviolet radiation emitted 55 X ray photons 55 interstellar medium 55 antiproton 55 excitations 55 brown dwarfs 55 SN #gy 55 Type Ia 55 proton collisions 55 XMM Newton 55 gaseous planet 55 muon neutrinos 55 photoemission 55 millisecond pulsar 55 stellar occultations 55 particle colliders 55 polar vortex 55 energetic cosmic rays 55 Fermi LAT 55 axions 55 proton proton 55 outer planets 55 astrophysicists 55 afterglows 55 microquasar 55 Raman scattering 55 visible wavelengths 55 Kuiper belt objects 55 alpha particles 55 WMAP satellite 55 photoionization 55 sunspot 55 protons 55 Alfvén waves 55 NEAs 55 planetary Transits 55 photochemical reactions 55 Corot 9b 55 comet nucleus 55 HD #b [002] 55 tropospheric 55 coronal heating 55 WIMPs 55 ionized particles 55 X ray observatory 55 W boson 55 quark gluon plasma 55 micrometeoroids 55 Nasa spacecraft 54 quantum tunneling 54 Anisotropy Probe 54 SN #A 54 Corot 7b 54 blazars 54 CALIPSO 54 interstellar dust 54 supernova explosions 54 protoplanet 54 surface plasmons 54 excitons 54 antiprotons 54 gravitational microlensing 54 antiparticle 54 baryon 54 planetary astronomer 54 solitons 54 distant galaxies 54 alpha particle 54 particle detectors 54 Composite Infrared Spectrometer 54 particle collisions 54 meteor 54 Solar flares 54 pulsars 54 electron neutrino 54 RXTE 54 cosmologists 54 X ray spectrometer 54 millisecond pulsars 54 Orionids 54 Geminga 54 laser pulse 54 Evolution Explorer 54 aurora 54 martian atmosphere 54 noctilucent clouds 54 Hawking radiation 54 gravitational redshift 54 Comet Halley 54 particle beam 54 Quadrantids 54 quantum entanglement 54 polarimetry 54 interferometers 54 Orionid 54 terahertz radiation 54 Gamma ray bursts 54 magnetic flux 54 auroras 54 airglow 54 protons collide 54 IceCube 54 planets orbits 54 icy comets 54 antineutrinos 54 comets 54 VHE gamma rays 54 impactor 54 Type Ia supernovas 54 graviton 54 spacetime 54 Mössbauer 54 THz radiation 54 Hanny Voorwerp 54 orbiting gamma ray 54 gluon 54 interferometer 54 plasmon 54 Kuiper Belt Objects 54 dipole moment 54 exosphere 54 neutron radiation 54 cometary debris 54 jovian 54 laser pulses 54 relativistic particles 54 cosmic particles 54 exciton 54 transiting planets 54 ionised 54 cosmic microwave radiation 54 SUSY 54 GZK cutoff 54 cosmic ray protons 54 X ray binaries 54 spherically symmetric 54 coronal loops 54 Super Kamiokande 54 gamma ray photons 53 magnetic excitations 53 Jupiter magnetosphere 53 starquakes 53 magnetars 53 aurorae 53 ion collisions 53 auroral activity 53 infrared radiation 53 radial velocity method 53 particle beams 53 distant galaxy 53 cosmic phenomena 53 distant supernovae 53 reionization 53 Comet Hartley 2 53 nucleosynthesis 53 Late Heavy Bombardment 53 interferometry 53 Crab Pulsar 53 Jenniskens 53 electron scattering 53 accretion disks 53 superluminal 53 geomagnetic 53 electron density 53 distant quasars 53 cometary material 53 supermassive black hole 53 SIRTF 53 ESA Integral 53 protoplanetary disk 53 planemos 53 comet Tempel Tuttle 53 mesosphere 53 B mesons 53 electron 53 antihelium 4 53 Gliese #c 53 spectroscopic 53 electron positron 53 periodic dimming 53 magnetic dipole 53 Bose Einstein condensates 53 Yarkovsky effect 53 Cherenkov radiation 53 galaxy clusters 53 extrasolar planet 53 kaons 53 exoplanet 53 astrophysical phenomena 53 coronal holes 53 Astrophysical 53 extraterrestrial civilizations 53 radiative 53 Saturn aurora 53 electron spin 53 galaxies 53 cosmic ray intensity 53 galaxy cluster 53 Kuiper Belt object 53 GJ #b [002] 53 gravitational 53 Hawking Radiation 53 photometer 53 type Ia supernovae 53 elliptical galaxies 53 auroral emissions 53 Saturn rings 53 magnetic monopole 53 binary asteroid 53 shorter wavelengths 53 gravitational lenses 53 Cassini 53 detect gravitational waves 53 starburst galaxies 53 Crab Nebula 53 magnetic substorms 53 occultation 53 atoms 53 MARSIS 53 Keck telescope 53 KBOs 53 terahertz waves 53 wavefunction 53 Epsilon Eridani 53 magnetotail 53 Alfven waves 53 SOHO spacecraft 53 J# +# [002] 53 MiniBooNE 53 infall 53 deuterium 53 Voyager spacecraft 53 gravitational slingshot 53 GJ #b [001] 53 keV 53 LIGO 53 exoplanet orbiting 53 solar irradiance 53 photons emitted 53 spectroscopic measurements 53 distant quasar 53 particle astrophysics 53 Gamma ray 53 axial tilt 53 Martian dust 53 neutralinos 53 filamentary structure 53 redshifts 53 silicon monoxide 53 Cassini ion 53 particle detector 53 electromagnetic 53 gravitons 53 geomagnetic substorms 53 interstellar clouds 53 ultracold atoms 52 stellar occultation 52 GALEX 52 galactic alignment 52 electromagnetic flux 52 detect gamma rays 52 MINOS 52 supernova remnant 52 optical telescopes 52 atmospheric disturbances 52 Hipparcos 52 dwarf galaxy 52 weak gravitational lensing 52 Muons 52 Supernova #A 52 globular clusters 52 KamLAND 52 icy moons 52 atmospheric aerosols 52 synchrotron emission 52 IBEX spacecraft 52 Geminid 52 V# Mon 52 galaxy redshift 52 Galileo spacecraft 52 globular cluster 52 auroral displays 52 bosonic 52 ROSAT 52 Bullet Cluster 52 helium atoms 52 spectroscopic analysis 52 infrared astronomy 52 Very Large Array 52 bolide 52 microwave radiation 52 ionized gas 52 BaBar experiment 52 quasiparticle 52 gamma ray energies 52 galaxy formation 52 galaxies collide 52 sulfate aerosol 52 fermion 52 Lyman alpha 52 Enceladus 52 dynamical 52 Saturnian 52 Halley comet 52 cosmic strings 52 supernovas 52 hypervelocity 52 Voorwerp 52 Gravitational waves 52 supersolid 52 particle physics experiments 52 radial velocity technique 52 WMAP 52 meteor impacts 52 planetesimals 52 accretion disk 52 X ray observatories 52 particle accelerators 52 magnetic monopoles 52 asteroidal 52 protostar 52 Supernovae 52 occultations 52 gamma ray flashes 52 radiotelescope 52 Keck Interferometer 52 ionization 52 wavelengths 52 magma ocean 52 electrons 52 sulfur isotope 52 lightwaves 52 subatomic particles 52 planet Uranus 52 photosphere 52 telescope 52 sunspots 52 neutrino oscillation 52 Doppler shifts 52 neutrino particles 52 neutralino 52 decoherence 52 Mars Odyssey spacecraft 52 geoneutrinos 52 transiting planet 52 lensing galaxy 52 SN #E 52 ray Space Telescope 52 water vapor 52 cryovolcanism 52 STEREO spacecraft 52 Lyrids 52 proton decay 52 maser emission 52 active galactic nucleus 52 circumstellar disks 52 astronomical observations 52 VLTI 52 micro meteorites 52 elliptical galaxy 52 WHIM 52 Magellanic Stream 52 neutron 52 extrasolar planetary systems 52 moon gravitational pull 52 surface plasmon 52 TrES 4 52 Type Ia supernovae 52 coronagraph 52 phonons 52 THEMIS satellites 52 sparticles 52 blackbody 52 Oort cloud 51 constellation Aquarius 51 Laser Interferometer Gravitational Wave 51 volcanic plumes 51 RRATs 51 luminous galaxies 51 Planck telescope 51 coronal loop 51 high redshift galaxies 51 spacecraft 51 spacecraft flyby 51 exoplanets orbiting 51 planetary nebulae 51 muon neutrino 51 planetary orbits 51 volcanism 51 gamma ray bursts GRBs 51 infrared ultraviolet 51 heliosphere 51 gravitational interactions 51 plasmons 51 Galactic cosmic rays 51 anomalous cosmic rays 51 Wolf Rayet star 51 Pluto Charon 51 hydrogen atoms 51 Earth magnetotail 51 faint galaxies 51 axion 51 gamma ray detectors 51 Arches Cluster 51 antimatter particle 51 planet orbiting 51 numerical simulations 51 particle accelerator 51 entangled quantum 51 orbiting Chandra 51 Comet Hartley 51 Heliospheric Observatory SOHO 51 GJ#b 51 Doppler shift 51 ATLAS detector 51 BP Psc 51 photoelectron 51 atomic nuclei 51 CoRoT 9b 51 orbiting spacecraft 51 ESA XMM Newton 51 NASA Far Ultraviolet 51 diffraction pattern 51 galaxy M# [002] 51 dwarf galaxies 51 protoplanetary disks 51 Comet 9P/Tempel 1 51 Quadrantid meteor shower 51 Jupiter moon Io 51 circumstellar 51 radiometers 51 gravitational interaction 51 magnetic polarity 51 permanently shadowed craters 51 cometary dust 51 DZero 51 microwave photons 51 Microlensing 51 intrinsic brightness 51 masers 51 electron ion 51 electron volts 51 comet tail 51 quantum mechanical 51 nucleon 51 anisotropy 51 P/# A2 51 situ measurements 51 ESO VLT 51 Eta Aquarids 51 antineutrino 51 Diviner 51 polaritons 51 electromagnetic radiation 51 chondrites 51 NASA Cassini spacecraft 51 Earthlike planets 51 photoluminescence 51 Magnetospheric 51 Comet Tempel Tuttle 51 meteoroid impacts 51 moon Io 51 electron volt 51 Wilkinson Microwave Anisotropy Probe 51 millimeter wavelengths 51 Deep Impact comet 51 Milankovitch cycles 51 strange quarks 51 millimeter wavelength 51 Photons 51 troposphere 51 Higgs singlet 51 comets orbiting 51 Cygnus X 51 soliton 51 fermionic 51 electron positron pairs 51 high temperature superconductivity 51 pions 51 lunar meteorites 51 NASA Voyager spacecraft 51 Murchison meteorite 51 photon energies 51 CoRoT satellite 51 SN #D 51 LCROSS 51 Galaxy Evolution 51 radioactive decay 51 SN#A 51 antihydrogen 51 intracluster 51 Auger recombination 51 astronomical objects 51 circumstellar disk 51 X ray binary 51 infrared photons 51 moon Enceladus 51 Rydberg atom 51 stellar seismology 51 proton antiproton collisions 51 neutron stars 51 supernova remnants 51 smallest exoplanet 51 W bosons 51 nebular 51 asteroids 51 sun corona 51 EPOCh 51 MARSIS radar 51 supergiant star 51 oscillations 51 earthshine 51 photometry 51 ringed planet 51 moonlets 51 rubidium vapor 51 lunar regolith 50 radar interferometry 50 astrometry 50 globulars 50 nuclei 50 coronal hole 50 electrons protons 50 lunar equator 50 planets 50 Itokawa 50 Saturn auroras 50 Toutatis 50 proplyds 50 Hubble observations 50 RS Oph 50 diffraction 50 meteorite impacts 50 Earth radii 50 Rossby waves 50 neutral mass spectrometer 50 Comet Lulin 50 orbiting observatories 50 HiRISE image 50 CERN LHC 50 elongated orbits 50 orbital velocity 50 tau neutrinos 50 submillimeter 50 MG J# +# 50 hadron 50 Astrophysicists 50 gravitational tides 50 Solar System 50 supernovae explosions 50 Maunder minimum 50 Aurigid 50 meridional flow 50 SNR #-#.# 50 oppositely directed 50 Beta Pictoris b 50 elongated orbit 50 Hubble Space Telescope HST 50 hadrons 50 LSND 50 GRB #A 50 cosmological parameters 50 electromagnetic signals 50 quantum superposition 50 particles WIMPs 50 antimatter 50 celestial objects 50 ARPES 50 cosmic ray collisions 50 VLBA 50 aerosol particles 50 Earth orbiting satellites 50 photon fluorescence 50 SNe Ia 50 cosmic 50 cosmological constant 50 strange quark 50 seismic waves 50 nucleons 50 convective 50 HD# [002] 50 Neutrinos 50 electrons positrons 50 Kepler #b 50 NASA THEMIS 50 orbiting 50 synchrotron x ray 50 diffuse aurora 50 celestial object 50 Planck 50 HM Cancri 50 Hot Jupiters 50 ionize 50 exo planet 50 magnetization 50 olivine mineral 50 crustal thickness 50 planet gravitational tug 50 AB Aurigae 50 UVOT 50 geomagnetism 50 quantum mechanically 50 fainter objects 50 Alex Filippenko 50 energetic gamma rays 50 Mott insulator 50 Apophis asteroid 50 electric dipole 50 RHIC 50 supersymmetry 50 picosecond 50 inhomogeneous 50 telescopes 50 lunar crater 50 Gaensler 50 astronomer 50 electron flux 50 electron electron 50 matter antimatter asymmetry 50 Venusian atmosphere 50 meteoritic material 50 proton 50 orbiting observatory 50 Cepheids 50 red supergiant 50 HUDF 50 infrared wavelengths 50 weakly interacting 50 heliosheath 50 Nibiru 50 luminosities 50 Lunar Prospector 50 attosecond pulses 50 atmospheric 50 Gamma Ray 50 gamma ray radiation 50 comet orbit 50 atmospheric phenomena 50 galaxy M# [001] 50 novae 50 quantum gravity 50 Upsilon Andromedae b 50 neutrino detector 50 meteorite 50 Huygens spacecraft 50 neutrino detectors 50 electron pairing 50 extrasolar planets 50 x ray pulses 50 Samuel Oschin Telescope 50 MeV 50 OGLE TR 50 exo planets 50 satellites orbiting Earth 50 spin Seebeck 50 ionise 50 brown dwarf 50 protoplanets 50 astrometric 50 DZero experiment 50 Arecibo Observatory 50 THEMIS 50 Nernst 50 asteroids comets 50 Churyumov Gerasimenko 50 olivine 50 foreground galaxy 50 observable universe 50 supermassive black holes 50 atmospheric turbulence 50 supercomputer simulations 50 sonoluminescence 50 meteorite bombardment 50 CAIs 50 photon counting 50 planet HD #b 50 helium atom 50 pseudogap 50 helium ions 50 Titan flyby 50 electron orbits 50 Haumea 50 electromagnetic waves 50 physicists 50 polarimetric 50 supergiant stars 50 insolation 50 Jay Melosh 49 galactic cores 49 Andromeda Galaxy 49 cosmic cannibal 49 backscattering 49 CDMS experiment 49 NASA Kepler telescope 49 Iapetus 49 ultrashort laser pulses 49 Spectrograph 49 Einstein theory 49 antimatter atoms 49 Krimigis 49 Cerenkov radiation 49 interferometric 49 colliding galaxies 49 Substorms 49 HiRISE camera aboard 49 Cassini flyby 49 Mars Reconnaissance Orbiter MRO 49 X ray emitting 49 distant galaxy clusters 49 spherules 49 perihelion 49 superheavy elements 49 GCRs 49 optical interferometry 49 fermions 49 atomic particles 49 photochemistry 49 Cosmologists 49 NanoSail D 49 albedo reflectivity 49 general relativity 49 mesospheric 49 spectroscopy 49 deep convective clouds 49 microlensing events 49 Fermi Gamma ray 49 deuterium atoms 49 Optical Gravitational Lensing Experiment 49 transiting exoplanet 49 Saturnian moon 49 Ray Spectrometer 49 Milky Way Galaxy 49 collisional 49 Gliese #g 49 NASA Chandra 49 Saturn moon Enceladus 49 SPIRE instrument 49 Martian rovers 49 XMM Newton observations 49 Cassini Huygens 49 Orbiting Carbon Observatory 49 VISTA telescope 49 electron spins 49 orbital angular momentum 49 planetoid 49 colliders 49 tau neutrino 49 Bose Einstein condensate 49 inhomogeneities 49 perigee 49 Anisotropy Probe WMAP 49 galaxy 49 WISE spacecraft 49 Gliese #d 49 Uranus 49 Adaptive optics 49 blue supergiant 49 Martian meteorites 49 Einstein theories 49 interstellar dust grains 49 spectroscopically 49 spectrographs 49 infrared telescopes 49 hypernova 49 ultracold 49 planetary 49 frequency electromagnetic waves 49 Delta Cephei 49 baryonic 49 VY Canis Majoris 49 GLAST 49 periodicities 49 NASA Cassini 49 Z boson 49 terawatt 49 RPWS 49 exhaust plume 49 hydrogen atom 49 GEO# 49 Sunspots 49 moonlet 49 XTE J# 49 particle 49 corona discharge 49 emit X rays 49 submillimeter wavelengths 49 neutron beam 49 Antenna LISA 49 tholins 49 GROND 49 emits X rays 49 planetary transits 49 transiting exoplanets 49 gamma ray telescope 49 Melosh 49 infrared spectrometers 49 STEREO 49 GRB 49 dispersive 49 sulfate aerosols 49 telescopic observations 49 Mini TES 49 evanescent waves 49 HARPS spectrograph attached 49 Keck Telescope 49 interstellar particles 49 HAT P 49 faraway galaxies 49 isotopic ratios 49 twin STEREO spacecraft 49 R Coronae Borealis 49 Mars landers 49 Werthimer 49 XMM Newton satellite 49 relativistic 49 HIP #b 49 VB #b 49 planetoids 49 Halzen 49 infrared spectrograph 49 electrical resistivity 49 ionospheric disturbances 49 neutrino experiment 49 supervolcanoes 49 merging galaxies 49 Collider Detector 49 constellation Centaurus 49 retroreflector 49 Neutrons 49 inelastic scattering 49 Gamma ray burst 49 Planetary Transits 49 infrared spectral 49 antiparticles 49 phyllosilicates 49 neutrino beam 49 thruster