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(Click for frequent words.) 67 X rays gamma rays 67 Cosmic rays 64 ionized gases 63 protoplanetary 63 distant supernovas 63 galactic cosmic rays 62 coronal mass ejections CMEs 62 interstellar cloud 62 Gamma rays 62 emit X rays 62 energetic electrons 62 Geminga 62 planet magnetosphere 61 comet Tempel Tuttle 61 radioisotope thermoelectric generators 61 inhabitable planets 61 planets comets 61 VHE gamma rays 61 X ray telescopes 61 Gravitational waves 61 Vourlidas 61 electrons protons 60 cosmic ray particles 60 constellation Eridanus 60 coronal loops 60 Kuiper Belt Objects 60 Fermi telescope 60 Neutron stars 60 accretion disks 60 highly elliptical orbits 60 coronal holes 60 interstellar clouds 60 interstellar dust clouds 60 plasmasphere 60 icy comets 60 Solar TErrestrial RElations Observatory 60 sunlike stars 60 Upsilon Andromedae 60 comets orbiting 60 Gamma ray bursts 60 infrared spectrometers 60 airglow 60 retrograde orbits 60 ionise 60 particle acceleration 60 gamma ray emission 59 rotating neutron stars 59 Saturn Enceladus 59 ionized particles 59 planetary atmospheres 59 circumstellar 59 Samuel Oschin Telescope 59 Perseus Cluster 59 particle physics experiments 59 magnetic dynamo 59 infall 59 magnetospheres 59 planetary Transits 59 cosmic cannibal 59 UV photons 59 infalling 59 MG J# +# 59 exoplanets planets 59 asteroids comets 59 filamentary structure 59 gravitational radiation 59 interstellar particles 59 solar corona 59 comets asteroids 59 Climate Experiment SORCE 59 diffuse aurora 59 auroral displays 59 moon Io 58 IBEX spacecraft 58 atmospheric neutrinos 58 active galactic nucleus 58 gamma rays emitted 58 moonquakes 58 magnetospheric 58 Hubble orbits 58 astrophysical phenomena 58 occultations 58 astrophysical objects 58 gamma ray observatory 58 Upsilon Andromedae b 58 neutrino particles 58 Bok globules 58 proplyds 58 gravitational tides 58 moons orbiting 58 Solar flares 58 sunlike star 58 inner Oort Cloud 58 electrons positrons 58 extrasolar 58 X ray spectrometer 58 nebular 58 Cosmic Microwave Background 58 Earth orbiting satellites 58 Comet Tempel Tuttle 58 ESA Integral 58 radioactive nuclei 58 interplanetary spacecraft 58 hydrogen nuclei 57 Anthony Remijan 57 supergiant star 57 galactic disk 57 planets orbiting stars 57 Martian rovers 57 Saturn magnetosphere 57 Epsilon Eridani 57 planets orbits 57 spinning neutron stars 57 Evolution Explorer 57 relativistic particles 57 infrared telescopes 57 Carina constellation 57 Manned missions 57 X ray pulses 57 exoplanets planets outside 57 silicon monoxide 57 meteorological oceanographic 57 Tempel Tuttle 57 GJ #b [002] 57 extragalactic 57 infalling gas 57 Jupiter Ganymede 57 Astrological lore 57 Alfven waves 57 unmanned probes 57 millimeter wavelengths 57 Kuiper belt objects 57 Nasa spacecraft 57 supernova explosions 57 galaxy M# [001] 57 Muons 57 Neptune Uranus 57 zodiacal dust 57 hypernova 56 starquakes 56 ionised gas 56 active galactic nuclei 56 icy moons 56 infrared ultraviolet 56 synchrotron x ray 56 stellar occultations 56 THEMIS satellites 56 Martian dust 56 Stephan Quintet 56 elongated orbits 56 ESA XMM Newton 56 ecliptic plane 56 sized planets orbiting 56 gravitational perturbations 56 GALEX 56 Kepler 9c 56 heliospheric 56 X ray wavelengths 56 Coronal Mass Ejections 56 Wolf Rayet stars 56 exosphere 56 O OREOS 56 gamma ray telescope 56 stellar nurseries 56 blackholes 56 constellation Carina 56 exo planets 56 Orientale Basin 56 oppositely directed 56 tidal bulge 56 gaseous planets 56 Wolszczan 56 silicate mantle 56 gravitational keyhole 56 Jupiter moon Io 56 helium atoms 56 detect gamma rays 56 supergiant stars 56 cosmological distances 56 planetary orbits 56 gamma ray flashes 56 synchronous orbit 56 lightwaves 56 outer corona 56 Distant galaxies 56 globulars 56 circumstellar disks 56 Dynamics Observatory 56 galactic cosmic ray 56 spectroscopic measurements 56 Heliospheric Observatory SOHO 56 Fermi Telescope 56 twin Voyager spacecraft 56 dimming starlight 56 planet HD #b 56 extrasolar planets orbiting 56 meteoroid impacts 56 permanently shadowed craters 56 millisecond pulsar 56 photochemical reactions 56 Greenhouse gases trap 56 interstellar dust samples 56 cosmic gamma rays 56 YORP effect 56 outer planets 55 protoplanets 55 ray Space Telescope 55 satellites orbiting Earth 55 WISE spacecraft 55 Alycia Weinberger 55 IRC +# 55 Mars landers 55 ion thrusters 55 CMB photons 55 gamma ray flares 55 merging galaxies 55 interstellar dust grains 55 constellation Hercules 55 distant supernovae 55 cosmic radiation 55 fainter objects 55 elliptical galaxy NGC 55 Proxima Centauri 55 helium nuclei 55 VY Canis Majoris 55 X ray emission 55 NASA Lunar Prospector 55 X ray binaries 55 emits alpha 55 mineralogical composition 55 periodic dimming 55 Coma Cluster 55 Type Ia supernovas 55 whiz harmlessly 55 Ulysses spacecraft 55 V# Sgr 55 gamma ray radiation 55 comets meteors 55 submillimetre wavelengths 55 HESS telescopes 55 ionizes 55 solar nebula 55 TGFs 55 Corot 9b 55 backscattered 55 Cancri e 55 protoplanetary disk 55 subsurface ocean 55 particle colliders 55 SMBHs 55 Bug Nebula 55 Cygnus Lyra region 55 ARRL AMSAT 55 Magnetars 55 exoplanetary 55 magnetars 55 lunar equator 55 Suzaku X ray 55 CoRoT 9b 55 Earth magnetotail 55 volcanic moon Io 55 Earth ionosphere 55 silicate dust 55 asteroid collisions 55 spacecraft orbited 55 Type Ic supernova 55 Magnetospheric 55 Virgo Cluster 55 galaxy M# [002] 55 jovian 55 Helioseismic 55 blue supergiant 55 xenon ions 55 gravitational waves 55 binary asteroids 55 ENAs 55 distant quasars 55 Milky Way halo 55 proto galaxies 55 protostar 55 dynamical evolution 55 supernova remnants 55 superclusters 55 interstellar dust particles 55 optical wavelengths 55 X ray observatories 55 starburst galaxy 55 olivine mineral 55 X ray observatory 55 afterglows 54 cosmic rays collide 54 IKAROS 54 neutralinos 54 red supergiants 54 Earthlike planet 54 hexagonal mirrors 54 absorbs photons 54 thermonuclear reactions 54 spectral measurements 54 accretion disk 54 comets moons 54 magnetosphere 54 radioisotope thermoelectric generator 54 Iodine counteracts 54 cosmic ray intensity 54 sunspot cluster 54 cosmic particles 54 protons collide 54 moons circling 54 spectral fingerprints 54 protons electrons 54 graphite whiskers 54 Ian McShane Pillars 54 Galilean moons 54 neutrino detectors 54 extraterrestrial UFOs 54 hunting Kepler telescope 54 Thermal Emission Spectrometer 54 planets asteroids 54 sodium atoms 54 electromagnetic flux 54 planetary magnetospheres 54 cosmic rays 54 Churyumov Gerasimenko 54 Planck satellite 54 Particle accelerators 54 orbiting gamma ray 54 Jovian moon 54 electron bunches 54 carbonaceous chondrites 54 Mars Pathfinder lander 54 neutron beams 54 fading afterglow 54 planets orbiting sun 54 protoplanet 54 Io Europa 54 asteroidal 54 ionized gas 54 retrograde orbit 54 radiative cooling 54 Sagittarius dwarf galaxy 54 spherical halo 54 Oort Cloud 54 eccentric orbits 54 Solar Orbiter 54 Venusian atmosphere 54 photochemistry 54 prominences 54 auroral emissions 54 HM Cancri 54 Galileo spacecraft 54 gamma ray astronomy 54 exoplanet orbiting 54 Voyager probes 54 hydrosphere 54 submillimeter 54 volcanic plumes 54 solar radii 54 Beta Pictoris b 54 Submillimeter Array 54 relativistic jets 54 photosphere 54 blazars 54 extrasolar planetary systems 54 Jovian moons 54 metallic nanostructures 54 Earth radii 54 Cometary 54 geosynchronous Earth 54 Saturn moons Enceladus 54 moons Phobos 54 Saturn Cassini 54 Rosette Nebula 54 millimeter wavelength 54 AGNs 54 Jupiter magnetosphere 54 circumstellar disk 54 helium ions 54 particle detectors 54 Mercury exosphere 54 neutron detector 54 van Arkel discovery 54 Supernova #A 54 proto cluster 54 terahertz rays 54 #P/Churyumov-Gerasimenko 54 redshifted 54 Cassini flybys 54 moon Enceladus 54 concentrating photovoltaics CPV 54 geothermal hydro 54 impactor spacecraft 54 novas 54 spinning neutron 54 inertial confinement fusion 54 HD#b 54 Crab Pulsar 54 RHESSI 54 Bonnie Buratti 54 Gamma ray burst 54 radiometers 53 innermost planet 53 outermost planets 53 planetary embryos 53 astrobiological 53 elongated orbit 53 planets circling stars 53 ionize 53 Neutrons 53 cosmic phenomena 53 orbiting observatories 53 nucleosynthesis 53 Earth magnetosphere 53 Higgs bosons 53 ionisation 53 emits X rays 53 Tharsis Rise 53 neutron spectrometer 53 ROSAT 53 cosmic ray collisions 53 magnetic substorms 53 ultraviolet photons 53 polarimetry 53 PUVA psoralen plus 53 micro meteorites 53 quantum cascade lasers 53 gamma rays X rays 53 meteoritic material 53 meteoroids 53 Cosmic ray 53 albedo reflectivity 53 Mercury magnetosphere 53 proton antiproton 53 origins spectrograph 53 reentry capsule 53 particle astrophysics 53 stony meteorites 53 discover Fomalhaut 53 intrinsic brightness 53 RRATs 53 lensing galaxy 53 Saturn moon Mimas 53 Particle acceleration 53 orbited Jupiter 53 millisecond pulsars 53 protoplanetary disks 53 planetesimals 53 plasma spectrometer 53 earthlike planets 53 supernova explosion 53 hematite mineral 53 constellation Centaurus 53 Epsilon Aurigae 53 Franck Marchis 53 X ray afterglow 53 interstellar medium 53 proto planetary disk 53 infrared astronomy 53 planets constellations 53 largest moon Charon 53 comet McNaught 53 retroreflector 53 gamma rays 53 submillimetre 53 submillimeter galaxies 53 Heterodyne Instrument 53 blazar 53 THz radiation 53 IR wavelengths 53 windshield wiper maneuver 53 prograde 53 Diviner instrument 53 Descent Imager Spectral Radiometer 53 collisional 53 gravitational pulls 53 Uranus Jupiter 53 convection currents 53 Rossby waves 53 imaging spectrometer 53 Concentrated solar 53 Fermi LAT 53 Martian moons Phobos 53 AB Aurigae 53 planetary transits 53 Envision Solar www.envisionsolar.com 53 spectral fingerprint 53 Laser Interferometer Gravitational Wave 53 Comet Halley 53 planets Uranus 53 photons emitted 53 gravitational interaction 53 Alfvén waves 53 natural radioactive decay 53 Muchachos Observatory 53 luminous galaxies 53 NASA Gamma ray 53 Comet 9P/Tempel 1 53 remote sensing instruments 53 Gamma ray bursts GRBs 53 electron volts eV 53 meteoroid 53 Cassini Image 53 CMB radiation 53 comet flyby 53 rotational axis 53 masers 53 ESA Planck 53 Uranus Neptune 53 planet Gliese #g 53 solar prominences 53 protostars 53 planets atmospheres 53 protoplanetary discs 53 Beta Pictoris 53 Mars moon Phobos 53 Super Earths 53 interstellar boundary 53 spacecraft Cassini 53 Orion nebula 53 emit photon 53 Relations Observatory STEREO 53 gamma ray detectors 53 Planck telescope 53 lunar crust 53 Supernovae 52 circular orbits 52 X ray Spectrometer 52 Butterfly Nebula 52 antineutrinos 52 microscopic bubbles 52 mineral olivine 52 dust enshrouded 52 cometary debris 52 AU Mic 52 mineralogical mapping 52 chromosphere 52 Shri Kulkarni 52 colliding asteroids 52 galaxies nebulae 52 moons orbiting Saturn 52 superfluids 52 impactors 52 moon Phobos 52 planetary surfaces 52 WISE telescope 52 Neutron Detector 52 emission spectrometer 52 synchronous polar 52 Milky Way Galaxy 52 muon neutrinos 52 astrophysical 52 Della Moen 52 habitable worlds 52 oceanography meteorology 52 NASA THEMIS 52 thermal convection 52 Marc Kuchner 52 magnetotail 52 Dynamics Observatory SDO 52 spacecraft flyby 52 radial velocity technique 52 Exoplanets 52 twin STEREO spacecraft 52 Scientists theorized 52 chondrules 52 multiband imaging photometer 52 electron accelerator 52 supermassive 52 lunar landers 52 gravitational tugs 52 ultraviolet wavelengths 52 Gamma ray 52 terahertz waves 52 geothermal tidal 52 galactic cores 52 Zeta Ophiuchi 52 superconducting magnetic 52 OGLE TR #b 52 tokamaks 52 Image NASA JPL 52 X ray emitting 52 Michelson interferometer 52 galactic clusters 52 buckypaper virtually 52 electron flux 52 Shepherding Spacecraft 52 Imec performs world 52 physics astrophysics 52 equatorial latitudes 52 supercooled liquid 52 colliding protons 52 atmospheric circulations 52 Cherenkov radiation 52 Hanny Voorwerp 52 binary asteroid 52 rovers solar panels 52 EarthCARE 52 Lagoon Nebula 52 stratospheric clouds 52 Gravitational lensing 52 NuSTAR 52 Voorwerp 52 BepiColombo 52 proton particles 52 micrometeoroid impacts 52 lunar orbiters 52 PSR B# +# 52 UV wavelengths 52 Mandushev 52 colliders 52 planets moons 52 reflection nebula 52 cometary material 52 NASA satellites orbiting 52 TrES 4 52 radioactive decay 52 Sagittarius B2 52 microquasar 52 primordial ingredients 52 Triangulum Galaxy 52 WMAP satellite 52 Aurigid 52 prebiotic molecules 52 Trifid 52 constellation Lacerta 52 linearly polarized 52 SMBH 52 Ultraviolet Optical Telescope 52 Trapezium 52 exoplanets orbiting 52 Photons 52 Seyfert galaxies 52 Alpha Rotary Joints 52 emission nebula 52 COROT 7b 52 Saturnian moon 52 electric ion propulsion 52 Terahertz waves 52 NASA twin STEREO 52 Svedhem 52 stellar occultation 52 electron neutrinos 52 Dan Durda 52 planetary astronomer 52 SIM PlanetQuest 52 Laser Interferometer Space 52 interstellar grains 52 Veil Nebula 52 UCO Lick 52 solar neutrinos 52 Quadrantid 52 ionized molecules 52 Comet Hartley 2 52 infrared observatory 52 Comet Encke 52 RPWS 52 moon Mimas 52 scanning electron microscopes 52 RS Ophiuchi 52 astronomical observatories 52 elliptical galaxy 52 microshutters 52 Solar Optical Telescope 52 Sun synchronous orbit 52 cryogenically cooled 52 GJ#b 52 GRB #B 52 elliptical orbits 52 gamma ray observatories 52 star Beta Pictoris 52 interstellar dust 52 spatially resolved 52 orbiting Chandra 52 La Silla observatory 52 emits gamma rays 52 CMEs 52 Solar Dynamics Observatory 52 electron beams 52 lowermost mantle 52 gravitational wave 51 terrestrial planets 51 Interplanetary Kite craft 51 planetary nebulae 51 magnetic reconnection 51 Director Charles Elachi 51 Orionid 51 gaseous planet 51 transiting exoplanets 51 highly magnetized neutron 51 accreting 51 Comet Elenin 51 Extreme Ultraviolet Imaging Spectrometer 51 APXS 51 nebulas 51 dusty disks 51 thermal insulation coatings 51 auroral activity 51 constellation Aquarius 51 Comet #P 51 Crab pulsar 51 highly collimated 51 methyl cyanide 51 hadron 51 cosmic ray 51 habitable zones 51 submillimeter wavelength 51 gamma ray photons 51 visit http:/saturn.jpl.nasa.gov 51 germanium silicon 51 Mercury Uranus 51 AERONET 51 Hubble Space Telescope HST 51 gamma ray bursts GRBs 51 BP Psc 51 Shackleton Crater 51 ionised 51 exobiology 51 zodiac constellations 51 planemos 51 solar insolation 51 Pluto Kuiper Belt 51 Infrared Pathfinder Satellite 51 Dwarf galaxies 51 starburst galaxies 51 nanomechanics 51 Yinghuo 1 51 astronomical objects 51 coronal mass ejections 51 galactic nucleus 51 volcanic lava flows 51 absorption spectra 51 detect gravitational waves 51 IntergalaticEarth 51 planetary missions 51 biosignatures 51 Comet Holmes 51 nucleon 51 cosmological parameters 51 EPOXI spacecraft 51 Observatory STEREO 51 Elenin 51 collimated 51 concentrator photovoltaics 51 Henize #-# 51 substorms 51 Atacama Large Millimeter Array 51 Mössbauer 51 Saturnian system 51 emit electromagnetic waves 51 JIMO 51 wind biomass geothermal 51 Mini Thermal Emission 51 Photovoltaic panels 51 mu Arae 51 GLAST telescope 51 harmful ultraviolet radiation 51 substorm 51 thermonuclear fusion 51 spokesman Michael Braukus 51 photoelectrochemical 51 Lika Guhathakurta 51 hypersonic speeds 51 relativistic protons 51 N. Rathnasree 51 Saharan Desert 51 cosmic microwave radiation 51 WASP #b 51 Planetary nebulae 51 supernovae explosions 51 NASA STEREO 51 Orbital Debris 51 Yarkovsky effect 51 SPIRE instrument 51 Saturn moons Titan 51 situ measurements 51 yttrium barium copper 51 dwarf galaxy 51 Jupiter icy moons 51 dirty snowballs 51 Orionids 51 Ringed Planet 51 magnetic fields 51 silicate grains 51 Saturnian moon Titan 51 stellar seismology 51 rotating neutron 51 Cosmic Background Explorer COBE 51 IRAS #-# 51 magma ocean 51 VISTA telescope 51 gluon 51 Earth thermosphere 51 infrared photons 51 celestial phenomena 51 Martian craters 51 Hot Jupiters 51 robotic landers 51 P/# A2 51 Aqua satellite 51 supersymmetric particles 51 STEREO spacecraft 51 galaxies collide 51 runaway thermonuclear 51 Hyakutake 51 crewed spacecraft 51 Mars Uranus Neptune 51 SOLO TREC 51 HII regions 51 topographical characteristics 51 frictional heating 51 galaxy supermassive black 51 helium atom 51 cometary dust 51 cosmic ray protons 51 Earthlike planets 51 Fomalhaut b 51 infrared telescope 51 gamma ray telescopes 51 uncharged particles 51 particle smasher 51 Delta Cephei 51 metallicity 51 Coma cluster 51 Earthlike 51 Oort cloud 51 Bernhard Fleck 51 constellation Ursa Major 51 proton proton 51 MARSIS radar 51 neutrons protons 51 wavelength infrared 51 BLG #Lb 51 GRB #A 51 X ray Imager 51 Corot 7b 51 Ultraviolet rays 51 Milankovitch cycles 51 galactic bulge 51 Arecibo radar 51 Meteor showers 51 energetic gamma rays 51 Fornax cluster 51 radioactive nuclides 51 meteorite impacts 51 precess 51 outer heliosphere 51 titanium aluminide 51 Wide Angle Search 51 Spectroscopic Explorer 51 absorb neutrons 51 frozen sunless 51 THEMIS probes 51 Dan Werthimer 51 tidal tails 51 aboard ESA Envisat 51 brightest meteors 51 comet nuclei 51 Swift Tuttle 51 atmospheric aerosols 51 terawatt 51 exo planet 51 comet orbit 51 GROND 51 KBOs 51 Earths orbiting 51 gravity warps 51 meridional flow 51 Anisotropy Probe WMAP 51 solar 51 synchrotron emission 51 sulfate aerosols 51 interferometers 51 Jon Giorgini 51 spaceborne 51 photon beam 51 observing satellites 51 distant galaxies 51 X ray spectroscopy 50 Comet #P/Churyumov-Gerasimenko 50 novae 50 TGI Solar TSPG 50 polar mesospheric clouds 50 atmospheric reentry 50 Anisotropy Probe 50 coronal magnetic field 50 galactic halo 50 supernova remnant 50 Jupiter Saturn 50 undiscovered particle 50 particles emitted 50 orbits Saturn 50 Larry Mastin USGS 50 Carina Nebula 50 basaltic rocks 50 Shuttle undocks 50 MINOS experiment 50 penumbral shadow 50 Astrophysics MOA 50 Tycho supernova remnant 50 Planetary Transits 50 Synchrotron radiation 50 NASA QuikScat satellite 50 Type Ia supernova 50 NASA Far Ultraviolet 50 Magnetic Imager HMI 50 polar stratospheric 50 Shuttle Discovery docks 50 photomultiplier tubes 50 supernovae explode 50 quantum dot lasers 50 ultracold temperatures 50 planetoids 50 galactic cosmic radiation 50 carbonate globules 50 magnetically levitated trains 50 ion thruster 50 spectral characteristics 50 EPOCh 50 giant elliptical galaxy 50 backsheet materials 50 Red Rectangle 50 spectroscopic analysis 50 Extrasolar planets 50 comet Churyumov Gerasimenko 50 exoplanet hunter 50 Heliospheric Observatory 50 neutron stars 50 Huygens lander 50 Jedicke 50 dexterous robot 50 Quadrantid meteor shower 50 Eric Becklin 50 terahertz radiation 50 spacecraft 50 Composite Infrared Spectrometer 50 thermal gradients 50 Gondolo 50 detect neutrinos 50 orbiting telescopes 50 distant quasar 50 Magnetic Imager 50 submillimeter wavelengths 50 Alpha Particle 50 Voyager spacecraft 50 ultracold molecules 50 photoelectrochemical cell 50 Jupiter Icy Moons 50 HIP #b 50 LOFAR 50 Rosetta lander 50 Invisibility cloak 50 constellation Cetus 50 comet nucleus 50 lunar meteorites 50 magnetic spectrometer 50 orbital resonance 50 Mars Uranus 50 lobate scarps 50 neutron radiation 50 spatially coherent 50 constellation Aquila 50 Polycyclic aromatic hydrocarbons 50 blocks harmful ultraviolet 50 gamma ray spectrometer 50 HL Tau 50 Dust devils 50 Saturnian 50 extragalactic planet within 50 lunar perigee 50 constellation Vulpecula 50 gravitational lenses 50 Plate tectonics 50 isotope fractionation 50 crustal plates 50 Inc CSIQ CSIQ 50 Heliospheric 50 moon Ganymede 50 Andromeda halo 50 glows brightly 50 NGC #A 50 Antennae Galaxies 50 dipole magnets 50 spectroscope 50 LRO spacecraft 50 duration spaceflights 50 ultraviolet radiation emitted 50 SN #A 50 lunar craters 50 colder denser 50 planets orbiting distant 50 axial tilt 50 Eta Carinae 50 ERDAS creates 50 Arches Cluster 50 Doppler shifts 50 foreground galaxy 50 solitons 50 NASA Atmospheric Infrared 50 exoplanet atmospheres