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(Click for frequent words.) 70 cosmic rays 70 galactic cosmic rays 62 ultra violet radiation 60 neutron radiation 60 ultraviolet UV radiation 59 icy comets 59 cosmic ray 59 Gamma rays 59 electromagnetic radiation 59 energetic electrons 59 Cosmic rays 59 radiation 58 Cosmic Radiation 58 ionizing radiation 58 galactic cosmic ray 57 radiations 57 gamma rays 57 ultraviolet radiation 57 meteoroids 57 micro meteorites 57 comets asteroids 56 Ulysses spacecraft 56 Earth ionosphere 56 gamma rays emitted 55 radioactive decay 55 ultraviolet radiation emitted 55 Galactic cosmic rays 55 APXS 55 planet magnetosphere 55 microwave radiation 55 radiation emitted 54 Martian dust 54 magnetosphere 54 micrometeoroids 54 alpha particles 54 harmful ultraviolet radiation 54 Saturn magnetosphere 54 UV radiation 54 aerosol particles 54 gamma radiation 53 electromagnetic signals 53 O OREOS 53 martian atmosphere 53 electromagnetic waves 53 meteorite impacts 53 coronal holes 53 microgravity environment 53 Earth magnetosphere 53 coronal mass ejections CMEs 53 ionosphere 53 meteoroid 53 laser altimeter 52 CMB radiation 52 interstellar medium 52 coronal loops 52 heliosphere 52 cosmic ray particles 52 gamma ray emission 52 solar flares 52 accretion disks 52 ultraviolet radiation UVR 52 interstellar clouds 52 Martian rovers 52 Antarctic Dry Valleys 52 planetary surfaces 52 highly elliptical orbits 52 ultraviolet light 52 hypersonic speeds 52 volcanic plumes 52 X rays gamma rays 52 magnetic fields 52 elongated orbits 51 phyllosilicates 51 ultraviolet UV rays 51 ejecta 51 laser irradiation 51 NEAs 51 particle acceleration 51 exosolar planets 51 geomagnetic storms 51 interstellar particles 51 galactic disk 51 mesosphere 51 comet Tempel Tuttle 51 HIP #b 51 heliosphere shields 51 meteoritic material 51 magnetospheric 51 UVB radiation 51 oxidized mercury 51 ESA Integral 51 thermosphere 51 neutron spectrometer 51 Ultraviolet rays 51 THz radiation 51 natural radioactive decay 51 harmful ultraviolet 51 olivine mineral 51 TGFs 51 Manned missions 51 electromagnetic flux 51 water vapor 51 gravitational radiation 51 hypervelocity 51 photochemical reactions 51 starquakes 51 EPOCh 50 terahertz waves 50 comet nucleus 50 ultraviolet sunlight 50 Alfven waves 50 X ray spectrometer 50 ultraviolet rays 50 sun ultraviolet rays 50 Ultraviolet radiation 50 harmful ultraviolet rays 50 carbonate minerals 50 gamma ray flashes 50 X ray wavelengths 50 electromagnetic 50 interplanetary spacecraft 50 helium atoms 50 Hubble orbits 50 ionized particles 50 galactic cosmic radiation 50 muons 50 asteroids comets 50 spectroscopic analysis 50 ionised 50 ultra violet rays 50 GCRs 50 overlying layers 50 X ray pulses 50 GJ#b 50 impactors 50 Comet Tempel Tuttle 50 plasmasphere 50 Kuiper Belt Objects 50 asteroids 50 circumstellar 50 Mössbauer 50 infalling gas 50 meteor impacts 50 atmospheric aerosols 50 UV photons 50 protoplanetary disk 50 mineralogical composition 50 Earth magnetotail 50 superheavy elements 50 Cosmic ray 50 situ measurements 50 electromagnetic radiations 50 frequency electromagnetic waves 50 solar nebula 50 micrometeorite 50 Upsilon Andromedae b 49 cosmic particles 49 exhaust plume 49 ionise 49 exosphere 49 Planck spacecraft 49 atmospheric turbulence 49 Richard Mushotzky 49 volcanic ashes 49 cometary particles 49 silicon monoxide 49 electromagnetic fields 49 radioisotope thermoelectric generators 49 chemically reactive 49 tholins 49 supernova explosions 49 electromagnetic pulses 49 airglow 49 Oort Cloud 49 X ray emission 49 circumstellar disk 49 Ionizing radiation 49 magma molten rock 49 hydrated minerals 49 antineutrinos 49 UVA radiation 49 cometary 49 RHESSI 49 Spitzer infrared spectrograph 49 magnetic substorms 49 solar corona 49 Ken Herkenhoff 49 Fermi telescope 49 moonquakes 49 gravitational keyhole 49 mineral olivine 49 stratospheric clouds 49 Jupiter magnetosphere 49 gamma ray observatory 49 geomagnetic activity 49 radioactive nuclei 49 exoplanetary 49 comets 49 helium nuclei 49 asteroidal 49 ESA XMM Newton 49 basaltic rocks 49 infalling 49 stellar seismology 49 sun ultraviolet radiation 49 asteroid 49 extragalactic 49 chromosphere 49 geoneutrinos 49 Solar TErrestrial RElations Observatory 49 permanently shadowed craters 49 RS Ophiuchi 49 convection currents 49 nebular 49 Alfvén waves 49 hydroxyl molecules 49 tiny airborne particles 49 Comet 9P/Tempel 1 49 visible wavelengths 49 icy moons 49 planetary atmospheres 49 gravitons 48 Corot 9b 48 planetary orbits 48 particles WIMPs 48 jovian 48 gluon 48 occultations 48 radiation exposure 48 Venusian atmosphere 48 Epsilon Eridani 48 infrared photons 48 periodic dimming 48 Rayleigh scattering 48 orbiting planets 48 WASP #b 48 Heliospheric Observatory SOHO 48 comet nuclei 48 gravity warps 48 harmful ultraviolet UV radiation 48 particles 48 protoplanetary disks 48 Earth orbiting satellites 48 electron neutrinos 48 SINFONI 48 fainter objects 48 interstellar dust 48 outer space 48 cometary dust 48 Alycia Weinberger 48 infrared spectrometers 48 planetary Transits 48 radioactivity 48 sun UV rays 48 blazar 48 radar interferometry 48 lunar regolith 48 terahertz radiation 48 damaging ultraviolet rays 48 Late Heavy Bombardment 48 NASA Far Ultraviolet 48 heliosheath 48 spectral fingerprints 48 energetic cosmic rays 48 Cancri e 48 gravitational lens 48 crewed spacecraft 48 regolith 48 CAIs 48 HD#b 48 nuclides 48 gravitational wave 48 Alpha Particle 48 Carey Lisse 48 comets orbiting 48 photosphere 48 Radiation 48 updrafts 48 Dan Durda 48 cosmic microwave radiation 48 sulfate aerosols 48 Churyumov Gerasimenko 48 gravitational tides 48 stellar nurseries 48 Distant galaxies 48 Quadrantid 48 radiofrequency waves 48 Cosmic Microwave Background CMB 48 auroral displays 48 gravitational 48 electrostatic discharges 48 neutrinos 48 oxygen ions 48 weakly interacting 48 nucleosynthesis 48 sodium atoms 48 longwave radiation 48 radiofrequency radiation 48 Muons 48 cosmological distances 48 neutrons 48 ionized radiation 48 moon Io 48 gravitational acceleration 48 tardigrades 48 barometric pressures 48 cosmic ray intensity 48 orbital debris 48 metallicity 48 sun harmful ultraviolet 48 radiative 48 Compact Reconnaissance Imaging Spectrometer 48 inhabitable planets 48 lunar soil 48 Rossby waves 48 volcanic dust 48 surface plasmons 48 Cabeus 48 gravitational waves 47 Tempel Tuttle 47 submillimeter 47 satellites orbiting Earth 47 Saturn moon Enceladus 47 Saharan dust 47 Cosmic Microwave Background 47 Raman scattering 47 binary asteroid 47 nanobubbles 47 Martian rocks 47 interstellar 47 airbursts 47 microplastics 47 infrared observatory 47 Kuiper belt objects 47 IBEX spacecraft 47 Type Ia supernovas 47 chlorine peroxide 47 carbonate globules 47 X ray observatory 47 Foton M3 47 UV light 47 distant supernovas 47 plasmons 47 X ray telescopes 47 Yinghuo 1 47 solitons 47 outer planets 47 antimatter particles 47 planets orbiting stars 47 graphite whiskers 47 alpha particle 47 endospores 47 mantle plumes 47 Planck telescope 47 Mercury magnetosphere 47 millimeter wavelengths 47 invisible odorless tasteless 47 HiRISE image 47 thermal gradients 47 Fermi Telescope 47 Jupiter icy moons 47 spatially resolved 47 Thermal Emission Spectrometer 47 planetary nebulae 47 Hawking radiation 47 Martian polar 47 microgravity 47 planets atmospheres 47 primitive meteorites 47 astrophysical objects 47 X ray Spectrometer 47 lunar equator 47 supernova explosion 47 toxic hydrazine 47 electro magnetic waves 47 wake vortices 47 lunar meteorites 47 extrasolar planetary systems 47 planets asteroids 47 Nasa spacecraft 47 astronomical objects 47 comet tail 47 radiative cooling 47 Earthlike planet 47 afterglows 47 telescopic observations 47 STEREO spacecraft 47 particles emitted 47 Relations Observatory STEREO 47 comets meteors 47 aboard ESA Envisat 47 astrobiological 47 Jovian moon 47 Earth radii 47 EPOXI spacecraft 47 active galactic nuclei 47 cometary material 47 millimeter wavelength 47 ion collisions 47 stellar occultations 47 laser spectroscopy 47 cometary debris 47 axial tilt 47 ionizing 47 Mars Odyssey spacecraft 47 distant supernovae 47 ultra violet UV rays 47 GRB #B 47 neutrino particles 47 interstellar grains 47 gamma ray detectors 47 sunlike stars 47 moon gravitational pull 47 ultrashort pulses 47 type Ia supernova 47 Yarkovsky effect 47 starburst galaxies 47 comet dust 47 radiosondes 47 polar vortex 47 Jupiter moon Io 47 jet contrails 47 melt inclusions 47 emit X rays 47 infrared radiation 47 gamma ray flares 47 electromagnetic interference 47 active galactic nucleus 47 Foton M2 47 antigravity 47 cosmic ray flux 47 Viking Lander 47 P/# A2 47 gravitational pulls 47 radioactive nuclides 47 comet particles 47 ultraviolet UV light 47 Infrared Pathfinder Satellite 47 NASA Stratospheric Observatory 47 C1XS 46 permanently shadowed 46 Gravitational waves 46 COROT 7b 46 hematite mineral 46 sulphate particles 46 electron beams 46 ozone layer shielding 46 Bonnie Buratti 46 ionized gases 46 robotic explorer 46 emits alpha 46 interstellar space 46 imaging spectrometer 46 harmful UV radiation 46 albedo reflectivity 46 electrons positrons 46 subatomic particle 46 exo planets 46 coronal heating 46 Nanobacteria 46 Herbig Haro 46 relativistic particles 46 spectroscopic measurements 46 radial velocity method 46 orbital eccentricity 46 distant galaxies 46 carbonaceous chondrite 46 Josefino Comiso 46 volcanic plume 46 Nasa Mars Reconnaissance 46 sulphate aerosols 46 soliton 46 detect gamma rays 46 emits gamma rays 46 ESA Cluster 46 polarimetric 46 Planck satellite 46 ionize 46 Huygens spacecraft 46 polar mesospheric clouds 46 CoRoT 9b 46 Saturn Enceladus 46 Magnetars 46 polar stratospheric 46 exoplanets planets 46 noctilucent clouds 46 Pluto Charon 46 dimming starlight 46 MARSIS radar 46 solar neutrinos 46 ultraviolet wavelengths 46 antiproton 46 cometary impacts 46 Uninhabited Aerial Vehicle 46 Anthony Remijan 46 deep convective clouds 46 Martian terrain 46 topological insulators 46 ablator 46 Mate Adamkovics 46 hypobaric hypoxia 46 Solar flares 46 x ray beam 46 diffraction 46 spherules 46 spacecraft 46 Murchison meteorite 46 carbonaceous chondrites 46 UV radiations 46 backscattered 46 Mars# experiment 46 Iodine counteracts 46 tiny meteoroids 46 Mandushev 46 gamma ray burst 46 Higgs bosons 46 planemos 46 OGLE TR #b 46 gravitational perturbations 46 magnetic reconnection 46 asteroid impacts 46 subsurface ocean 46 volcanic gases 46 Saturnian 46 thermal diffusivity 46 electromagnetic radiation emitted 46 orbiting spacecraft 46 unmanned probes 46 rovers solar panels 46 atmospheric convection 46 comet 46 NuSTAR 46 gravitational tugs 46 Mars CRISM 46 Comet Hartley 2 46 Curiosity rover 46 lunar crust 46 jarosite 46 ENAs 46 impactor spacecraft 46 lava tubes 46 NASA THEMIS 46 Bessel beam 46 chondrules 46 rubidium vapor 46 Bernhard Fleck 46 X ray photons 46 ejecta blanket 46 exoplanets orbiting 46 NASA Stardust spacecraft 46 blazars 46 mutagens 46 Martian craters 46 meteorological phenomena 46 Photons 46 energetic gamma rays 46 gamma ray photons 46 VY Canis Majoris 46 asteroid collisions 46 astrophysical 46 substorm 46 RXTE 46 Astrophysical 46 UV rays 46 Context Camera 46 Fermi Gamma ray 46 Oort cloud 46 aerosols 46 Mini SAR 46 Saturn moon Mimas 46 colloidal crystals 46 lunar perigee 46 ionized gas 46 magnetotail 46 superfluids 46 silicate mantle 46 BepiColombo 46 Deep Impact comet 46 optical wavelengths 46 -# degrees Fahrenheit [002] 46 protons collide 46 gaseous envelope 46 high redshift galaxies 46 cirrus clouds 46 GJ #b [001] 46 ballistic trajectory 46 planet Gliese #g 46 galaxy redshift 46 Mars landers 45 neutralinos 45 elemental abundances 45 synchrotron x ray 45 mrem 45 hydrosphere 45 redshifted 45 Earthly contamination 45 Fermi LAT 45 Comet Halley 45 cosmic gamma rays 45 chlorophyll fluorescence 45 photochemical reaction 45 Gamma ray bursts 45 molten magma 45 photometer 45 Ozone depletion 45 magnetic flux 45 Orbital Debris 45 UV irradiation 45 spicules 45 obscuration 45 gravitational interaction 45 phyllosilicate 45 protoplanet 45 hypernova 45 Michael Studinger 45 duration spaceflights 45 mesospheric 45 perchlorates 45 geomagnetic field 45 interstellar dust grains 45 Samuel Oschin Telescope 45 chlorine monoxide 45 WISE spacecraft 45 orbital inclination 45 KAGUYA 45 laser pulses 45 planets comets 45 emit electromagnetic waves 45 magma ocean 45 Saturnian moon Titan 45 heliospheric 45 interstellar dust clouds 45 specular reflection 45 CMEs 45 dust particles 45 Magnetic Imager HMI 45 oppositely directed 45 hydrazine tank 45 extrasolar 45 cosmic collisions 45 Swift Tuttle 45 polar craters 45 Soyuz landings 45 Contrails 45 stratospheric ozone 45 RRATs 45 Apollo missions 45 neutrino 45 electromagnetic fields EMFs 45 microquasar 45 explosive eruptions 45 Electromagnetic waves 45 dose ionizing radiation 45 voltage spikes 45 Ultraviolet light 45 micrometeorites 45 NASA Kepler telescope 45 electronic excitations 45 interstellar distances 45 Neutrons 45 Solar Dynamics Observatory 45 astrophysical phenomena 45 noble gases 45 photons 45 Huygens descent 45 muon 45 corona discharge 45 OSIRIS REx 45 gamma ray spectrometer 45 infrared astronomy 45 faint galaxies 45 CoRoT satellite 45 magnetic anisotropy 45 gravitational slingshot 45 helium ions 45 Rydberg atom 45 Gamma ray burst 45 journal Meteoritics 45 galactic bulge 45 outer layers 45 relativistic jets 45 planet HD #b 45 positrons 45 SPIRE instrument 45 infrared telescopes 45 Super Kamiokande 45 lunar craters 45 tropical latitudes 45 backscatter scans 45 #P/Churyumov-Gerasimenko 45 Upsilon Andromedae 45 iodine uptake 45 CMB photons 45 Jupiter Ganymede 45 Geminid 45 Martian lander 45 electro magnetic fields 45 electrosmog 45 thruster firings 45 vulnerable thermal shielding 45 infra red radiation 45 supercooling 45 blocks harmful ultraviolet 45 invisibility cloaking 45 ballistic descent 45 AGNs 45 gaseous planet 45 sulfuric acid droplets 45 ultrasonic waves 45 MG J# +# 45 intrinsic brightness 45 harmful radiations 45 pyroxene 45 STSS Demo 45 planets orbiting distant 45 Comet Hartley 45 RAINEX 45 downwelling 45 silicates 45 Martian atmosphere 45 baryon 45 Gamma ray 45 Kuiper Belt Object 45 Martian 45 Corot 7b 45 RQ# 45 galactic magnetic 45 BP Piscium 45 colliding protons 45 biosignatures 45 atomic nucleus 45 radionuclides 45 CALIPSO 45 sulfate aerosol 45 particle astrophysics 45 tau neutrinos 45 Extrasolar planets 45 Fomalhaut b 45 particle colliders 45 lunar surface 45 atmospheric phenomena 45 Type Ia supernova 45 strange quark 45 Haumea 45 protostar 45 neutrons emitted 45 ionospheric 45 sulfur isotope 45 YU# 45 Cherenkov radiation 45 Laser beams 45 antineutrino 45 XMM Newton 45 planetesimals 45 Hakan Svedhem 45 supergiant star 45 Itokawa 45 inner Oort Cloud 45 MeV 45 magnetar 45 radar altimeter 45 americium 45 lavas 45 superheated gases 45 orbiting gamma ray 45 mantle convection 45 comet flyby 45 silicate minerals 45 shadowed craters 45 earth orbiting satellites 45 magnetic excitations 45 particle 45 Orbiter MRO 45 interstellar boundary 45 coronal loop 45 collisional 45 Martian surface 45 organic molecules 45 primordial ingredients 45 Perseus Cluster 45 Ionising radiation 45 cosmic phenomena 45 elongated orbit 45 magmas 45 accretion disk 45 electro magnetic radiation 45 journal Acta Astronautica 45 photochemistry 45 Cometary 45 Mars Color Imager 45 HD# [002] 45 spectral measurements 45 potentially habitable planets 45 circumstellar dust 45 atmospheric disturbances 45 Apophis asteroid 45 Magnetospheric 45 runaway thermonuclear 45 GZK cutoff 45 Terahertz radiation 45 alien beings 45 geomagnetic storm 45 Toutatis 45 Noctilucent clouds 44 Martian equator 44 laser pulse 44 shadowy craters 44 proplyds 44 backscatter X rays 44 silicate dust 44 rotational axis 44 circumstellar disks 44 permanently shadowed regions 44 volcano ash 44 NASA Wilkinson Microwave 44 Descent Imager Spectral Radiometer 44 electron ion 44 Ultraviolet UV radiation 44 Gliese #c 44 moonlets 44 sun corona 44 polar regions 44 Evolution Explorer 44 gamma ray radiation 44 Microlensing 44 electromagnetic frequencies 44 atmospheric 44 thinner skulls 44 Mars Lander 44 celestial objects 44 sterile neutrino 44 antiprotons 44 gravitationally 44 antihelium 4 44 gravitational interactions 44 electrons protons 44 Infrared Astronomy SOFIA 44 comet Churyumov Gerasimenko 44 Svedhem 44 NASA MESSENGER spacecraft 44 EMFs 44 Neutrinos 44 interstellar cloud 44 meteoroid impacts 44 earthlike planets 44 sun ultraviolet UV 44 Microscopy Electrochemistry 44 vibrations 44 KBOs 44 prominences 44 SMBH 44 comet Wild 44 astrobiologists 44 non ionizing 44 Maunder minimum 44 retroreflector 44 emits X rays 44 linearly polarized 44 radionuclide 44 planetary astronomer 44 Jean Pierre Bibring 44 photons emitted 44 atmospheric circulations 44 ChemCam 44 Cloud Aerosol Lidar 44 spacecraft flyby 44 outer corona 44 supermassive stars 44 isotope fractionation 44 axions 44 planetoids 44 Huygens mission 44 cosmic microwave background 44 millisieverts mSv 44 protoplanets 44 Astrophysics MOA 44 UVB UVA 44 AU Mic 44 Neutron stars 44 comet orbit 44 diffuse aurora 44 cirrus cloud 44 intermetallic 44 Gravitational lensing 44 quantum particle 44 assumed planets circling 44 ionizing irradiation 44 isotopic ratios 44 martian 44 diffraction patterns 44 silicate rocks 44 closest flyby 44 cosmogenic 44 Earth orbit 44 spacecrafts 44 synthetic aperture 44 Aurigid 44 post perovskite 44 perfluorinated compounds PFCs 44 sized planets orbiting 44 retrograde orbit 44 Sibeck 44 Galaxy Evolution 44 Gliese #d 44 cosmic ray collisions 44 Advanced Microwave Scanning 44 Earthlike 44 Asteroid Itokawa 44 Delta Cephei 44 AERONET 44 photoluminescence 44 GRB# 44 orbiting observatories 44 radioactive particles 44 sunlight 44 electron scattering 44 Ray Spectrometer 44 outerspace 44 Meteor showers 44 potent carcinogen 44 sievert 44 oxidizing agents 44 Martian meteorite 44 photon 44 Wolszczan 44 Polar Regions 44 binary asteroids 44 nanomesh 44 AB Aurigae 44 GALEX 44 plasmon 44 planet Gliese #c 44 duration spaceflight 44 gravitational lensing 44 Cabeus crater 44 CALIPSO satellites 44 Exoplanet 44 polarimetry 44 particle beams 44 coronal mass ejections 44 Milky Way Galaxy 44 electromagnetic pulse EMP 44 olivine 44 Mars orbiting spacecraft 44 UV exposure 44 cosmic neutrinos 44 synchrotron emission 44 binds particles 44 harmful UVB rays 44 X ray emitting 44 spherically symmetric 44 GROND 44 circularly polarized 44 sunrays 44 protons 44 yardangs 44 volcanic activity 44 ray Space Telescope 44 gamma ray bursts GRBs 44 planets orbits 44 carry heavier payloads 44 Impact Probe MIP 44 diffracted 44 HiRISE images 44 hypersonic missiles 44 gravitational redshift 44 pions 44 silica particles 44 smallest exoplanet 44 quasiparticle 44 irregularly shaped asteroid 44 geomagnetic substorms 44 UAVSAR 44 Comet Churyumov Gerasimenko 44 ionizing radiations 44 positron 44 stratospheric ozone depletion 44 ionized plasma 44 electron beam radiation 44 X ray beam 44 KamLAND 44 diffract 44 SN #gy 44 orbiter 44 Asteroid Belt 44 atomic nuclei 44 fiery reentry 44 crystalline silicates 44 photon energies 44 Earth biosphere 44 Ultrafine particles 44 gravitational lenses 44 Earth thermosphere 44 atmospheric pollutants 44 Stimulated Emission 44 V# Mon 44 merging galaxies 44 ionized molecules 44 diffusive