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(Click for frequent words.) 57 energetic electrons 54 ionized particles 54 geyser plumes 54 cometary debris 53 substorm 52 oppositely directed 52 hypersonic speeds 52 magnetotail 52 Earth magnetosphere 51 earthwards 51 relativistic speeds 51 volcanic plumes 51 emitted photons 51 martian atmosphere 51 soundwaves 51 Jupiter magnetosphere 51 ballistic trajectories 51 orbital velocity 51 Ulysses spacecraft 51 O OREOS 51 matter antimatter annihilation 50 electron bunches 50 Comet Hartley 50 drogue parachute 50 comet Tempel Tuttle 50 Foton spacecraft 50 Comet Hartley 2 50 resonance frequency 50 infrared laser pulses 50 solar prominences 50 Galileo spacecraft 50 gamma ray astronomy 49 retrorockets 49 X ray pulses 49 magnetic dynamo 49 waning gibbous 49 irregularly shaped asteroid 49 galactic disk 49 Yarkovsky effect 49 shepherding spacecraft 49 Photons 49 cosmic ray particles 49 Cosmic ray 49 ballistic trajectory 49 sodium atoms 49 rubidium vapor 49 tidally 49 earthward 49 evanescent waves 49 gamma ray emission 49 airglow 49 GJ #b [002] 49 slender crescent 48 femtosecond pulses 48 THz radiation 48 planet magnetosphere 48 thruster firings 48 X ray afterglow 48 Nasa spacecraft 48 jovian 48 Earth thermosphere 48 impactor spacecraft 48 interstellar particles 48 supersonically 48 relativistic particles 48 comets orbiting 48 particle beam 48 Hubble orbits 48 Doppler shifts 48 Earth magnetotail 48 laser pulse 48 X ray photons 48 helium ions 48 cosmic microwave radiation 48 afterglows 48 W bosons 48 nanosecond pulses 48 IBEX spacecraft 48 ionized gases 47 Yinghuo 1 47 absorbs photons 47 axial tilt 47 annularity 47 detect gamma rays 47 infrared laser beam 47 Distant galaxies 47 accretion disk 47 Observatory SDO 47 highly elliptical orbit 47 beam splitter 47 Cosmic rays 47 plasmasphere 47 sulphate particles 47 Cherenkov radiation 47 neutrons emitted 47 Geminga 47 sine waves 47 helium atoms 47 superluminal 47 aether 47 Electromagnetic waves 47 Earth radii 47 Earth ionosphere 47 Martian rovers 47 Comet Tempel Tuttle 47 constellation Aquarius 47 photoionization 47 gravitational radiation 47 Atom smasher 47 antineutrinos 47 wavefronts 47 fading afterglow 47 photocurrent 47 parabolic trajectory 47 Mars Orbiter 47 linearly polarized light 47 flyby spacecraft 47 ionised gas 47 emit X rays 47 highly collimated 47 gamma rays emitted 47 Pyroclastic flows 47 hydroxyl molecules 47 Shepherding Spacecraft 47 Earth orbiting satellites 47 interplanetary spacecraft 47 gravitational acceleration 47 electrons protons 47 planetary Transits 47 sun corona 46 sonde 46 meteoroid 46 GRB# 46 electrons positrons 46 electron flux 46 volcanic moon Io 46 Hubble Space telescope 46 Comet Halley 46 helicopter rotors 46 microtones 46 retroreflector 46 gravitational slingshot 46 accretion disks 46 backscattered 46 ion thrusters 46 radiative cooling 46 silicate dust 46 highly elliptical orbits 46 geosynchronous orbit 46 infrared photons 46 ultraviolet wavelengths 46 femtosecond timescale 46 equatorial latitudes 46 coronal hole 46 magnetic flux 46 photon beam 46 magnetopause 46 gibbous 46 #km h [003] 46 HD#b 46 wingbeats 46 downwelling 46 visible wavelengths 46 ionosphere 46 ARGUS IS 46 submillimetre wavelengths 46 Rosetta orbiter 46 inky blackness 46 Casimir cavity 46 Martian orbit 46 ionizes 46 comet orbit 46 VY Canis Majoris 46 CMB photons 46 aboard ESA Envisat 46 UV photons 46 Sun synchronous orbit 46 Cartesian coordinates 46 asteroid flyby 46 cosmic ray 45 NASA MESSENGER spacecraft 45 Jovian moons 45 magnetized plasma 45 geo synchronous 45 Aqua satellite 45 chlorophyll fluorescence 45 drogue chute 45 antiprotons 45 Martian moons Phobos 45 ultrasonic pulses 45 quantum tunneling 45 telescope eyepiece 45 photons 45 maneuvering thrusters 45 Meteor shower 45 polar vortex 45 rotational axis 45 scramjet engine 45 coronal holes 45 Churyumov Gerasimenko 45 terahertz waves 45 gamma rays 45 submillimeter wavelengths 45 photometer 45 parabolic arcs 45 lander rover 45 SIRTF 45 Thrusters 45 equatorial orbit 45 scramjet engines 45 Heterodyne Instrument 45 ENAs 45 #.#nm [002] 45 ecliptic plane 45 synchronous orbit 45 Jovian atmosphere 45 lightwaves 45 photons emitted 45 planets orbits 45 Crab Nebula 45 terahertz rays 45 optical wavelengths 45 spacecraft Cassini 45 laser pulses 45 auroral activity 45 entangled qubits 45 Gamma ray burst 45 heliospheric 45 hypergolic 45 tractor beam 45 sunbeams 45 meridional 45 rocket thrusters 45 V# Sgr 45 infalling 45 THEMIS Images 45 tropical latitudes 45 exoatmospheric kill vehicle 45 electromagnetic flux 45 WISE spacecraft 45 synchrotron x ray 45 solar corona 45 constellation Hercules 45 cirrus cloud 45 Forex AUD JPY 45 blazar 45 muon 45 KAGUYA 45 Express orbiter 45 Foton M2 45 Neutron stars 45 Crab Pulsar 45 neutrino particles 45 EPOXI mission 45 spacecraft 45 MESSENGER spacecraft 45 Gamma rays 45 galactic cosmic rays 45 Heliospheric Observatory SOHO 44 MG J# +# 44 weightlessly 44 tachometer needle 44 speedo needle 44 Saturn moon Mimas 44 advection 44 filamentary structure 44 interstellar dust clouds 44 Rossby waves 44 wavefront distortion 44 emits X rays 44 comet tail 44 cosmological distances 44 deorbit burn 44 Chi Cygni 44 stationary lander 44 Saturn magnetosphere 44 gravitational tides 44 Astronomically speaking 44 isotherms 44 x ray pulses 44 Fermi telescope 44 CMB radiation 44 meridional flow 44 oscillations 44 spaceward 44 longwave radiation 44 X ray emission 44 Fermi gamma ray 44 probe Huygens 44 superfluid helium 44 heliosheath 44 graceful arcs 44 ionized gas 44 arcsecond 44 STEREO spacecraft 44 convective heat 44 Spacecraft 44 Tectonic plates 44 centrifugally 44 Saturn outermost 44 ultrasonic waves 44 galactic halo 44 twin suns 44 Stardust capsule 44 geosynchronous satellite 44 tach needle 44 gravitational pulls 44 amplitudes 44 heliopause 44 submillimeter 44 rhythmic contractions 44 liquid coolant 44 Messenger spacecraft 44 proto planetary disk 44 infrared radiation 44 cosmic collisions 44 Earth gravitational pull 44 colder denser 44 Galactic cosmic rays 44 waxing gibbous moon 44 deflating balloon 44 Huygens Probe 44 Doppler shift 44 RS Ophiuchi 44 quantum particles 44 infalling gas 44 gravitons 44 Venusian atmosphere 44 retrograde orbit 44 Adaptive optics 44 WMAP satellite 44 sunward 44 radians 44 GeV 44 Saturn moons Titan 44 Weightlessness 44 comets asteroids 44 stratocumulus clouds 44 circularly polarized light 44 galaxies collide 44 LCROSS spacecraft 44 gravitational keyhole 44 Comet Lulin 44 periodic dimming 44 circumstellar 44 comet nucleus 44 martian landscape 44 landing superheated gases 44 Bose Einstein 44 orbits Saturn 44 Tempel Tuttle 44 synchrotron emission 44 headlight beams 44 atmospheric moisture 44 protoplanets 44 redshifted 44 THEMIS satellites 44 preset orbit 44 gamma ray observatory 44 SolarBeam 44 groundspeed 44 coronal loop 44 polarimetry 44 gaseous hydrogen 44 SNe Ia 44 UV wavelengths 44 Mars orbiter 44 cosmic ray particle 44 spectral measurements 44 cosmic ray flux 44 scramjet 44 gamma ray flares 44 CERN LHC 44 Crab pulsar 44 blue supergiant 44 Saturn Cassini 43 ejecta 43 gimbaled 43 electric ion propulsion 43 fainter meteors 43 umbral 43 dust motes 43 Huygens descent 43 Fomalhaut b 43 photoelectron 43 NASA Spirit rover 43 collimated 43 waxing gibbous 43 moonquakes 43 Swift Tuttle 43 topological defects 43 Comet 9P/Tempel 1 43 nightside 43 Particle acceleration 43 lava fountains 43 #kt #km h 43 circular orbit 43 hydrazine thrusters 43 asteroid Steins 43 polarized electrons 43 antimatter particles 43 orbital altitude 43 coronal magnetic field 43 frozen sunless 43 planetarium dome 43 Orbiter LRO 43 cometary material 43 Earth asteroid Itokawa 43 meteoroids 43 sulfuric acid droplets 43 dropsondes 43 sunbeam 43 antiproton 43 waxing crescent 43 interstellar clouds 43 copper impactor 43 super nova 43 Orionid 43 magnetosphere 43 waning crescent Moon 43 albedo reflectivity 43 infra red beam 43 fission reaction 43 Deep Impact flyby spacecraft 43 SNR #-#.# 43 X ray beam 43 Corot 9b 43 Shuttle docks 43 Earth rotational axis 43 penumbral shadow 43 interstellar dust 43 distant supernovae 43 starlight 43 Mars Odyssey spacecraft 43 ion propulsion 43 NASA Cassini 43 Crawler Transporter 43 storable propellants 43 gigantic fireball 43 woosh 43 interferometric synthetic aperture radar 43 perihelion 43 satellites orbiting Earth 43 #.#MB/sec [003] 43 magnetic excitations 43 diatomic 43 exosphere 43 spiral galaxy NGC 43 starquakes 43 helium atom 43 proton particles 43 infra red rays 43 Deep Impact comet 43 clumpy soil 43 swirling vortices 43 NASA Stardust spacecraft 43 pericentre 43 magnetic monopoles 43 numbingly draggy sections 43 neutrons 43 lunar orbits 43 cryogenic propellants 43 reddish glow 43 Deep Impact craft 43 noiselessly 43 instrument calibrations 43 planetary transits 43 reentry capsule 43 infall 43 twin Voyager spacecraft 43 jet contrails 43 Indonesia Merapi volcano 43 LAGEOS 43 TanDEM X 43 helium nuclei 43 orbital inclination 43 comet flyby 43 counterclockwise rotation 43 cosmic cannibal 43 geosynchronous satellites 43 Odyssey orbiter 43 cosmic ray protons 43 interstellar dust particles 43 SOLO TREC 43 runaway thermonuclear 43 cesium atom 43 Brookhaven Relativistic Heavy 43 Type Ic supernova 43 constellation Cetus 43 gibbous moon 43 mesosphere 43 Leonid meteors 43 superdense neutron star 43 Infrared Pathfinder Satellite 43 subsonic speeds 43 HD #b [001] 43 obscuration 43 Alfven waves 43 X ray wavelengths 43 VHE gamma rays 43 Quadrantid 43 thin crescent 43 parafoil 43 relativistic protons 43 radiometer 43 velocity vector 43 Solar Dynamics Observatory 43 moons Phobos 43 Planck satellite 43 electron ion 43 novae 43 Muons 43 Saturnian moon 43 X ray telescopes 43 dropsonde 43 ionized plasma 43 cosmic strings 43 celestial sphere 43 meteoritic material 43 xenon lamp 43 cantilever deflection 43 Zeta Ophiuchi 43 Mössbauer 42 type Ia supernova 42 diffract 42 Jupiter flyby 42 stratospheric balloon 42 nanomachine 42 London midmorning Footsie 42 Hipparcos 42 NASA THEMIS 42 X ray binaries 42 infra red radiation 42 hexagonal mirrors 42 lunar equator 42 -# degrees Fahrenheit [002] 42 SGR J# 42 Foton M3 42 arcsec 42 sun irradiance 42 perilune 42 cosmic ray intensity 42 nsec 42 sonoluminescence 42 photon 42 muffled roar 42 electronic excitations 42 Brownian motion 42 pulsations 42 Mars moon Phobos 42 inky sky 42 diffracted 42 waning gibbous moon 42 ion flux 42 circularize 42 Saturn rings 42 Attosecond 42 occultations 42 glows brighter 42 Huygens lander 42 atomic particles 42 stratus clouds 42 lunar perigee 42 aerobraking 42 rocket nozzle 42 rotates clockwise 42 Eta Aquarid meteor shower 42 RRATs 42 synchronous polar 42 Relativistic 42 gravitational interaction 42 Meteor showers 42 float weightlessly 42 orbited Jupiter 42 microgravity environment 42 ultraviolet laser 42 circumstellar disk 42 supergiant star 42 τ 42 moon Mimas 42 fluid viscosity 42 dipole moment 42 LRO LCROSS 42 Soyuz landings 42 elongated orbits 42 tropospheric 42 HM Cancri 42 hyperspace 42 gamma ray flashes 42 Comet Churyumov Gerasimenko 42 lunar orbit 42 Fregat upper stage 42 hyperfast 42 Lyrids 42 brane 42 star IM Pegasi 42 Carina constellation 42 Type Ia supernovas 42 radial velocity 42 airstream 42 WISE telescope 42 photons particles 42 thermosphere 42 zodiacal dust 42 Moessbauer 42 stellar occultation 42 elongated orbit 42 #P/Churyumov-Gerasimenko 42 astrometry 42 magnetospheric 42 spacetime 42 NASA LCROSS 42 COROT 42 Cosmic Microwave Background 42 Taurid 42 Orionid meteor shower 42 Earth orbit 42 suborbital trajectory 42 emission nebula 42 photochemical reactions 42 pneumatic cylinder 42 Schmittner 42 supercurrent 42 polar latitudes 42 Martian terrain 42 starlike object 42 pulse widths 42 bone jarring descent 42 Ice floes 42 Ares Vallis 42 SpaceWeather.com 42 Epsilon Aurigae 42 unpolarized light 42 TGFs 42 temperature gradient 42 circularly 42 neutron radiation 42 wavefunction 42 arcminutes 42 planetesimal 42 LCROSS 42 TrES 4 42 superbubble 42 preset intervals 42 MTSAT 1R 42 Solar TErrestrial RElations Observatory 42 particle analyzers 42 Saturnian system 42 azimuthal 42 electrons 42 shimmering rings 42 telescopically 42 Comet #P/Churyumov-Gerasimenko 42 gluon 42 fpm 42 parachute deploys 42 #μs [002] 42 tropopause 42 MARSIS instrument 42 convection currents 42 Saturnian moons 42 constellation Serpens 42 sulfate aerosols 42 Stardust NExT mission 42 particle acceleration 42 Cloud Aerosol Lidar 42 cosmic rays 42 backscattering 42 collimated beam 42 xenon ions 42 comet McNaught 41 Spitzer infrared spectrograph 41 fainter objects 41 Gravitational 41 Scream floorless coaster 41 predawn sky 41 rustling leaves 41 parabola 41 umbral shadow 41 subatomic particles 41 microscopic nozzles 41 synth textures 41 spinning pulsar 41 atmospheric turbulence 41 m/s2 41 quantum superposition 41 Ranging spacecraft 41 exhaust plume 41 jerkily 41 vortices 41 comet 41 precessing 41 geo stationary orbit 41 beryllium ion 41 DART spacecraft 41 quadrillionths 41 Mars Reconnaissance Orbiter MRO 41 aboard Taurus XL 41 unhurriedly 41 μs 41 Martian dust 41 hypervelocity 41 X #A scramjet 41 photon beams 41 Taurids 41 Laser beams 41 supercooled magnets 41 Vassilis Angelopoulos 41 moon Enceladus 41 vibrational modes 41 gimble 41 orbital insertion 41 photochemical reaction 41 Kelvin Helmholtz 41 supercooled liquid 41 turbo spools 41 Moderate Resolution Imaging 41 LORRI 41 planet orbits 41 photosphere 41 interferogram 41 GOSAT 41 coronagraph 41 compressed nitrogen 41 exo planet 41 Peter Jenniskens 41 MARKET CLOSE NZX 41 spirals inward 41 muons 41 axions 41 Comet #P/Holmes 41 unstowed 41 Crewmate Tracy Caldwell 41 microbot 41 Discovery undocked 41 exponential decay 41 Leonid shower 41 faraway galaxies 41 Quantum teleportation 41 Comet Holmes 41 gamma ray photon 41 kVp 41 Hadron Collider 41 GRBs 41 Vibrio fischeri 41 cryogenic temperatures 41 Saturn equinox 41 propellant tanks 41 Sojourner Rover 41 auroral displays 41 scudding clouds 41 relativistic jets 41 breathing scramjet engine 41 KH #D 41 electrons emitted 41 thermodynamic equilibrium 41 Ultraviolet rays 41 rover panoramic 41 Higgs bosons 41 Dynamics Observatory 41 SMOS 41 outer corona 41 Encke gap 41 mesospheric 41 flips twists 41 Mars Odyssey orbiter 41 cm sec 41 NFIRE 41 Krimigis 41 Ozone O3 41 geysers erupting 41 VIRTIS 41 fission reactions 41 spacecraft flyby 41 comet Boethin 41 GSLV D3 rocket 41 MARSIS radar 41 unearthly glow 41 photon energies 41 magnetic dipole 41 YORP effect 41 gimbals 41 Saturn outermost moon 41 ionized molecules 41 linearly polarized 41 HL Tau 41 moon Io 41 Kepler 9c 41 geomagnetic activity 41 wavelengths 41 radar altimeter 41 Sonic booms 41 extraterrestrial UFOs 41 heavier payloads 41 Proxima Centauri 41 moondust 41 magnetic fields 41 supersonic speeds 41 Cassini Huygens spacecraft 41 NGC #A 41 moon Deimos 41 airspeed indicator 41 velocities 41 Rydberg atom 41 soundlessly 41 neighboring Andromeda galaxy 41 SBSS satellite 41 Uninhabited Aerial Vehicle 41 Rosetta spacecraft 41 UAVSAR 41 Orbiter MRO 41 Infrared Mapping Spectrometer VIMS 41 Orionids 41 cosmic gamma rays 41 superstrings 41 Solar flares 41 Lunar Prospector 41 kph updraft winds 41 unmanned Progress 41 gravitational wobbles 41 sulphate aerosols 41 Saturn moon 41 emits photon 41 ultraviolet photons 41 thermal gradients 41 Supernova #A 41 Ringed Planet 41 velocity dispersion 41 supersonic speed 41 Substorms 41 Nasa Mars Odyssey 41 MayorEmanuel sneaked 41 gaseous planet 41 water vapor condenses 41 spectral radiance 41 polar orbiting satellites 41 DISR 41 pulses 41 glissandi 41 photon absorption 41 interferometers 41 subsonic 41 blazars 41 GLAST telescope 41 gravity warps 41 emitting gamma rays 41 thunder rumbles 41 Neptune Uranus 41 water vapor 41 Pegasus XL 41 constellation Pisces 41 Superheated 41 infrasonic 41 Ocean Salinity 41 superhot gases 41 sine curve 41 proton collisions 41 IR wavelengths 41 Cloudiness 41 Sojourner rover 41 terahertz radiation 41 radar interferometry 41 Exhaling 41 radiosonde 41 Type Ia supernova 41 SpaceX Dragon capsule 41 Imaging Spectroradiometer MODIS instrument 41 rotational symmetry 41 protons 41 Neukum 41 whooshing sounds 41 subatomic 41 clouds scud 41 laser beams 41 solar radii 41 Samuel Oschin Telescope 41 #km h #mph [002] 41 thermally induced 41 vorticity 41 ESA Huygens probe 41 X ray Telescope XRT 40 SINFONI 40 prograde 40 orbiting gamma ray 40 interstellar dust grains 40 horseshoe shaped crater 40 spectroscopic analysis 40 tremolos 40 Bernoulli Principle 40 comet chaser 40 Martian lander 40 ESA Cluster 40 lightspeed 40 Mpc 40 Neutrons 40 Hot Jupiters 40 Jupiter Ganymede 40 Saturn Enceladus 40 Cepheids 40 Titan flyby 40 planet gravitational tug 40 Perseus cluster 40 x ray scattering 40 ephemeris 40 Kounotori2 40 WISE mapped 40 seawards 40 keV 40 electromagnetic frequencies 40 GJ#b 40 galactic cosmic ray 40 geomagnetic substorms 40 Kuiper belt objects 40 harmonic tremors 40 wavelength infrared 40 #:# GMT 40 runway centerline 40 lenticular clouds 40 dephasing 40 microvolts 40 pions 40 vaporises 40 thermal inertia 40 phosphor coated screen 40 anticyclonic 40 Eagle lunar lander 40 situ measurements 40 oxygen ions 40 curved mirrors 40 atmospheric reentry 40 NASA Voyager spacecraft 40 electron orbits 40 SOHO spacecraft 40 capsule parachutes 40 photon flux 40 orbiting Hubble Space Telescope 40 airborne observatory 40 ionised 40 Mercury magnetosphere 40 crewed spacecraft 40 comet Churyumov Gerasimenko 40 planet HD #b 40 Ring Nebula 40 scramjets 40 retrorocket 40 orbiting observatories 40 Muchachos Observatory 40 solar flares 40 Lyman alpha 40 electron neutrinos 40 Wolszczan 40 whirs 40 energetic gamma rays 40 ion thruster 40 photon pairs 40 frequency harmonics 40 Comet #P 40 rocketing skyward 40 supersonic combustion ramjet 40 synth washes 40 kickdown 40 concentrating photovoltaics CPV 40 cymbal crashes 40 deorbit 40 RX J# 40 distant quasar 40 MeV 40 neutrinos 40 diffuse aurora 40 oxidized mercury 40 Mossbauer spectrometer 40 mesocyclone 40 CALIPSO 40 greenish glow 40 probe Chang'e 40 Orion nebula 40 Nasa Mars Reconnaissance 40 Mars orbiting spacecraft 40 faint wisps 40 Cygnus Lyra region 40 airfoil shaped 40 sunlight 40 superheated gases surrounding 40 diffraction patterns 40 Titan smoggy 40 RoboSwift 40 SSMEs 40 Mewaldt 40 Vertical wind shear 40 speedometer needle 40 constellation Eridanus 40 microquasar 40 thunderclouds 40 ions 40 Great Conveyor Belt 40 thunks 40 Jonathan Lunine 40 ionospheric 40 circular orbits