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(Click for frequent words.) 70 impactor 64 shepherding spacecraft 64 IBEX spacecraft 64 flyby spacecraft 64 Shepherding Spacecraft 64 copper impactor 63 NASA MESSENGER spacecraft 63 Comet 9P/Tempel 1 62 Galileo spacecraft 62 Churyumov Gerasimenko 62 Rosetta orbiter 62 lander rover 62 New Horizons spacecraft 62 infrared observatory 62 LCROSS spacecraft 62 WISE spacecraft 62 robotic explorer 61 asteroid Steins 61 Orbiter LRO 61 Lunar CRater Observation 61 MESSENGER spacecraft 61 interstellar dust particles 61 APXS 60 #P/Churyumov-Gerasimenko 60 NASA Stardust spacecraft 60 comet nucleus 60 Deep Impact probe 60 interstellar particles 60 retroreflector 60 infrared telescope 60 NASA EPOXI mission 60 Sojourner rover 60 Martian rovers 60 Comet Tempel 1 60 X ray spectrometer 60 Yinghuo 1 60 Philae lander 59 ExoMars rover 59 Sensing Satellite LCROSS 59 Solar TErrestrial RElations Observatory 59 copper fortified impactor 59 Mini Thermal Emission 59 Impactor 59 icy comets 59 Ulysses spacecraft 59 Curiosity rover 59 gamma ray observatory 59 Stardust spacecraft 59 Nasa spacecraft 59 comet Tempel 1 59 comet flyby 59 Foton M3 59 Orbiter MRO 59 gaseous planet 59 Comet #P/Churyumov-Gerasimenko 58 airglow 58 Lunar Reconnaissance Orbiter LRO 58 Mars Reconnaissance Orbiter MRO 58 SIRTF 58 Comet Hartley 2 58 Ring Nebula 58 EPOXI spacecraft 58 closest flyby 58 planetary Transits 58 protoplanet 58 Saturnian moon Titan 58 reentry capsule 58 Pluto Charon 58 Centaur rocket 58 Comet Hartley 58 Descent Imager Spectral Radiometer 58 Titan flyby 58 hypergolic 57 galactic disk 57 asteroid 57 comet dust 57 TEGA ovens 57 STEREO spacecraft 57 Nasa Mars Reconnaissance 57 radar altimeter 57 interstellar dust grains 57 comet 57 spacecraft 57 Solar Dynamics Observatory 57 exhaust plume 57 Zeta Ophiuchi 57 Fomalhaut b 57 Kuiper Belt object 57 Mars Pathfinder lander 57 Nasa Deep Impact 57 elongated orbits 57 planet magnetosphere 57 Deep Impact comet 57 ejecta plume 57 GJ #b [002] 57 Stephan Quintet 57 Mars moon Phobos 57 probe Huygens 57 interstellar dust samples 57 Upsilon Andromedae 57 circumstellar 57 equatorial orbit 57 THEMIS satellites 57 moon Io 57 WISE telescope 57 lunar equator 57 Cassini orbiter 56 meteoroid 56 Deep Impact flyby spacecraft 56 hypersonic speeds 56 asteroid Vesta 56 energetic electrons 56 hydroxyl molecules 56 celestial object 56 comet Churyumov Gerasimenko 56 PSLV C6 56 lunar crater 56 HiRISE image 56 circumstellar disk 56 nanosatellite 56 infrared spectrometers 56 hexagonal mirrors 56 orbiter Cassini 56 moon Charon 56 Deep Impact craft 56 drogue parachute 56 LCROSS Lunar Crater Observation 56 Hubble Space telescope 56 INSAT 4CR 56 ejecta blanket 56 volcanic moon Io 56 Messenger spacecraft 56 Mossbauer spectrometer 56 irregularly shaped asteroid 56 AB Aurigae 56 Martian terrain 56 comet #P/Churyumov-Gerasimenko 56 moon Enceladus 56 interplanetary spacecraft 56 geo synchronous 56 ion thrusters 56 Heliospheric Observatory SOHO 56 Nasa Mars Odyssey 56 moonquakes 56 moons Phobos 56 comet particles 56 spiral galaxy Messier 56 Kuiper Belt Objects 56 Observatory SDO 56 PSR J# 55 icy moons 55 Martian orbit 55 gravitational slingshot 55 Voyager probes 55 laser altimeter 55 Saturn outermost ring 55 comet McNaught 55 particle detectors 55 Flyby spacecraft 55 martian soil 55 spacecraft Cassini 55 X ray telescopes 55 NASA twin STEREO 55 NASA Kepler telescope 55 asteroidal 55 Hayabusa spacecraft 55 outermost planets 55 Earth magnetosphere 55 Pegasus XL 55 Jovian moons 55 Fermi telescope 55 Cherenkov radiation 55 EPOXI mission 55 Rosetta lander 55 planets orbits 55 exosphere 55 impactors 55 Foton spacecraft 55 Ranging spacecraft 55 lunar orbits 55 Shoemaker Levy 55 Higgs bosons 55 ultraviolet imaging spectrograph 55 infrared telescopes 55 Virgin Galactic SpaceShipTwo 55 circumstellar disks 55 P Churyumov Gerasimenko 55 Hubble Space Telescope HST 55 gravitational interaction 55 Deep Impact spacecraft 55 NASA THEMIS 55 NFIRE satellite 55 ESA Huygens probe 55 Rosetta spacecraft 55 arcsecond 55 ion collisions 55 Earth asteroid Itokawa 55 Fregat upper stage 55 spiral galaxy NGC 55 sunlike star 55 Cabeus crater 55 LCROSS 55 rover Spirit 55 Jupiter Ganymede 55 Phobos Grunt 55 NASA Cassini spacecraft 55 Planck satellite 55 Explorer WISE 55 Saturn outermost 55 rover panoramic 55 millisecond pulsar 55 asteroid Itokawa 55 Solar Terrestrial Relations 55 rocket nose cone 55 GALEX 55 comet chaser 55 IRAS #-# 55 particle detector 55 Venusian atmosphere 55 # Apophis 55 antiproton 55 Insat 3A 55 LORRI 55 lunar orbiting spacecraft 55 Kepler spacecraft 55 Earth ionosphere 54 ST5 54 spacecraft flyby 54 Upsilon Andromedae b 54 orbiter lander 54 HD#b 54 Arches Cluster 54 Carina constellation 54 Saturn moon Mimas 54 supercooled magnets 54 BLG #Lb 54 Rydberg atom 54 onboard Chandrayaan 54 O OREOS 54 Jupiter magnetosphere 54 spectrographs 54 Gravitational waves 54 electron ion 54 STEREO mission 54 GJ#b 54 exoplanetary 54 cometary dust 54 HiRISE camera 54 ionized gases 54 Lunar Crater Observation 54 photometer 54 rotational axis 54 NASA LCROSS 54 twin Voyager spacecraft 54 Deep Impact eXtended Investigation 54 lunar soil 54 relativistic particles 54 Kepler 9c 54 exoatmospheric kill vehicle 54 WISE infrared 54 SOHO spacecraft 54 geo synchronous transfer 54 DISR 54 Cassini flyby 54 Isidis Planitia 54 Kazakhstan Baikonur Cosmodrome 54 electric ion propulsion 54 asteroids orbiting 54 Evolution Explorer 54 unmanned probes 54 Martian rover 54 impactor probe 54 meteoritic material 54 antineutrinos 54 aeroshell 54 P/# A2 54 LRO spacecraft 54 onrushing comet 54 planetesimals 54 X ray observatory 54 Itokawa asteroid 54 coronal mass ejection 54 Optical Spectroscopic 54 Cartosat 2B 54 Alpha Particle 54 entered lunar orbit 54 EPOCh 54 heatshield 54 filamentary structure 54 ejecta 54 Cartosat 2A 54 parafoil 54 P#/P# truss 54 orbiting observatories 54 jovian 54 ATLAS detector 54 Convection Rotation 54 ionized particles 54 Opportunity rover 54 jagged ridge 54 spacecraft Chandrayaan 1 54 Martian crater 54 SBSS satellite 54 cometary 54 Corot 7b 54 Herschel Space Telescope 54 planetoid 54 moon Phobos 54 Galactic cosmic rays 54 Tempel 1 54 emit X rays 54 comet Wild 54 HL Tau 54 orbiting 54 spectroscopic analysis 54 helium atom 53 Express orbiter 53 moonlets 53 Mars rovers Spirit 53 KAGUYA 53 Phoebe orbits 53 planemos 53 elliptical galaxy NGC 53 galaxy NGC 53 twin STEREO spacecraft 53 ChemCam 53 Huygens lander 53 Venusian surface 53 emits X rays 53 Main Injector Neutrino 53 Virgo Cluster 53 martian atmosphere 53 comets asteroids 53 Cassini Huygens spacecraft 53 THEMIS spacecraft 53 PASADENA Calif. Astronomers 53 galaxy M# [001] 53 backscattered 53 whiz harmlessly 53 Galaxy Evolution 53 planetary nebulas 53 High Resolution Imaging 53 microrobot 53 sundog 53 quasicrystal 53 detect gravitational waves 53 visit http:/saturn.jpl.nasa.gov 53 Japan Kibo laboratory 53 capsule parachutes 53 Planck telescope 53 orbital velocity 53 Aqua satellite 53 eclipsing binary 53 payload 53 INSAT satellite 53 lunar crust 53 magnetic monopole 53 Ray Spectrometer 53 orbital inclination 53 X#B 53 magnetosphere 53 Multi Object Spectrograph 53 Saturn moon Enceladus 53 carbonaceous chondrite 53 ejectable 53 Minotaur rocket 53 gravitational tides 53 Moon Impactor Probe 53 NOAA GOES 53 Thermal Emission Spectrometer 53 Virgin Galactic unveils 53 BepiColombo 53 spectrographic 53 prograde 53 orbiting gamma ray 53 WASP #b 53 GJ #b [001] 53 Resourcesat 2 53 RHESSI 53 protoplanetary 53 Earth magnetotail 53 Jupiter flyby 53 Red Rectangle 53 imaging spectrometer 53 Voyager spacecraft 53 gradiometer 53 Sojourner Rover 53 Ultraviolet Imaging Spectrograph UVIS 53 orbital rendezvous 53 Moon Mineralogy Mapper M3 53 polar vortex 53 cometary debris 53 Imaging Spectrometer 53 Sun synchronous orbit 53 Mars Color Imager 53 circular orbit 53 infall 53 starquakes 53 PSLV rocket 53 satellites orbiting Earth 53 COROT 53 Mossbauer 53 Apophis asteroid 53 Gusev crater 53 CryoSat satellite 53 supergiant star 53 kg payload 53 remote sensing satellite Resourcesat 53 X ray pulses 53 NASA Voyager spacecraft 53 comet tail 53 supernova explosion 53 ecliptic plane 53 accretion disk 53 VIRTIS 53 bedrock outcropping 53 NuSTAR 53 infrared spectrograph 53 Comet Halley 53 Elenin 53 lunar orbiter 53 arcminutes 53 Heterodyne Instrument 53 moon Mab 53 constellation Hercules 53 infrared imager 53 Bug Nebula 53 cometary material 53 APEX telescope 53 aperture telescope 53 Saturnian system 53 trans Neptunian objects 53 Shackleton crater 53 Spectrograph 53 NASA rover Spirit 53 journal Meteoritics 53 orbiting observatory 53 xenon propellant 53 Enceladus flyby 53 distant quasar 53 neutron spectrometer 53 TrES 4 53 Impact Probe MIP 53 binary asteroid 53 olivine mineral 53 Synthetic Aperture Radar 53 hypervelocity 53 Taurus XL rocket 53 CARTOSAT 2A 53 cesium vapor 53 Solar Orbiter 53 VY Canis Majoris 53 Saturn magnetosphere 53 GSLV Mk III 53 Butterfly Nebula 53 Io volcanoes 53 Huygens 53 particle acceleration 53 submillimeter wavelength 53 Kuiper belt objects 53 synchronous orbit 53 slender crescent 53 Atlantis undocks 52 Jupiter Icy Moons 52 SpaceLoft XL rocket 52 Martian dust 52 rover Sojourner 52 Characterization EPOCh 52 comet Boethin 52 stellar occultation 52 subatomic particle 52 orbiter robotic arm 52 sun corona 52 infalling 52 Mercury flyby 52 antiparticle 52 NASA Lunar Reconnaissance 52 RISAT 52 interacting galaxies 52 SIM PlanetQuest 52 Near Infrared Camera 52 highly elliptical orbit 52 helium atoms 52 crater Cabeus 52 Super Kamiokande 52 martian surface 52 microshutters 52 NASA ICESat 52 neutrino detectors 52 Chang'eI 52 giant elliptical galaxy 52 geosynchronous satellite launch 52 smallest exoplanet 52 lander 52 Mars landers 52 Galilean moons 52 detect gamma rays 52 NASA Gamma ray 52 gamma rays emitted 52 H IIB 52 Context Camera 52 ESA ASI 52 Oort Cloud 52 D CIXS 52 protoplanets 52 ESO VLT 52 cosmic ray particles 52 Ocean Salinity SMOS 52 Neutron stars 52 Itokawa 52 magnetotail 52 MESSENGER MErcury Surface 52 probe Chang'e 52 asteroid Lutetia 52 Wolf Rayet star 52 payload fairing 52 NIRSpec 52 Comet Churyumov Gerasimenko 52 NASA Opportunity rover 52 spacecraft Hayabusa 52 Giove B 52 particle smasher 52 rover Opportunity 52 rover robotic arm 52 lensing galaxy 52 shuttlecock shaped capsule 52 neutral mass spectrometer 52 NASA Deep Impact 52 retrograde orbit 52 Cassini Huygens 52 galactic cosmic rays 52 globular cluster M# 52 galaxy M# [002] 52 robotic landers 52 helium nuclei 52 moons orbiting Pluto 52 albedo reflectivity 52 Mars Opportunity rover 52 Tunguska object 52 ammonia coolant tank 52 Stardust capsule 52 geyser plumes 52 propellant tanks 52 elliptical galaxy 52 Planck spacecraft 52 NASA Lunar Prospector 52 ESO telescopes 52 asteroid flyby 52 Epoxi 52 Antennae Galaxies 52 Jules Verne ATV 52 transiting planet 52 lunar surface 52 stony meteorites 52 H2A rocket 52 circular orbits 52 Comet Holmes 52 Moon Mineralogy Mapper 52 clumpy soil 52 substorm 52 RS Ophiuchi 52 MARSIS radar 52 Mössbauer spectrometer 52 COROT 7b 52 asteroids 52 GQ Lupi 52 Rosette Nebula 52 Imaging Spectroradiometer MODIS instrument 52 mothership WhiteKnightTwo 52 asteroids comets 52 constellation Carina 52 SMOS mission 52 geo stationary orbit 52 gamma ray observatories 52 windshield wiper maneuver 52 satellite RISAT 52 GRACE satellites 52 Cassini spacecraft 52 Jupiter moon Io 52 microlens 52 Infrared Pathfinder Satellite 52 PSLV C# 52 Viking landers 52 Mercury magnetosphere 52 coronal loops 52 Mars Pathfinder 52 NEOSSat 52 constellation Aquarius 52 LISA Pathfinder 52 ionized gas 52 magnetic monopoles 52 polarimetry 52 Doppler measurements 52 liquid xenon 52 scramjet engines 52 comet Hartley 2 52 silicon monoxide 52 Trojan asteroids 52 flyby Cassini 52 Uninhabited Aerial Vehicle 52 Deep Impact Extended 52 parabolic antenna 52 Cassini 52 Epsilon Aurigae 52 Shuttle Atlantis blasts 52 spacecraft orbiting 52 constellation Cassiopeia 52 orbited Jupiter 52 S/# [001] 52 Jovian moon 52 dexterous robot 52 MUSES C 52 microquasar 52 electromagnetic flux 52 MetOp 52 NASA Orbiting Carbon 52 Neptune Uranus 52 spectroscope 52 Solid Rocket Boosters 52 Planetary Transits 52 moons orbiting 52 extrasolar 52 outer corona 52 SpaceLoft XL 52 gamma ray spectrometer 52 helium ions 52 Saturn moon Iapetus 52 Mars Odyssey spacecraft 52 CARTOSAT 52 ESA Rosetta 52 lunar explorer 52 Saturn Cassini 52 comet Hale Bopp 52 ESA Mars 52 distant galaxy clusters 52 Giovanni Cassini 52 pressurized module 52 moonlet 52 Interstellar Boundary Explorer 52 NFIRE 52 sodium atoms 52 heliospheric 52 panchromatic camera 52 MSL rover 52 atmospheric reentry 52 CoRoT #b 52 Bose Einstein Condensate 52 Crewmate Tracy Caldwell 51 kaons 51 mineral olivine 51 Muchachos Observatory 51 colloidal crystals 51 CCD camera 51 breathing scramjet engine 51 colliding protons 51 Infrared Array Camera 51 electrons protons 51 highly elliptical orbits 51 Supernova #A 51 Magellanic Stream 51 ringed planet 51 X ray telescope 51 Bessel beam 51 elongated orbit 51 shuttle aft compartment 51 sun synchronous orbit 51 astronomical telescope 51 NEAR Shoemaker 51 CCD detector 51 spectrometers 51 convex lens 51 dipole magnets 51 blazar 51 Epsilon Eridani 51 RY Sagittarii 51 micrometeoroids 51 HiRISE camera aboard 51 Tauri Sb 51 cosmological distances 51 fainter objects 51 ray Space Telescope 51 Titan flybys 51 coronal mass ejections CMEs 51 Aboard Endeavour 51 Mars orbiting spacecraft 51 Ares IX rocket 51 NASA STEREO 51 Voorwerp 51 orbiter 51 Permanent Multipurpose Module PMM 51 Lunar Crater 51 particle physics detector 51 Titan smoggy 51 interstellar dust 51 BP Psc 51 Steins asteroid 51 manned Shenzhou 51 Multi Purpose Logistics Module 51 absorbs photons 51 spacecraft thrusters 51 atomic nuclei 51 transiting exoplanet 51 rocket thrusters 51 HM Cancri 51 particle beam 51 SN #C 51 nebular 51 Charon Pluto 51 orbiting Cassini spacecraft 51 BP Piscium 51 hadrons 51 accretion disks 51 X #A Waverider 51 proplyds 51 ah dus 51 Relations Observatory STEREO 51 geosynchronous transfer orbit 51 Saturnian moon 51 Comet Encke 51 tokamak 51 blue supergiant 51 Mercury Uranus 51 Dumbbell Nebula 51 ESA XMM Newton 51 exoplanets orbiting 51 lunar orbiter Chandrayaan 51 linearly polarized 51 cosmic cannibal 51 axions 51 Japanese Kibo laboratory 51 Orion nebula 51 NASA Cassini 51 V# Sgr 51 toroid 51 airbursts 51 rover Spirit landed 51 NASA CloudSat 51 galactic clusters 51 NASA Cassini orbiter 51 radial velocity technique 51 innermost planet 51 ESA Herschel 51 moons Europa 51 extrasolar planetary 51 hypersonic jet 51 Cloud Aerosol Lidar 51 Skynet 5C 51 Geosynchronous Transfer Orbit GTO 51 planets comets 51 ionize 51 twin rover Opportunity 51 X ray wavelengths 51 comet Tempel Tuttle 51 NGC #A 51 cryo electron microscope 51 Permanent Multipurpose Module 51 orbiting Saturn 51 GSLV D3 rocket 51 Ocean Salinity 51 Saturn outermost moon 51 planet Gliese #g 51 cosmic ray collisions 51 orbiting Kepler telescope 51 magnetic dynamo 51 NASA rovers Spirit 51 #/#-ton truss 51 Gravitational lensing 51 Kuiper Belt Object 51 MG J# +# 51 supersymmetric particles 51 submillimetre 51 icy moon Enceladus 51 comets orbiting 51 basaltic rocks 51 lunar landers 51 orbit GEO 51 Omid Hope 51 moons orbiting Saturn 51 Commander Dmitry Kondratyev 51 gamma ray radiation 51 THEMIS probes 51 neutralinos 51 NASA Far Ultraviolet 51 inner asteroid belt 51 PSR B# 51 Moderate Resolution Imaging 51 Helios Prototype 51 Cassini spacecraft orbiting 51 moon Mimas 51 pions 51 orbital resonance 51 Io Europa 51 coronagraph 51 LCROSS Centaur upper 51 ablator 51 Deep Impact mission 51 infrared spectrometer 51 Helioseismic 51 planets Uranus 51 radar interferometry 51 NASA rovers 51 TanDEM X 51 Shuttle Discovery docks 51 lander Philae 51 Wilkinson Microwave Probe 51 Kounotori2 51 infrared laser beam 51 Soyuz launcher 51 Foton M2 51 cryostat 51 Yarkovsky effect 51 monochromator 51 HB SIA 51 OGLE TR #b 51 carbonaceous chondrites 51 Dynamics Observatory 51 RXTE 51 hydrazine fuel 51 Alpha Magnetic Spectrometer AMS 51 subsurface ocean 51 NASAs 51 martian rocks 51 unmanned Chandrayaan 51 microscopic imager 51 CMB radiation 51 Saturn equinox 51 Pancam 51 interferometric synthetic aperture radar 51 Space ENvironment GEochemistry 51 magma ocean 51 geoneutrinos 51 Shallow Subsurface Radar 51 hadron 51 planetoids 51 Magnetic Imager HMI 51 Ariane rocket 51 martian landscape 51 Minotaur IV rocket 51 ATV Johannes Kepler 51 submillimetre wavelengths 51 Japanese Pressurized Module 51 Mössbauer 51 Type Ic supernova 51 ESA SMART 51 martian 51 constellation Centaurus 51 Scheila 51 OSIRIS REx 51 atomic lattice 50 Horizons spacecraft 50 coronal loop 50 CERN LHC 50 GeneSat 1 50 payload canister 50 Saturnian moons 50 Synthetic Aperture Radar SAR 50 scanning electron microscopes 50 Discovery undocks 50 protoplanetary disk 50 aboard ESA Envisat 50 Uchinoura Space Center 50 HD #b [002] 50 Neutral Mass Spectrometer 50 muon neutrino 50 ESA GOCE 50 Climate Experiment SORCE 50 Infrared Astronomy 50 orbits Saturn 50 neutrino particles 50 thruster firings 50 proton particles 50 STSS Demo 50 spherical particle 50 heliopause 50 twin rover Spirit 50 Benthic Rover 50 ionised gas 50 Titan 4B 50 Infrared Remote 50 crewed spacecraft 50 Phobos 50 six wheeled rover 50 RQ# 50 periodic dimming 50 YU# 50 comet hurtling 50 CERN particle accelerator 50 Martian craters 50 Baptistina 50 evanescent waves 50 Huygens Probe 50 Aquarius SAC 50 protostar 50 constellation Eridanus 50 Orionids 50 asteroid Eros 50 multiband imaging photometer 50 EPOXI 50 Lunar Roving Vehicle 50 Solar Optical Telescope 50 Comet Lulin 50 cryogenically cooled 50 flyby 50 pyrotechnic bolt 50 exo planet 50 robotic rovers 50 pyroelectric 50 particle analyzers 50 Opportunity Mars rover 50 stationary lander 50 dust mote 50 Gliese #c 50 GSLV rocket 50 Infrared Mapping Spectrometer VIMS 50 scramjet engine 50 Investigation DIXI 50 Solar Dynamics 50 Lake Cheko 50 Leonardo Multi Purpose 50 exoplanets planets 50 Beta Pictoris b 50 baryon 50 Composite Infrared Spectrometer 50 Kaguya 50 Epimetheus 50 Submillimeter Array 50 OMS pods 50 multispectral camera 50 ionizes 50 foreground galaxy 50 blazars 50 nanomotors 50 spacecraft orbited 50 Comet Boethin 50 Uranus Jupiter 50 docking compartment 50 NASA QuikScat satellite 50 polarimetric 50 TerraSAR X satellite 50 largest moon Charon 50 fiery reentry 50 antimatter particles 50 NEAs 50 electromagnetic signals 50 ESA Integral 50 planets asteroids 50 collimated 50 Sensing Satellite 50 constellation Cetus 50 hypersonic glider 50 PSLV C# rocket 50 gibbous 50 NASA Lunar Crater 50 Martian equator 50 moon Ganymede 50 Soyuz FG 50 GOCE satellite 50 honeycomb structure 50 X ray emission 50 spherical shell 50 Analyzer TEGA 50 XP# [004] 50 Herschel Space 50 Oceansat 2 50 heliosheath 50 orbiting Hubble Space Telescope 50 plasmasphere 50 Tempel Tuttle 50 Mars rover Opportunity 50 suborbital trajectory 50 Rockot launch 50 Lunar Reconnaissance Orbiter Camera 50 X ray diffraction pattern 50 XO 3b 50 named Simorgh 50 Soyuz spacecraft docked 50 bolometer 50 Observatory STEREO 50 planet HD #b 50 lightweight synthetic aperture 50 Gamma ray burst 50 LightSail 50 COROT exo 3b 50 Science Experiment HiRISE 50 carbonate minerals 50 HD #b [001] 50 Distant galaxies 50 superheated gases surrounding 50 sunspot cluster 50 cosmic microwave radiation 50 unmanned rover 50 Hayabusa probe 50 meteoroids 50 asteroid hurtling 50 breathing supersonic combustion 50 Japan Hayabusa spacecraft 50 NASA Aqua 50 red supergiant 50 Delta Cephei