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(Click for frequent words.) 65 Lunar Reconnaissance Orbiter LRO 64 Cassini Huygens spacecraft 63 ray Space Telescope 63 NASA Cassini spacecraft 63 Cassini Huygens 62 planetary Transits 62 Saturnian system 62 Cassini flyby 61 Fermi telescope 61 spacecraft Cassini 61 Mars Odyssey spacecraft 61 NASA Cassini 61 NASA Lunar Reconnaissance 61 Kepler spacecraft 61 orbiting Mars 61 Convection Rotation 61 Saturn Cassini 60 orbiting observatories 60 Galileo spacecraft 60 HiRISE camera aboard 60 rover Opportunity 60 Comet #P/Churyumov-Gerasimenko 60 Galilean satellites 60 ESA ASI 60 Ranging spacecraft 59 Comet Hartley 59 gaseous planet 59 gamma ray observatory 59 Cassini spacecraft 59 CoRoT satellite 59 Titan flyby 59 NASA Stardust spacecraft 59 Orbiter MRO 59 Explorer WISE 59 visit http:/saturn.jpl.nasa.gov 59 Solar TErrestrial RElations Observatory 59 Reconnaissance Orbiter 59 http:/www.nasa.gov/cassini 59 COROT 59 HiRISE camera 59 Fomalhaut b 59 Orbiter LRO 58 WISE spacecraft 58 Mars Pathfinder lander 58 infrared telescopes 58 NASA Kepler 58 Solar Dynamics Observatory 58 EPOXI spacecraft 58 Rosetta spacecraft 58 #P/Churyumov-Gerasimenko 58 Spitzer Space Telescope 58 Planetary Transits 58 EPOXI mission 58 ESA Huygens probe 58 orbiting spacecraft 58 orbiting 58 MESSENGER spacecraft 58 Mars Reconnaissance Orbiter 58 ESA Rosetta 58 robotic spacecraft 58 Comet Hartley 2 58 Nasa spacecraft 58 Corot 7b 57 Nasa Kepler 57 Infrared Pathfinder Satellite 57 Mini Thermal Emission 57 closest flyby 57 orbit GEO 57 moons orbiting 57 Opportunity rover 57 Churyumov Gerasimenko 57 rocky extrasolar planet 57 WISE infrared 57 New Horizons spacecraft 57 Rosetta orbiter 57 constellation Carina 57 exoplanetary 57 BepiColombo 57 NASA Wilkinson Microwave 57 Kepler 9c 57 Solar Terrestrial Relations 57 THEMIS satellites 57 BLG #Lb 57 NASA MESSENGER spacecraft 57 Cloud Aerosol Lidar 57 NASA EPOXI mission 57 comet Churyumov Gerasimenko 56 ESA Mars 56 innermost planet 56 Epsilon Aurigae 56 http:/saturn.jpl.nasa.gov 56 ringed planet 56 Saturn moons 56 NASA Mars Reconnaissance 56 field Infrared Survey 56 SIRTF 56 Kepler Space Telescope 56 Planck satellite 56 Wilkinson Microwave Anisotropy Probe 56 Herschel Space Telescope 56 WISE telescope 56 Observatory SDO 56 Kepler Mission 56 Cassini 56 Kepler telescope 56 orbiter Cassini 56 NASA rovers 56 Martian crater 56 NASA Kepler spacecraft 56 NASA rovers Spirit 56 Observatory STEREO 56 Messenger spacecraft 56 WMAP satellite 56 Titan flybys 56 Mars rovers Spirit 56 Virgo Cluster 56 CALIPSO 56 spacecraft orbiting 56 moon Mab 56 moon Titan 56 smallest exoplanet 56 Mission SRTM 56 IBEX spacecraft 56 six wheeled rover 56 asteroid Itokawa 56 Saturn moon 56 Kepler Telescope 56 unmanned probes 56 Upsilon Andromedae 55 TanDEM X 55 NASA THEMIS 55 moon Phobos 55 interstellar dust samples 55 planet Uranus 55 SOHO spacecraft 55 Beta Pictoris b 55 infrared telescope 55 Cygnus Lyra region 55 laser altimeter 55 Giovanni Cassini 55 Deep Impact eXtended Investigation 55 Comet Churyumov Gerasimenko 55 Voyager spacecraft 55 APXS 55 twin Voyager spacecraft 55 Planck spacecraft 55 occultations 55 asteroid Vesta 55 comet #P/Churyumov-Gerasimenko 55 STEREO spacecraft 55 NASA Cassini orbiter 55 inhabitable planets 55 Relations Observatory STEREO 55 ESO telescopes 55 MARSIS radar 55 Nasa Mars Reconnaissance 55 distant galaxy 55 NASA twin rovers 55 Opportunity Mars rover 55 Earth asteroid Itokawa 55 Steins asteroid 55 orbiting gamma ray 55 Herschel telescope 55 Mars Odyssey orbiter 55 orbited Jupiter 55 NASA LCROSS 55 Saturnian moon Titan 55 LCROSS spacecraft 55 NASA Interstellar Boundary 55 Fermi Gamma ray 55 Pluto Charon 55 Global Surveyor 55 SIM PlanetQuest 55 XMM Newton 55 sister rover Spirit 55 Lunar CRater Observation 55 SMOS Soil Moisture 55 orbital rendezvous 54 ExoMars rover 54 Antenna LISA 54 constellation Eridanus 54 Sojourner Rover 54 infrared observatory 54 Evolution Explorer 54 NASA twin STEREO 54 Ranging MESSENGER spacecraft 54 Reflection Radiometer 54 Syrtis Major 54 NASA Fermi Gamma 54 Butterfly Nebula 54 rover Sojourner 54 NASA Voyager spacecraft 54 slender crescent 54 NASA ICESat 54 Chilean Atacama Desert 54 Space Infrared Telescope 54 Samuel Oschin Telescope 54 retrograde orbit 54 Galaxy Evolution 54 Aqua satellite 54 Advanced Synthetic Aperture 54 NASAs 54 moon Io 54 Saturn moon Enceladus 54 Cassini orbiter 54 Earthlike planets 54 Keck telescope 54 Charon Pluto 54 comet chaser 54 Mars Orbiter Camera 54 constellation Cassiopeia 54 planets orbiting sun 54 Venusian surface 54 Jupiter moon Io 54 KAGUYA 54 Cassini Huygens Mission 54 Heliospheric Observatory SOHO 54 Infrared Array Camera 54 Mars moon Phobos 54 Mars Opportunity rover 54 HiRISE image 54 Thermal Emission Spectrometer 54 ESA Integral 54 NASA STEREO 54 retroreflector 54 galaxy NGC 54 robotic explorer 54 Jupiter Ganymede 54 Comet Holmes 54 Mercury flyby 54 exoplanets orbiting 54 ESA SMART 54 Cassini Equinox 54 highly elliptical orbit 54 Interstellar Boundary Explorer 54 Ocean Salinity 54 piggybacked Huygens probe 54 Gliese #c 54 bedrock outcropping 54 asteroids orbiting 54 cosmic cannibal 54 THEMIS 54 MARSIS 54 rovers Spirit 54 ESA Planck 54 Galilean moons 54 NASA Far Ultraviolet 54 spacecraft Chandrayaan 1 54 High Resolution Imaging 54 Oort Cloud 54 planets Uranus 53 ExoMars Trace Gas 53 WISE mapped 53 Enceladus flybys 53 exo planet 53 Gusev crater 53 GOCE satellite 53 extrasolar planet 53 Keck Interferometer 53 orbiting Hubble Space Telescope 53 NASA Lunar Crater 53 Orion Nebula 53 DISR 53 twin rovers Spirit 53 Mars Reconnaissance Orbiter MRO 53 Envisat satellite 53 Jupiter Icy Moons 53 telescope 53 moon Enceladus 53 NEOSSat 53 Nasa Mars Odyssey 53 Io Europa 53 Mars Phobos 53 Orion nebula 53 Huygens probe 53 robotic rovers 53 TrES 4 53 Stardust spacecraft 53 remote sensing satellite Resourcesat 53 Comet Lulin 53 orbiting observatory 53 entered lunar orbit 53 asteroid Steins 53 Epsilon Eridani 53 constellation Sagittarius 53 SN #A 53 NASA Lunar Prospector 53 moons Phobos 53 ESA XMM Newton 53 Atlantis undocks 53 Emily Lakdawalla 53 THEMIS mission 53 smallest exoplanets 53 spacecraft flyby 53 Moderate Resolution Imaging 53 Fornax cluster 53 NASA Mars rover 53 NASA Chandra 53 Kepler observatory 53 Curiosity rover 53 Martian rovers 53 Titan Saturn 53 Huygens descent 53 Jupiter moons 53 NASA Great Observatories 53 rover Spirit landed 53 asteroid Eros 53 ENVISAT 53 Hinode 53 Viking Orbiter 53 Cosmic Background Explorer 53 Yinghuo 1 53 telescope atop Mauna 53 Elenin 53 VIRTIS 53 brightest supernova 53 Phoebe orbits 53 Isidis Planitia 53 Spacewatch 53 Kuiper belt 53 Space Telescope 53 ICESat 53 comet Wild 53 Rosetta comet chaser 53 imaging spectrometer 53 Jonathan Lunine 53 Herschel Space 53 solar corona 53 outer planets 53 Landsat satellite 53 moon Charon 53 Ulysses spacecraft 53 Foton M3 53 lunar orbiters 53 transiting exoplanet 53 Anisotropy Probe WMAP 53 hexagonal mirrors 53 whiz harmlessly 52 Cosmic Microwave Background 52 orbiting Kepler telescope 52 waning gibbous 52 asteroid Lutetia 52 Coma Cluster 52 Landsat satellites 52 filamentary structure 52 Sensing Satellite LCROSS 52 Martian rover 52 Express orbiter 52 Saturnian 52 Meridiani plains 52 Cassini flybys 52 spiral galaxy NGC 52 asteroids Ceres 52 stationary lander 52 Mars Color Imager 52 NASA Gamma ray 52 irregularly shaped asteroid 52 rover Spirit 52 star Fomalhaut 52 NASA Kepler telescope 52 Laser Interferometer Gravitational Wave 52 geyser plumes 52 Ringed Planet 52 NEAR Shoemaker 52 MetOp 52 polar orbiting satellites 52 icy moons 52 polar vortex 52 Climate Experiment GRACE 52 Shuttle Atlantis blasts 52 galaxy cluster 52 inch Samuel Oschin 52 comet Lulin 52 Triangulum Galaxy 52 constellations Cygnus 52 lander 52 GRB #B 52 Greenbelt Md. manages 52 Mars Odyssey 52 Rosetta lander 52 X ray observatory 52 constellation Hercules 52 Muchachos Observatory 52 Keck telescopes 52 Terrestrial Planet Finder 52 Lunokhod 52 SMOS 52 martian 52 Burst Alert 52 orbital resonance 52 HIRES spectrometer 52 thrilling stargazers 52 astronomical telescope 52 Mars orbiting spacecraft 52 Andromeda Galaxy 52 constellation Virgo 52 HiRISE 52 CoRoT 9b 52 Martian landscape 52 orbiting telescope 52 radio occultation 52 Ocean Salinity SMOS 52 Facility SIRTF 52 Zeta Ophiuchi 52 ESA ERS 52 Martian arctic 52 ESA Herschel 52 PSR J# 52 Cassini Huygens mission 52 Wilkinson Microwave Probe 52 Jupiter moons Europa 52 Kuiper Belt object 52 zodiacal light 52 IceCube 52 Saturnian moon 52 EPOXI 52 moonlet 52 thin crescent 52 Today waxing Virgo 52 flyby spacecraft 52 binary quasar 52 Composite Infrared Spectrometer 52 OSIRIS REx 52 LRO spacecraft 52 Saturn Enceladus 52 Viking orbiters 52 Descent Imager Spectral Radiometer 52 comets orbiting 52 substorm 52 HARPS spectrograph 52 NASA rover Spirit 52 Spectrograph 52 Kuiper Belt Objects 52 Keck Telescope 52 MESSENGER 52 Huygens lander 52 HD#b 52 Envisat Advanced Synthetic Aperture 52 mu Arae 52 GLAST 52 Earth magnetotail 52 Gamma ray Large 52 Context Camera 52 noctilucent clouds 52 journal Meteoritics 52 Helios 2B 52 detect gravitational waves 52 gravitational microlensing 52 twin rover Opportunity 52 Space Telescope GLAST 52 planets orbits 52 Phobos Grunt 52 EPOCh 52 Interior Laboratory GRAIL 52 Martian orbit 52 sunlike star 52 spacecraft orbited 52 Comet Hale Bopp 52 comet Boethin 52 JIMO 51 Bug Nebula 51 GALEX 51 THEMIS spacecraft 51 X ray Telescope XRT 51 constellation Centaurus 51 Mars orbiter 51 STSS Demo 51 Jovian moons 51 HD #b [002] 51 CoRoT 51 Planck telescope 51 Stardust NExT 51 reconnaissance orbiter 51 moons orbiting Saturn 51 ultraviolet imaging spectrograph 51 GLAST telescope 51 ATV Johannes Kepler 51 Ultraviolet Imaging Spectrograph UVIS 51 DIXI 51 amateur astronomers peering 51 flyby 51 Jupiter flyby 51 Hawaii Mauna Kea 51 Mars CRISM 51 Mars Orbiter 51 Epoxi 51 transiting planet 51 RQ# 51 Cometary 51 interplanetary spacecraft 51 Saturn outermost 51 Geminid shower 51 aboard Skylab 51 Shenzhou capsule 51 lunar perigee 51 distant supernovae 51 Hubble observations 51 Martian lander 51 Quadrantid meteor shower 51 CoRoT 7b 51 Shuttle undocks 51 Deep Impact comet 51 constellation Aquarius 51 THEMIS probes 51 comet Hartley 2 51 OGLE TR #b 51 Jupiter Uranus 51 Gliese #g 51 Phobos 51 exoplanets planets 51 COROT 7b 51 jovian 51 X ray Observatory 51 celestial object 51 extrasolar 51 Orionids 51 Science Experiment HiRISE 51 Compton Gamma Ray 51 galaxy M# [001] 51 Flyby spacecraft 51 celestial sphere 51 Mössbauer 51 Red Rectangle 51 Saturnian moons 51 moon permanently shadowed 51 Ontario Lacus 51 STEREO 51 ESO VLT 51 volcanically active 51 Laser Interferometer Space 51 UA Lunar 51 radial velocity method 51 O OREOS 51 Mars orbiters 51 Mauna Kea Hawaii 51 Toutatis 51 Viking landers 51 Submillimeter Array 51 planetoid 51 ESA Envisat 51 WFC3 51 Compact Reconnaissance Imaging Spectrometer 51 planetary missions 51 Lunar Prospector 51 Comet Halley 51 impactor spacecraft 51 NASA Mars Odyssey 51 NEOWISE 51 Lagoon Nebula 51 ah dus 51 Andromeda galaxy 51 COSMO SkyMed 51 GJ #b [001] 51 Philae lander 51 Advanced Spaceborne Thermal Emission 51 Rover Opportunity 51 Uninhabited Aerial Vehicle 51 Canadian Julie Payette 51 spiral galaxy Messier 51 Endeavour undocks 51 Investigation DIXI 51 Comet Boethin 51 constellation Andromeda 51 Perseus Cluster 51 exosolar planets 51 Geminga 51 PASADENA Calif. NASA 51 ESA Huygens 51 NASA ESA Hubble 51 Libra constellation Vogt 51 MUSES C 51 Saturn rings 51 Huygens spacecraft 51 LROC 51 Huygens Probe 51 meter Keck telescopes 51 NASA Spirit rover 51 Infrared Astronomy 51 galaxy M# [002] 51 constellation Draco 51 particle detector 51 Nili Fossae 51 planemos 51 Neutron Spectrometer 51 Chajnantor plateau 51 Opportunity rovers 51 constellation Cetus 51 Solar Dynamics 51 Kiruna Sweden 51 Gliese #d 51 noctilucent 51 Anisotropy Probe 51 LADEE 51 Russian cosmonaut Alexander Kaleri 51 MetOp satellite 51 Radar ASAR 51 manned Shenzhou 51 millisecond pulsar 51 circular orbits 51 Radar ASAR instrument 51 gamma ray observatories 51 Kuiper Belt Object 51 X ray telescopes 51 WD5 51 airglow 51 Upsilon Andromedae b 51 Hubble Space Telescope 51 HM Cancri 51 polar orbits 51 Manned missions 50 telescopic observations 50 constellation Ursa Major 50 extrasolar planetary systems 50 Suzaku X ray 50 LCROSS mission 50 Tau Ceti 50 spacemen Timothy Kopra 50 Martian equator 50 Martian surface 50 spacecraft 50 SPICAM 50 permanently shadowed craters 50 Crab Nebula 50 fissure eruption 50 Mars Gusev Crater 50 Venusian atmosphere 50 comet nucleus 50 planets orbiting distant 50 NASA Opportunity rover 50 Volatile Evolution 50 Uranus Jupiter 50 WASP #b 50 Spitzer Space Telescopes 50 PASADENA Calif. Astronomers 50 moons circling 50 orbits Saturn 50 Telescope BAT 50 Lunar Reconnaissance Orbiter 50 Sojourner rover 50 Helix Nebula 50 Hubble Space Telescope HST 50 DigitalGlobe WorldView 50 hubble 50 CALIPSO satellites 50 satellites orbiting Earth 50 Mars Climate Sounder 50 Kaguya spacecraft 50 RS Ophiuchi 50 exo planets 50 Area Telescope LAT 50 Caltech Palomar Observatory 50 astrophysical phenomena 50 Lunar Crater 50 Neptune Uranus 50 constellation Cygnus 50 dexterous robot 50 NASA Hubble Space 50 SEGUE 50 Saturn outermost ring 50 prograde 50 Trapezium 50 Imaging Spectroradiometer MODIS instrument 50 extrasolar worlds 50 UKIRT 50 Jovian moon 50 LORRI 50 interstellar particles 50 lunar orbiting spacecraft 50 Planetary Fourier Spectrometer PFS 50 SuperWASP 50 barred spiral galaxy 50 GOCE 50 polar craters 50 X ray telescope 50 Array ALMA 50 robotic geologists 50 Eridanus 50 interstellar dust grains 50 NASA CloudSat 50 lunar orbits 50 astronomical observatories 50 MG J# +# 50 NASA Solar Terrestrial 50 PSR B# +# 50 waxing crescent 50 refurbished Hubble Space 50 Comet Tempel 1 50 moonlets 50 occulted 50 Bonneville Crater 50 Giove B 50 orbiter Mars Odyssey 50 Comet #P 50 Krimigis 50 Huygens 50 Arecibo radar 50 Optical Gravitational Lensing Experiment 50 Foton spacecraft 50 HD# [002] 50 HiRISE images 50 sunspot cluster 50 Hayabusa spacecraft 50 robot rovers 50 Hubble Telescope 50 GJ#b 50 polar orbiting 50 waxing gibbous 50 Pancam 50 stellar occultation 50 moons orbiting Pluto 50 heavily cratered 50 Resolution Imaging 50 Kepler #b 50 onboard Chandrayaan 50 lunar crust 50 Rosette Nebula 50 Europa Orbiter 50 astronomers 50 NASA MErcury Surface 50 Pleiades star 50 Comet 9P/Tempel 1 50 observatories 50 planet HD #b 50 planets comets 50 Deep Impact Extended 50 Hale Bopp 50 polarimetry 50 Kuiper belt objects 50 weather satellite TIROS 50 Foton M3 spacecraft 50 Virgo cluster 50 RXTE 50 Jupiter Icy Moons Orbiter 50 subsurface ocean 50 windshield wiper maneuver 50 Apollo missions 50 flybys 50 ESO Very Large Telescope 50 Cancri e 50 Ring Nebula 50 Endeavour docked 50 planets Kepler 50 probe Huygens 50 Huygens mission 50 planetary transits 50 SPHERES 50 outermost planets 50 LCROSS Lunar Crater Observation 50 flyby Cassini 50 waning crescent 50 substorms 50 geo synchronous 50 Horizons spacecraft 49 gravitationally lensed 49 revolutionized astronomy 49 CryoSat mission 49 Saturn equinox 49 Okmok Caldera 49 exosphere 49 Lowell Observatory 49 Viking Lander 49 Gamma ray burst 49 Dynamics Observatory 49 THEMIS Images 49 planet orbits 49 Endurance crater 49 Martian plains 49 gravitational lenses 49 GIOVE B 49 planets circling 49 Sputnik beeped 49 Mission TRMM 49 LRO 49 Oort cloud 49 robotic rover 49 Ionosphere Sounding 49 unmanned lunar orbiter 49 orbiting Chandra 49 geosynchronous 49 cometary 49 Orbiter spacecraft 49 robotic lander 49 lobate scarps 49 Taurids 49 Lunar Reconnaissance Orbiter Camera 49 Space Shuttle Endeavor 49 radial velocity technique 49 Optical Spectroscopic 49 Multi Object Spectrometer 49 Mercury flybys 49 telescopes 49 Space Environment Geochemistry 49 stellar occultations 49 lensing galaxy 49 Gravity Probe B 49 Mars landers 49 particle detectors 49 constellation Scorpius 49 optical telescopes 49 fainter objects 49 Moon Mineralogy Mapper M3 49 Skynet 5C 49 Hayabusa probe 49 Uranus Neptune 49 nanosatellite 49 planets moons 49 Meteosat 49 Heliospheric Observatory 49 elliptical orbits 49 Lunar Orbiter 49 Very Large Telescope 49 Astrosat 49 twin rover Spirit 49 P Churyumov Gerasimenko 49 distant quasar 49 Infrared Mapping Spectrometer VIMS 49 GJ #b [002] 49 lunar module Eagle 49 planetary nebulae 49 NuSTAR 49 plutoids 49 moon Ganymede 49 Hubble 49 IRAS #-# 49 submillimeter wavelength 49 Martian craters 49 unmanned Progress 49 Gravitational lensing 49 moons Io 49 star Gliese 49 auroral displays 49 robotic rover Spirit 49 Solar System 49 Herschel Planck 49 TSN PZ camera 49 Shepherding Spacecraft 49 Stephan Quintet 49 STEREO mission 49 OMEGA instrument 49 Multi Object Spectrograph 49 Mars rover 49 interacting galaxies 49 smoothest flattest spot 49 Extrasolar Planet Observation 49 Itokawa asteroid 49 neutrino telescope 49 Kazakhstan Baikonur Cosmodrome 49 celestial observations 49 Terra Meridiani 49 perigee nearest point 49 Atacama Large Millimeter submillimeter 49 Io Europa Ganymede 49 Envisat satellites 49 comet flyby 49 ESA Envisat satellite 49 NROL 49 Dumbbell Nebula 49 aurorae 49 sized planets orbiting 49 meteoroid impacts 49 Stratospheric Observatory 49 synchronous orbit 49 Mars Pathfinder 49 Kaguya 49 Saturn outermost moon 49 Ofeq 49 BP Psc 49 giant elliptical galaxy 49 Neutral Mass Spectrometer 49 shuttle Discovery undocked 49 geo stationary orbit 49 LIGO 49 Global Surveyor spacecraft 49 smoggy atmosphere 49 Hubble orbits 49 Reflection Radiometer ASTER 49 Panoramic Survey 49 Arecibo telescope 49 highly elliptical orbits 49 Shuttle Radar Topography 49 Moon Mineralogy Mapper 49 starburst galaxy 49 Terra Sirenum 49 comet Hale Bopp 49 twin STEREO spacecraft 49 interstellar boundary 49 stellar nurseries 49 Field Planetary Camera 49 reentry capsule 49 Shuttle Endeavour docks 49 eyepiece #/#s f/#.# 49 ESA GOCE 49 Adam Riess 49 HARPS spectrograph attached 49 optical telescope 49 Philae 49 Tropical Rainfall Measuring 49 Keck Telescopes 49 Shackleton crater 49 SeaWiFS 49 manned spaceships 49 SCISAT 49 Mercury Uranus 49 LINEAR 49 CARTOSAT 49 neutral mass spectrometer 49 protoplanet 49 BBSNews #-#-# NASA 49 X ray observatories 49 extrasolar planets orbiting 49 Diviner instrument 49 NASA Infrared Telescope 49 mineral olivine 49 Comet NEAT 49 Odyssey orbiter 49 submillimetre 49 La Silla Chile 49 Methone 49 comet particles 49 NASA Stratospheric Observatory 49 microlensing 49 gravitational interaction 49 journal Astronomy 49 constellation Taurus 49 hunting Kepler telescope 49 icy moon Enceladus 49 supergiant star 49 POES satellites 49 Mars northern latitudes 49 Telesat Nimiq 49 Astronaut Gregory Chamitoff 49 extrasolar planets 49 martian soil 49 aboard Soyuz TMA 49 trans Neptunian objects 49 AKARI 49 magnetic reconnection 49 Olympus Mons 49 Phoenix Mars Lander 49 Saturn moons Enceladus 49 Kounotori2 49 Fuk Li Mars 49 spacecraft Hayabusa 49 unmanned spacecraft 49 arcminutes 49 SBSS Block 49 MN4 49 orbiting Mars Odyssey 49 Mars rovers Opportunity 49 Stardust capsule 49 Planck observatory 49 Security GMES 49 spinning neutron stars 49 faraway planets 49 AU Mic 49 Mars Surveyor 49 Cosmic Evolution 49 Keck Observatory 49 shuttle Endeavour STS 49 aphelion 49 magnetotail 48 Helioseismic 48 SHARAD 48 Kuiper belt object 48 Neptune Jupiter 48 Infrared Astronomical Satellite 48 QQ# 48 muon neutrino 48 Astronomy buffs 48 entire Milstar constellation 48 lunar landers 48 Saturn moon Mimas 48 Shenzhou VI capsule 48 DEIMOS 48 Hubble telescope 48 Cerro Pachon 48 robotic landers 48 CHIPSat 48 planet Gliese #g 48 Quadrantids 48 e MERLIN 48 Gliese #e 48 Space ENvironment GEochemistry 48 Gusev Crater 48 Lunar Orbiter Laser Altimeter 48 retrograde orbits 48 acronym AMS 48 MErcury Surface Space ENvironment 48 Alpha Particle 48 lunar orbiter Chang'e 48 Milky Way Galaxy 48 Discovery undocked 48 moon Iapetus 48 ecliptic plane 48 OSIRIS Rex 48 foreground galaxy 48 Mars Atmosphere 48 Mars Uranus 48 Thermal Emission Imaging