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(Click for frequent words.) 70 moon Ganymede 67 sized planets orbiting 67 Europa Ganymede 67 Galilean moons 66 Galilean satellites 66 Io Europa 65 Mercury Uranus 65 moons Europa 64 Mars Neptune Uranus 64 Uranus Jupiter 64 Io Europa Ganymede 63 volcanic moon Io 63 moons Phobos 62 planets Uranus 62 Neptune Jupiter 62 icy moons 62 Mars Jupiter Uranus 62 Jupiter Ganymede 62 moons Io Europa Ganymede 62 Meen Rashi 61 mysterious uncharted 61 subsurface ocean 61 Jovian moon 61 moons circling 61 Venus Uranus 61 Jupiter Uranus 61 gaseous planets 61 Mars Uranus 61 constellation Lyra 61 Venus Jupiter Uranus 61 Jovian moons 61 Saturn moons Enceladus 60 Mars Saturn Uranus 60 Pluto Uranus 60 Saturn Jupiter Uranus 60 Muchachos Observatory 60 Fomalhaut b 60 outer corona 60 Neptune Uranus 60 Venus Neptune Uranus 59 gaseous planet 59 Teatro Lirico d' 58 moons orbiting 58 moon Europa 58 Saturn Uranus Neptune 58 inhabitable planets 58 Neptune Uranus Jupiter 58 constellation Carina 58 constellation Auriga 58 Jupiter moon Io 58 Pleiades star 58 COROT exo 3b 58 Uranus Neptune 57 Europa Orbiter 57 Saturn Enceladus 57 Saturn Neptune Uranus 57 CoRoT #b 57 HD#b 57 moon Io 57 whiz harmlessly 57 Syrtis Major 57 Orion constellation 57 moon Charon 57 Zeta Ophiuchi 57 moon Phobos 57 Mars Uranus Neptune 57 comets orbiting 57 Pleiades cluster 57 Eridanus 57 Upsilon Andromedae b 57 Beta Pictoris b 57 VIRTIS instrument 57 retrograde orbit 57 Jupiter Saturn Uranus 57 constellations Cygnus 57 bedrock outcropping 57 Cygnus Lyra region 57 planets orbits 57 Charon Pluto 57 largest moon Charon 57 telescope Uranus 56 Kepler 9c 56 smoothest flattest spot 56 Teatro Lirico D' 56 spherical halo 56 Corot 7b 56 Ring Nebula 56 Ceres Jupiter 56 star Spica 56 thrilling stargazers 56 Herschel Space 56 constellation Hercules 56 Upsilon Andromedae 56 Trapezium 56 Trojan asteroids 56 waning crescent Moon 56 OGLE TR #b 56 Great Orion Nebula 56 Tarantula Nebula 56 waxing crescent moon 56 Jupiter icy moons 56 constellation Virgo 56 Jupiter moons Europa 56 zodiacal constellation 56 joins rovers Spirit 55 Kuiper belt 55 Saturn magnetosphere 55 Capricornus 55 cosmic cannibal 55 smallest exoplanets 55 Rosette Nebula 55 rocky extrasolar planet 55 constellation Ursa Major 55 Roque de los 55 Omega Centauri 55 IntergalaticEarth 55 planetary embryos 55 Dan Buhl Planetarium 55 thin crescent 55 crescent Moon 55 ASTROLOGICAL TOPICS 55 BettingExpert users 55 Stephan Quintet 55 Mercury Jupiter Uranus 55 BLG #Lb 55 GJ#b 55 constellation Aquila 55 mu Arae 55 frigid arctic plains 55 southern supercontinent 55 Modeen Funeral Home 55 umbral shadow 55 McDonald Aeberli Funeral Home 55 Solar TErrestrial RElations Observatory 55 moon Titan 55 nebulae 55 starlike object 55 constellation Scorpius 55 cometary debris 55 planets circling stars 55 asteroids orbiting 55 Spiral galaxies 54 Caltech manages 54 Geminid shower 54 planetary nebulas 54 Cassini Finds 54 Neutron stars 54 Lightning flickered 54 exosphere 54 Saturnian moon 54 COROT 7b 54 Greenbelt Md. manages 54 constellation Andromeda 54 icy moon Enceladus 54 Ian McShane Pillars 54 Bug Nebula 54 constellation Lacerta 54 interstellar cloud 54 gamma ray observatory 54 Titan Saturn 54 van Arkel discovery 54 stellar nurseries 54 Orion nebula 54 twin Voyager spacecraft 54 Lake Untersee 54 Pluto Charon 54 submillimetre wavelengths 54 Olive ridleys 54 habitable zones 54 planetary Transits 54 chromosphere 54 Surface Composition Spectrometer 54 Phoebe orbits 54 asteroid Vesta 54 galaxy M# [001] 54 choking irritants 54 Noctilucent clouds 54 constellation Pisces 54 proto cluster 54 Dumbbell Nebula 54 giant gaseous planets 54 Jupiter Saturn 54 Quadrantid meteor shower 54 Fornax cluster 54 waning crescent moon 54 Dhanu Rashi 54 retrograde orbits 54 Aquarius adore 54 NASA rovers Spirit 54 Beta Centauri 54 supergiant star 54 constellation Taurus 54 Climate Sounder 54 inner moons 54 Picos de 54 orbits Saturn 53 Samuel Oschin Telescope 53 constellation Eridanus 53 Sagittarius Ketu 53 barred spiral galaxy 53 asterism 53 polar stratospheric 53 SKY WATCH 53 infrared telescopes 53 Ganymede 53 equatorial plains 53 smoothest flattest 53 eccentric orbits 53 occulted 53 Opportunity parachuted 53 exoplanetary 53 MG J# +# 53 galactic clusters 53 lensing galaxy 53 constellation Canis Major 53 planets moons 53 KBOs 53 Arsia Mons 53 Multi Object Spectrograph 53 Arches Cluster 53 constellation Aquarius 53 exo planets 53 Carina Nebula 53 reflection nebula 53 permanently shadowed regions 53 HARPS instrument 53 elongated orbits 53 Kuiper Belt object 53 Astrological lore 53 Fermi telescope 53 Eta Aquarid meteor shower 53 BepiColombo 53 Saturnian moons 53 lunar occultation 53 Libra adore 53 gravitationally bound 53 Kuiper Belt Objects 53 occultations 53 Planetary Transits 53 Infrared Thermal Imaging Spectrometer 53 Canis Major 53 aurorae 53 constellation Gemini 53 Ionosphere Sounding 53 Epsilon Aurigae 53 ionized gas 53 Jupiter moons 53 Saturnian moon Titan 53 rover Spirit landed 53 systems EW suites 53 galaxy NGC# 52 zodiacal dust 52 Aquarius Uranus 52 PASADENA Calif. Astronomers 52 Quaoar 52 comets asteroids 52 THEMIS Image 52 photosphere 52 Tarantula nebula 52 moons orbiting Saturn 52 Earthlike planets 52 Methone 52 asteroids comets 52 Relations Observatory STEREO 52 Cassini flyby 52 geomicrobiology studying particles 52 Convection Rotation 52 comet #P/Churyumov-Gerasimenko 52 noctilucent clouds 52 airglow 52 HL Tau 52 spacecraft Cassini 52 Gliese #G 52 Sturckow eased 52 Valles Marineris 52 Partial lunar eclipse 52 comet Lulin 52 hexagonal mirrors 52 Galileo spacecraft 52 Saturn moons Titan 52 planets orbiting sun 52 rocky planets 52 exosolar planets 52 Venusian atmosphere 52 circumstellar disks 52 moon Mab 52 Terra Meridiani 52 planets comets 52 planemos 52 slender crescent 52 constellation Sagittarius 52 moon Mimas 52 Ontario Lacus 52 discover Fomalhaut 52 Globular clusters 52 Trifid 52 planets orbiting distant 52 visit http:/saturn.jpl.nasa.gov 52 planetary conjunctions 52 Ringed Planet 52 extrasolar 52 red supergiant 52 magnetotail 52 Pluto Eris 52 hydrated minerals 52 smoggy atmosphere 52 comets moons 52 exoplanets orbiting 52 constellation Leo 52 Hellas Basin 52 Saturn outermost 52 Saturn Uranus 52 comet Churyumov Gerasimenko 52 constellation Monoceros 52 volcanically active 52 buckypaper virtually 52 highly magnetized neutron 52 Coma Cluster 52 absorbs photons 52 X ray wavelengths 52 Shepherding Spacecraft 52 CoRoT 9b 52 Titan smoggy 52 waxing gibbous moon 52 Sagittarius adore 52 cratered highlands 52 Candor Chasma 51 Deep Impact eXtended Investigation 51 sunlike star 51 assumed planets circling 51 luminous galaxies 51 galactic halo 51 Palaeozoic sedimentary 51 Serpens Cauda 51 Coma cluster 51 asteroids Vesta 51 Virgo adore 51 Cancri e 51 polygon patterns 51 cosmological distances 51 diffuse aurora 51 spiral galaxies 51 Robotic Exploration 51 Saturn moon Enceladus 51 globulars 51 P/# A2 51 constellation Cassiopeia 51 zodiac constellations 51 planetary nebulae 51 periodic dimming 51 Canis Minor 51 Mathieu Amalric stumbles 51 trans Neptunian objects 51 Noguchi greeting 51 Pisces adore 51 protoplanetary 51 Lunar eclipses 51 protoplanet 51 Cat Paw Nebula 51 Sagittarius B2 51 #P/Churyumov-Gerasimenko 51 Asteroid Belt 51 Comet NEAT 51 Bok globules 51 sunlike stars 51 constellation Cygnus 51 Earth magnetosphere 51 Exoplanets 51 extrasolar worlds 51 HARPS spectrograph attached 51 heavily cratered 51 waning gibbous moon 51 Saturn moons 51 mineral olivine 51 constellation Cetus 51 proto planetary disks 51 Leonid meteor showers 51 seafloor methane 51 Orionids 51 coronal mass ejections CMEs 51 Saturn Cassini 51 Cassini flybys 51 merging galaxies 51 filamentary structure 51 Wide Angle Search 51 planet Gliese #c 51 elliptical polar 51 telescopic observations 51 lightweight synthetic aperture 51 repeated fly bys 51 Corot 9b 51 SN #C 51 protoplanets 51 circumstellar disk 51 Gerhard Schwehm 51 submillimeter galaxies 51 spiral galaxy NGC 51 Kuiper belt objects 51 thin crescent moon 51 constellation Serpens 51 constellation Draco 51 IRAS #-# 51 stellar occultations 51 Spatiales 51 Ultraviolet Imaging Spectrograph UVIS 51 COROT 51 galaxy M# [002] 51 synchronous polar 51 mother Rivarde 51 units binoculars scopes 51 shadowy craters 51 Comet Lulin 51 unaided eye 51 constellation Centaurus 51 YOUR HOROSCOPE 51 Canes Venatici 51 Harvard Smithsonian Astrophysical 51 S/# P2 51 Ionospheric Sounding MARSIS 51 Comet #P 51 supergiant stars 51 galaxy NGC 51 polar craters 51 smallest exoplanet 51 ringed planet 51 JPL manages 51 planet Gliese #g 51 celestial equator 51 VB #b 51 extrasolar planets orbiting 51 Pluto dwarf 50 TrES 4 50 Gravitational waves 50 protoplanetary disks 50 Perseus Cluster 50 polar vortex 50 nebular 50 Saturnian system 50 star Beta Pictoris 50 polar orbits 50 Comet Holmes 50 Extrasolar planets 50 radial velocity technique 50 distant suns 50 Keck Interferometer 50 spiral nebulae 50 planet HD #b 50 Coma Berenices 50 dwarf spheroidal 50 Oort cloud 50 slender crescent moon 50 OMEGA instrument 50 galactic disk 50 Comet Tempel Tuttle 50 outer planets 50 orbital resonance 50 Freighters #-#-# 50 Hubble orbits 50 moon Canup 50 Ranging spacecraft 50 German SAR Lupe 50 orbited Jupiter 50 Arabia Terra 50 PUVA psoralen plus 50 planetary nebula 50 Super Earths 50 Nasa spacecraft 50 Lagoon Nebula 50 Scorpio adore 50 penumbral shadow 50 habitable planets hints 50 Hot Jupiters 50 Olympus Mons 50 ultraviolet wavelengths 50 star Gliese 50 Jonathan Lunine 50 Rosetta spacecraft 50 Comet #P/Churyumov-Gerasimenko 50 Martian equator 50 fainter objects 50 Imaging Spectroradiometer MODIS instrument 50 permanently shadowed craters 50 Kepler observatory 50 PKS #-# 50 Sagittarius dwarf galaxy 50 HD# [002] 50 Quadrantids 50 CoRoT satellite 50 planets orbiting stars 50 Kuiper Belt objects 50 Hubble Captures 50 ionized particles 50 HiRISE camera aboard 50 Martian plains 50 topographical characteristics 50 Planck satellite 50 gravitational microlensing 50 Small Magellanic Cloud 50 Wolf Rayet stars 50 Beta Pictoris 50 celestial sphere 50 sea scorpions 50 Omega Nebula 50 auroral displays 50 basaltic rocks 50 red supergiants 50 eyepiece #/#s f/#.# 50 HD #b [002] 50 Aries adore 50 GLAST Burst Monitor 50 gravity warps 50 Caloris 50 Supernovae 50 EADS Astrium GmbH 50 Orion Nebula 50 icy comets 50 stellar occultation 50 Navy copter crashes 50 Astronomers Find 50 lunar craters 50 supernovae explode 50 Rossby waves 50 Kraken Mare 50 Churyumov Gerasimenko 50 Voorwerp 50 Saturn outermost ring 50 lander rover 50 Inuit goddess 50 Galaxy Evolution 50 planet Uranus 50 Herbig Ae Be 50 manmade caverns inside 50 sextile 50 emission nebula 50 Chandra Observatory 50 Gamma ray bursts 50 TSN PZ camera 50 zodiacal light 50 ArtiGras Fine Arts 50 Comet Machholz 50 Gliese #e 50 spectral fingerprint 50 SMBH 50 NGC #A 49 extrasolar planet 49 Bill Borucki Kepler 49 Rosetta orbiter 49 Today waxing Virgo 49 Saturn moon 49 Earthlike 49 solar corona 49 moons 49 Veil Nebula 49 Atacama Large Millimeter submillimeter 49 ah dus 49 polar mesospheric clouds 49 Descent Imager Spectral Radiometer 49 fireball streaking 49 Virgo cluster 49 Comet Hartley 2 49 Cerro Pachon 49 prograde 49 Gemini constellation 49 Mars moon Phobos 49 nebulosity 49 Small Magellanic Clouds 49 Geminga 49 Mars northern latitudes 49 By TRACY DASH 49 constellation Ara 49 Space Environment Geochemistry 49 blue supergiant 49 Virgo Cluster 49 APXS 49 Hanny Voorwerp 49 Infrared Pathfinder Satellite 49 Makemake 49 1worldspace TM 49 GJ #b [002] 49 exoplanets planets 49 planet orbits 49 rayed crater 49 GQ Lupi 49 ESA XMM Newton 49 N. Rathnasree 49 Valentine Daze 49 Mauna Kea Hawaii 49 planetoids 49 asteroid Ceres 49 Aycock Funeral Home 49 Meteor showers 49 circumstellar 49 HIP #b 49 star Fomalhaut 49 Martian moons Phobos 49 brightest meteors 49 Comet LINEAR 49 orbiting Saturn 49 Manned missions 49 giant elliptical galaxy 49 interplanetary spacecraft 49 MARSIS instrument 49 Beehive Cluster 49 star Proxima Centauri 49 Shuttle Discovery blasts 49 Oort Cloud 49 galactic nuclei 49 dimming starlight 49 Tharsis Rise 49 Comet Churyumov Gerasimenko 49 volcanic crater 49 polarimetry 49 Lake Vostok 49 coronal loops 49 GJ #b [001] 49 massifs 49 zodiacal constellations 49 predawn sky 49 ExoMars Trace Gas 49 moon Enceladus 49 moon Dione 49 NYSE DENT 49 Solar Orbiter 49 XMM Newton observatory 49 Comet Halley 49 Express orbiter 49 constellation Pegasus 49 Steins asteroid 49 sodium atoms 49 icy crust 49 Triangulum 49 constellation Perseus 49 IBEX spacecraft 49 Enceladus flybys 49 celestial object 49 AU Mic 49 spectral fingerprints 49 Neutral Mass Spectrometer 49 permanently shadowed crater 49 Dhanu Rashi Mars 49 X ray binaries 49 distant quasars 49 gibbous 49 Wolszczan 49 ESO Paranal Observatory 49 Cassini Image 49 Iapetus Saturn 49 Kepler Telescope 49 Libra constellation Vogt 49 exo planet 49 highly elliptical orbit 49 accretion disks 49 Orcus Patera 49 Planetary Fourier Spectrometer PFS 49 Chilean Atacama Desert 49 -# degrees centigrade [001] 49 Mount Bosavi 49 inch Samuel Oschin 49 orbit GEO 49 interstellar dust grains 49 Daisetta sits 49 ecliptic plane 49 infrastructures Thales Alenia 49 ESA Rosetta 49 Andromeda galaxy 49 Epimetheus 49 Taurasi Dupree 49 lunar equator 49 circular orbits 49 moons JAXA 49 undersea volcanoes 49 Wolfgang Brandner 49 Comet Elenin 49 SMBHs 49 asteroids Ceres 49 starburst galaxy 49 crocodile infested rainforests 49 nebulas 49 neutral mass spectrometer 49 globular star 49 Taurids 49 Andromeda Galaxy 49 Saturn moon Mimas 49 Reconnaissance Orbiter 49 Carmen Bizet 48 Cloud Aerosol Lidar 48 comet nucleus 48 STEREO spacecraft 48 protostars 48 prominences 48 galactic cores 48 nebula NGC 48 WISE telescope 48 Carina constellation 48 Corona Australis 48 Supergiant 48 Antiope 48 proplyds 48 Perseus constellation 48 tidally locked 48 Helix nebula 48 lunar crust 48 HM Cancri 48 jovian 48 Alghero Sardinia 48 megalithic monument 48 Orionid meteors 48 Solar Terrestrial Relations 48 Manchester Jodrell Bank 48 HD #b [001] 48 NASA twin rovers 48 habitable worlds 48 highly purified botulinum 48 Optical Spectroscopic 48 orbiter Cassini 48 amateur astronomers peering 48 astrophysical phenomena 48 Pinyo Pongjaroen prominent 48 HiRISE image 48 eclipsing binaries 48 elliptical orbits 48 galaxies collide 48 extinct volcanoes 48 celestial objects 48 Hyades 48 transiting planet 48 layered sedimentary rock 48 lanternfish 48 Infrared Array Camera 48 Several jagged rocks 48 WASP #b 48 Mars Phobos 48 flood basalts 48 Garan rode 48 carbonaceous chondrites 48 Butterfly Nebula 48 frozen sunless 48 Lyrid meteor shower 48 Jupiter magnetosphere 48 Taurus Littrow Valley 48 coronal holes 48 tidal bulge 48 Smos 48 terrestrial planets 48 hematite mineral 48 Aries Taurus 48 Ajbadiya Libya 48 extrasolar planetary systems 48 Circinus 48 mineralogical composition 48 properties rheology 48 planets orbiting 48 moon Deimos 48 double helix nebula 48 axial tilt 48 watt bulb illuminated 48 Enceladus 48 #/#-ton truss 48 X ray emission 48 Transient orcas 48 waning crescent 48 Geminid meteors 48 Doradus 48 constellation Bootes 48 magnetosphere 48 volcanic vents 48 Exoplanet 48 planets 48 aphelion 48 ESO VLT 48 carrying GSAT 5P 48 super perigee moon 48 X ray emitting 48 Mud volcanoes 48 dusty disks 48 water vapor condenses 48 TSX VENTURE GEL NZAX 48 AKARI 48 galactic bulge 48 plutoids 48 solar nebula 48 olivine mineral 48 silicate mantle 48 journal Meteoritics 48 elliptical galaxy NGC 48 Horsehead Nebula 48 Nares Strait 48 Kuiper Belt mysterious 48 Delta Cephei 48 magnetospheres 48 celestial bodies 48 innermost planet 48 beautifully retro styled 48 abyssal plain 48 fierce inhospitality 48 Greenhouse gases trap 48 Heliospheric Observatory 48 potentially habitable 48 Solar System 48 NASA twin STEREO 48 Laura Schlessinger shifts 48 E ELT 48 unmanned probes 48 methane hydrates exist 48 Barges traverse 48 wispy clouds 48 Giovanni Cassini 48 glacier carved 48 magnetospheric 48 partners Mnuchin 48 Tru Vue value 48 located atop Mauna 48 foreground galaxy 48 Earth magnetotail 48 planets asteroids 48 coronagraph 48 Spectrograph 48 Proxima Centauri 48 Explorer WISE 48 waxing crescent 48 exoplanet orbiting 48 VIRTIS 48 renowned astrophysics observatory 48 planetary surfaces 48 ancient supercontinent 48 super Earths 48 distant quasar 48 Malcolm Fridlund 48 aspecting 48 Helioseismic 48 galactic mergers 48 village Deerlick 48 SOHO spacecraft 48 aboard Taurus XL 48 interstellar particles 48 Astronomers Discover 48 planets constellations 48 • Jeraldine Saunders 48 submillimeter wavelengths 48 active galactic nucleus 48 Milky Way halo 48 hydrated silica 48 evaporite deposits 48 THEMIS satellites 48 NASA Cassini 48 axions 48 rotational axis 48 HARPS spectrograph 48 Hydrothermal Vents 48 Kerch narrow 48 orbiting Kepler telescope 48 Spitzer Space Telescopes 48 Cassini Equinox 48 Caloris Basin 48 waning gibbous 48 planet transits 48 Infrared Mapping Spectrometer VIMS 48 tholins 48 starquakes 48 VISTA telescope 48 sub glacial lakes 48 Transiting 48 Nikku Madhusudhan 47 WISE spacecraft 47 UKIRT 47 hot Jupiters 47 Huygens lander 47 Endurance crater 47 ESA GOCE 47 gibbous moon 47 Saturn rings 47 Cepheus 47 exoplanet hunter 47 emit X rays 47 Cassini Huygens 47 orbiting telescopes 47 Solar Dynamics Observatory 47 Terrestrial Planet Finder 47 ionized hydrogen 47 Heliospheric Investigation 47 ESO Very Large Telescope 47 interstellar clouds 47 inner asteroid belt 47 Cometary 47 giant elliptical galaxies 47 Type 1a supernovae 47 Neutron Spectrometer 47 cluster NGC 47 astrophysical objects 47 stony meteorites 47 Kuiper Belt Object 47 Wilkinson Microwave Probe 47 Greece Alexandroupolis 47 SINFONI 47 Tunguska asteroid 47 Perseid meteor showers 47 Antennae Galaxies 47 hydrologist Carolyn Driedger 47 guides Auriga Charioteer 47 Red Rectangle 47 galaxies nebulae 47 NASA rover Spirit 47 Triangulum Galaxy 47 Neanderthals Homo neanderthalensis 47 ILS Proton Successfully Launches 47 Lutetia 47 Shuttle Discovery arrives 47 mineralogical mapping 47 sizes measured diagonally 47 particle analyzers 47 Aram Chaos 47 volcanic outcrops 47 active volcanism 47 XMM Newton 47 Corona Borealis 47 Aphrodisias 47 VY Canis Majoris 47 Atlantis undocks 47 dimensional atlas 47 geyser plumes 47 AB Aurigae 47 Mandushev 47 carbonaceous chondrite 47 ARRL AMSAT 47 Seagrape Square 47 moonlet 47 phyllosilicates 47 Orionid Meteor Shower 47 GLAST telescope 47 Tuamotu Archipelago 47 silicate minerals 47 devious traps 47 energetic electrons 47 swirling dust devils 47 albedo reflectivity 47 elliptical galaxy 47 supersonic plumes 47 spacecraft orbited 47 apparitions afflicting 47 Kounotori vehicle 47 infrared ultraviolet 47 Circinus X 1 47 Boeing #HP 47 gravitational interaction 47 moonlets 47 Jupiter Borucki 47 Jimi Hendrix Valleys 47 SuperWASP 47 Specialist Greg Chamitoff 47 galaxy clusters 47 Methane hydrates 47 astronomical objects 47 Active Galactic Nuclei 47 THEMIS Images 47 single celled algae 47 Gliese #c 47 spacecraft flyby 47 optical telescopes 47 ray Space Telescope 47 similar northing 47 Diviner instrument 47 basalt volcanic 47 VLTI 47 Cancri 47 brightest supernova 47 Southern Observatory ESO 47 ionized gases 47 KH #D 47 Mars Atmosphere 47 dwarf spheroidal galaxies 47 Magnetars 47 Curiosity rover 47 elongated orbit 47 Voyager probes 47 NASA STEREO 47 star clusters nebulae 47 planets circling 47 astronomical telescope 47 IRC +# 47 Comet Tempel 1 47 hydrosphere 47 globular clusters 47 synchronous orbit 47 orbits 47 Investigation DIXI 47 Stephane Udry 47 Martian meteorites 47 lava flowed 47 * Jeraldine Saunders 47 filamentary structures 47 promontories 47 perigee nearest point 47 planet magnetosphere 47 Tauri Sb 47 Dwarf Planet 47 Toutatis 47 umbral 47 Konacki 47 Pan STARRS PS1 telescope