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(Click for frequent words.) 70 satellites 65 geostationary satellites 65 orbiting satellites 65 satellites orbiting Earth 64 geostationary orbits 62 geosynchronous satellites 61 infrared telescopes 61 GPS satellites 60 Mars orbiters 59 satellite 59 Mars landers 59 Earth orbiting satellites 59 geosynchronous orbits 59 geo stationary satellites 58 geostationary satellite 58 Nasa spacecraft 58 orbiting telescopes 58 remote sensing satellites 58 Galileo satellites 57 optical telescopes 57 Landsat satellites 57 geostationary communications 57 spacecraft orbiting 57 orbiters 57 orbiting spacecraft 57 Mars Odyssey spacecraft 56 spy satellites 56 polar orbiting satellites 56 orbit GEO 56 geo stationary orbit 56 orbiting 56 reconnaissance satellites 55 LEO satellites 55 NASA Landsat 55 unmanned probes 55 spaceborne 55 geosynchronous 55 Odyssey orbiter 55 THEMIS satellites 55 earth orbiting satellites 55 spacecraft 55 geosynchronous satellite 55 exoplanets planets 55 electromagnetic signals 55 Iridium satellites 55 THEMIS spacecraft 54 Global Positioning Satellites 54 interplanetary spacecraft 54 Skynet 5C 54 aboard ESA Envisat 54 robotic rovers 54 SBSS Block 54 gamma ray detectors 54 micrometeoroids 54 robotic probes 54 orbiting Mars 54 extraterrestrial civilizations 54 observing satellites 54 polar orbiting 53 Envisat satellites 53 GLONASS satellites 53 Martian rovers 53 orbiter Mars Odyssey 53 orbiting Hubble Space Telescope 53 Iridium satellite 53 laser altimeter 53 moons Phobos 53 1worldspace TM 53 planetary Transits 53 KBOs 53 spacecrafts 52 Climate Experiment GRACE 52 meteorological satellites 52 radiosondes 52 GOES satellites 52 Voyager spacecraft 52 Geminga 52 satellite constellation 52 LRO spacecraft 52 Fengyun 1C 52 Voyager probes 52 transiting planets 52 robotic explorers 52 geostationary 52 Mars Odyssey 52 spacecraft orbited 52 interferometric synthetic aperture radar 52 Clementine spacecraft 52 Uninhabited Aerial Vehicle 52 submillimeter wavelength 52 geo synchronous orbit 52 NASA satellites orbiting 52 positioning satellites 52 Ikonos 52 microwave transmitters 52 ALMA antennas 52 satelites 51 orbiter Cassini 51 Fermi telescope 51 radiometers 51 Epsilon Eridani 51 NASA rovers 51 lunar orbiters 51 geo synchronous 51 observatories 51 Earth orbiting spacecraft 51 Global Surveyor 51 Ulysses spacecraft 51 Doppler radars 51 NASA EPOXI mission 51 Samuel Oschin Telescope 51 AERONET 51 Earth objects NEOs 51 Shackleton crater 51 satellite altimeters 51 orbiting observatories 51 Galileo constellation 51 alien civilizations 51 planets orbiting sun 51 IKONOS 51 antennas 51 Skynet 5B 50 radiotelescope 50 reconnaissance orbiter 50 MUOS satellites 50 Michibiki 50 Synthetic Aperture Radar 50 Mars Orbiter Camera 50 O OREOS 50 ROCSAT 2 50 geostationary earth 50 LCROSS spacecraft 50 geosynchronous orbit 50 Mars Pathfinder lander 50 MG J# +# 50 INSAT 4B 50 EPOXI spacecraft 50 LAGEOS 50 QZSS 50 hexagonal mirrors 50 NFIRE 50 Arecibo Observatory 50 infrared telescope 50 geostationary orbit 50 Infrared Pathfinder Satellite 50 Galileo spacecraft 50 synchronous orbit 50 WISE spacecraft 50 brilliant auroras 50 ESA Envisat satellite 50 radar altimetry 50 irregularly shaped asteroid 50 perigee closest 50 Lunar Reconnaissance Orbiter LRO 50 parabolic antennas 50 comets asteroids 50 Cosmic rays 50 Fomalhaut b 50 radars telemetry 50 Mars rovers Spirit 50 retroreflector 50 asteroid Itokawa 50 rovers 50 Saturn Cassini 50 penetrating radar 50 NASA CloudSat 50 NFIRE satellite 50 ESA Planck 49 NASA GeneSat 1 49 infrared ultraviolet 49 ERDAS creates 49 orbits 49 X ray telescopes 49 ROSAT 49 moons orbiting Saturn 49 thermal infrared 49 SES Americom AMC 49 telescopes 49 radars 49 Mini Thermal Emission 49 entire Milstar constellation 49 neutrino detectors 49 inhabitable planets 49 jovian 49 Kuiper belt object 49 Mars Color Imager 49 HiRISE camera 49 infrared spectrometers 49 robotic spacecraft 49 Manned missions 49 TerraSAR X 49 solar radii 49 compass headings 49 Toutatis 49 RapidEye constellation 49 Helios 2B 49 satellite IKONOS 49 Earth Observation EO 49 Solar Terrestrial Relations 49 orbital inclination 49 orbited 49 polar orbits 49 sunlike stars 49 Viking landers 49 Galilean moons 49 orbiting telescope 49 SMOS 49 Planck satellite 49 orbiter 49 Stratellite 49 Tropical Rainfall Measuring 49 GSTB V2 49 Array ALMA 49 Mars rovers 49 Meteosat satellites 49 Convection Rotation 49 synthetic aperture radars 49 Landsat satellite 49 Anisotropy Probe WMAP 49 rovers Spirit 49 WISE infrared 49 Orbiters 49 gravitational keyhole 49 Orbiter MRO 48 GALEX 48 permanently shadowed craters 48 CALIPSO 48 ENVISAT 48 ESA ERS 48 STEREO spacecraft 48 German SAR Lupe 48 Cloud Aerosol Lidar 48 IBEX spacecraft 48 Orbiting 48 tiny meteoroids 48 Mars moon Phobos 48 Intelsat satellites 48 GOSAT 48 robotic telescopes 48 Anik F2 48 Beta Pictoris b 48 hypersonic missiles 48 Global Surveyor spacecraft 48 laser designators 48 highly elliptical orbit 48 Saturnian moon Titan 48 orbital slots 48 telescopic camera 48 NASA ICESat 48 Kuiper belt objects 48 Globalstar constellation 48 situ measurements 48 Keck telescope 48 detect gravitational waves 48 galaxy M# [001] 48 underground encasement 48 airbursts 48 Envisat satellite 48 Hubble Space Telescope HST 48 Solar TErrestrial RElations Observatory 48 OGLE TR #b 48 Huygens descent 48 Cosmic Background Explorer COBE 48 GOCE satellite 48 Upsilon Andromedae b 48 OrbView 3 48 moonquakes 48 asteroids orbiting 48 GEO satellites 48 Ground penetrating radar 48 cosmic microwave radiation 48 Mars Reconnaissance Orbiter MRO 48 NOAA GOES 48 detect gamma rays 48 unmanned spacecraft 48 lightwaves 48 gamma ray spectrometer 48 fainter objects 48 APXS 48 Yahsat 1A 48 star Gliese 48 ionospheric 48 antisatellite weapon 48 Planetary Transits 48 NASA Far Ultraviolet 48 e MERLIN 48 Laura Schlessinger shifts 48 X ray observatories 48 asteroid Eros 48 lunar orbits 48 Cospas Sarsat 48 Synthetic Aperture Radar SAR 48 lidar instrument 48 radio occultation 48 comets orbiting 48 Lunar Reconnaissance Orbiter Camera 48 TDRSS 48 Earth Observation satellites 48 Saturn outermost moon 48 Insat 4B 48 Herschel telescope 48 infrared astronomy 48 Argo floats 48 NAVSTAR Global Positioning System 48 moon Io 48 whiz harmlessly 48 polarimetric 48 exoplanetary 48 XTAR EUR 48 GJ#b 48 telescopic observations 48 WMAP satellite 48 interstellar dust particles 48 astronomical observatories 48 Kepler 9c 48 Cassini Huygens 48 Globalstar satellites 48 discover Fomalhaut 48 orbit spares 48 POES satellites 48 smallest exoplanet 48 Glonass satellites 48 moonlets 48 lander 48 Comet Hartley 48 telescopes astronomers 48 Wilkinson Microwave Probe 48 orbit 48 flyby spacecraft 47 Infrared Astronomical Satellite IRAS 47 Martians invading 47 Cassini Huygens spacecraft 47 apogee farthest point 47 Suzaku X ray 47 Mars orbiting spacecraft 47 lunar equator 47 spectroscopic measurements 47 optical wavelengths 47 orbital velocity 47 radar altimeter 47 Globalstar satellite 47 hydrogen maser 47 Jovian moons 47 NEAs 47 geosynchronous communications 47 TanDEM X 47 Evolution Explorer 47 tropospheric warming 47 Moderate Resolution Imaging 47 TECSAR 47 axial tilt 47 Gadaf spoke 47 interstellar particles 47 Kuiper Belt Objects 47 NASA Mars Odyssey 47 constellation Eridanus 47 seismographs 47 Lunokhod 47 submillimeter wavelengths 47 imaging spectrometer 47 Nasa Kepler 47 C NOFS 47 Sun synchronous orbit 47 orbited Jupiter 47 Mini TES 47 CitySense 47 intrinsic brightness 47 RADARSAT 2 47 Mössbauer 47 NASA rovers Spirit 47 meteoroid 47 planets astronomers 47 NASA Tropical Rainfall 47 SES WORLD SKIES NSS 47 lunar craters 47 SeaWiFS 47 DigitalGlobe WorldView 47 EarthScope 47 COROT 47 protoplanetary 47 distant quasars 47 NASA Odyssey orbiter 47 YU# 47 TecSAR 47 outermost planets 47 thermal emission spectrometer 47 QuikSCAT 47 X ray spectrometer 47 Enceladus flybys 47 Interior Laboratory GRAIL 47 ESO VLT 47 Galaxy 4R 47 NASA Wilkinson Microwave 47 SMOS mission 47 Cassini flyby 47 moons orbiting 47 geo synchronous satellites 47 Planck telescope 47 Cancri e 47 CloudSat 47 Stardust spacecraft 47 Geostationary 47 ecliptic plane 47 polarimetry 47 constellations Cygnus 47 asteroid Steins 47 Martian dust 47 Hubble orbits 47 TerraSAR X satellite 47 Satellite Modems Bandwidth 47 Valles Marineris canyon 47 star Proxima Centauri 47 Elenin 47 remote sensing satellite 47 microscopic imager 47 telescope 47 constellation Centaurus 47 NASA Lunar Prospector 47 HARPS instrument 47 Faulkes Telescope 47 Dan Werthimer 47 asteroids 47 homing beacons 47 Aqua satellite 47 airglow 47 Satellites 47 Space Imaging IKONOS 47 Libra constellation Vogt 47 NASA Cassini 47 radiometer 47 Koreasat 6 47 Apophis 46 QuikScat failed 46 Aerojet propulsion 46 LOFAR 46 VIRTIS 46 Geosynchronous orbit 46 lensing galaxy 46 GLONASS navigation 46 Galactic cosmic rays 46 highly elliptical orbits 46 COSMO SkyMed 46 GPS IIF satellites 46 planets orbiting stars 46 GJ #b [002] 46 occultations 46 durable twin rovers 46 NASA Cassini orbiter 46 electric ion propulsion 46 steerable beam 46 microwave antennas 46 crewed spacecraft 46 satellites orbiting Mars 46 Keck telescopes 46 scatterometer 46 wheeled rovers 46 NROL 46 UHF frequencies 46 Apophis asteroid 46 electro optical sensors 46 Mission TRMM satellite 46 Mars Opportunity rover 46 Glonass K 46 Jodrell Bank 46 intercontinental ballistic missiles 46 Program DMSP 46 Meteorological Satellite 46 terrestrial transmitters 46 sondes 46 CoRoT satellite 46 nanosatellites 46 THEMIS 46 Deep Impact probe 46 C4I systems 46 TRMM satellite 46 elliptical orbits 46 JCSAT 9 46 Arecibo telescope 46 Orbiter LRO 46 HAMSAT 46 planemos 46 Tidbinbilla 46 Galilean satellites 46 infra red imaging 46 Sojourner rover 46 gradiometer 46 Canadarms 46 geosynchronous Earth 46 Cygnus Lyra region 46 arcminutes 46 hyper spectral 46 downlinks 46 STSS Demonstration 46 remotely sensed 46 interstellar boundary 46 GOES O 46 ESA Envisat 46 Earth asteroids NEAs 46 Phoenix Mars lander 46 INSAT satellite 46 Ocean Salinity 46 Intelsat Galaxy 46 INSAT 4CR 46 Shuttle Radar Topography 46 Space Surveillance SBSS 46 HIRES spectrometer 46 orbiting Mars Odyssey 46 Advanced Microwave Scanning 46 Spaceguard Survey 46 NASA THEMIS 46 spectral bands 46 datalinks 46 orbital rendezvous 46 periodic dimming 46 Gliese #d 46 altimetry 46 spacecraft Cassini 46 Observatory SDO 46 Viking Lander 46 transmitters 46 Mission SRTM 46 WGS satellites 46 Martian lander 46 HiRISE camera aboard 46 binary asteroids 46 panchromatic camera 46 Kuiper Belt Object 46 NASA Voyager spacecraft 46 LADEE 46 electro optic sensors 46 cosmological distances 46 KODAK CCD Image Sensors 46 Lovell Telescope 46 CHIPSat 46 BepiColombo 46 dipole antennas 46 astronomical observations 46 Foton spacecraft 46 ESA Proba 46 asteroid Apophis 46 NEOSSat 46 icy comets 46 geosynchronous GEO 46 meteoroids 46 Express orbiter 46 Kepler spacecraft 46 gamma ray observatory 46 Ariane rocket 46 Chang'eI 46 Muchachos Observatory 46 aerosol measurements 46 FORMOSAT 46 Cartosat 2B 46 Rosetta orbiter 46 gravitational microlensing 46 Remote sensing 46 Landsat images 46 shadowed craters 46 transmits signals 46 Cassini orbiter 46 emit electromagnetic radiation 46 Solar flares 46 earthlike planets 46 Russian cosmonauts aboard 46 infra red sensors 46 synthetic aperture radar 46 Relations Observatory STEREO 46 lunar orbiter Chang'e 46 DubaiSat 1 46 lunar meteorites 46 narrowband tactical 46 Surrey Satellite 46 planetary orbits 46 dropsonde 46 Comet Churyumov Gerasimenko 46 Mars Odyssey orbiter 46 lander rover 46 SBSS satellite 46 Fiber optic cables 46 Tunguska asteroid 46 fiber optic gyroscopes 46 millisecond pulsars 46 Sputnik beeped 46 submillimeter 46 orbiting gamma ray 46 Nasa Mars Reconnaissance 46 Eutelsat KA SAT 46 manned spaceships 46 intercontinental ballistic missiles ICBMs 46 Reflection Radiometer 46 NAVSTAR 46 impactors 46 drifting buoys 46 RADARSAT 46 antennae 46 Wilkinson Microwave Anisotropy Probe 46 ocean buoys 46 Satellites GOES 46 OrbView 46 Philae lander 46 DSCS III 46 hypervelocity 46 ionosphere 46 Block IIF 46 lunar surface 46 Saturnian moons 46 GRACE satellites 45 Context Camera 45 cosmic cannibal 45 synthetic aperture 45 Gliese #c 45 millimeter wave frequency 45 Surveillance System STSS 45 hunting Kepler telescope 45 TDRS K 45 celestial sphere 45 Satellite Aided Tracking 45 Mars Lander 45 beachball sized 45 Higgs bosons 45 rover 45 HiRISE image 45 Global Positioning System 45 Chajnantor plateau 45 Vinasat 45 equatorial orbit 45 RISAT 45 GeneSat 45 Saturn moon Mimas 45 microwave radiometers 45 deorbiting 45 lunar module Eagle 45 Alycia Weinberger 45 infrared imagery 45 Lunar Prospector 45 interferometers 45 interstellar distances 45 MTSAT 1R 45 GPS Block IIF 45 lander Philae 45 Phobos Grunt 45 Orbiter spacecraft 45 constellation Cepheus 45 microsatellites 45 Cassini spacecraft 45 X ray observatory 45 radar interferometry 45 Titan flyby 45 ESO Paranal Observatory 45 Spaceguard 45 NIRSpec 45 SSETI Express 45 Impact Probe MIP 45 SMOS Soil Moisture 45 ICBMs 45 ESO telescopes 45 CBERS 2B 45 neutrino particles 45 interferograms 45 MARSIS radar 45 rotational axis 45 remote sensing instruments 45 ST5 45 Omid satellite 45 Deep Impact flyby spacecraft 45 MARSIS 45 Cosmic Origins Spectrograph COS 45 electromagnetic waves 45 Cerro Paranal 45 Ranging spacecraft 45 Lunar Reconnaissance Orbiter 45 zap boulders 45 MN4 45 Starfire Optical Range 45 microwave radiation 45 SkyRouter 45 geo stationary satellite 45 polar orbit 45 extrasolar planets orbiting 45 Inmarsat satellites 45 Metop 45 ADM Aeolus 45 Molczan 45 infrared wavelengths 45 retrograde orbit 45 Milstar satellites 45 Hayabusa probe 45 spectrographs 45 Launched Successfully 45 planet Gliese #g 45 lunar orbiting spacecraft 45 antineutrinos 45 Cartosat 2A 45 Radiation Dose Monitor 45 tow dollies 45 ion thrusters 45 Opportunity rovers 45 STSS Demo 45 Hubble Telescope 45 Venusian surface 45 Upsilon Andromedae 45 Apollo missions 45 C1XS 45 ICBMS 45 luminous galaxies 45 astronomical objects 45 Resourcesat 2 45 Kwangmyongsong 45 NPO Lavochkin 45 telescope orbits 45 ultrasonic sensors 45 towering thunderheads 45 # Apophis 45 Giove B 45 Cryosat 45 radiosonde 45 telemetry instrumentation 45 Simorgh rocket 45 AU Mic 45 #mm Katyusha rockets 45 Shackleton Crater 45 Pancam 45 wavebands 45 UKIRT 45 DMSP satellites 45 ARISSat 45 Climate Experiment 45 astronomical telescopes 45 Radarsat 2 45 HD #b [002] 45 transponders 45 spectral fingerprint 45 Eagle lunar lander 45 Hispasat 1E 45 Geoeye 45 Rosetta spacecraft 45 Fornax cluster 45 meteoritic material 45 Curiosity rover 45 sized planets orbiting 45 unmanned reconnaissance aircraft 45 microshutters 45 exoplanets orbiting 45 Jodrell Bank Observatory 45 RQ# 45 Milstar satellite 45 Viking orbiters 45 SIRTF 45 KamLAND 45 Huygens spacecraft 45 Redu Belgium 45 Proxima Centauri 45 Space Environment Geochemistry 45 Aerial photography 45 celestial bodies 45 twin STEREO spacecraft 45 GIOVE B 45 astrophysical objects 45 Formosat 2 45 moons Europa 45 TU# [002] 45 Infrared Telescope 45 Earth asteroids 45 unmanned spaceplane 45 Extraterrestrial UFOs 45 Meteorological Satellites 45 NASA WMAP 45 six wheeled rover 45 Oceansat 2 45 planets orbits 45 planets circling stars 45 Martian meteorites 45 Thermal Emission Imaging 45 mooncraft 45 atmospheric disturbances 45 Cometary 45 bedrock outcropping 45 Mossbauer spectrometer 45 HiRISE images 45 QuikScat 45 Ranging MESSENGER spacecraft 45 mu Arae 45 orbiting Saturn 45 STSS satellites 45 Arecibo radio 44 Arecibo radar 44 thin crescent 44 exo planets 44 satellite RISAT 44 radial velocity technique 44 ballistic missiles cruise missiles 44 Shenzhou capsule 44 interstellar dust samples 44 twin rover Opportunity 44 galaxy M# [002] 44 masers 44 comet nucleus 44 Laura Grego 44 Huygens lander 44 celestial objects 44 Spitzer infrared 44 http:/www.nasa.gov/cassini 44 Atacama Large Millimeter Array 44 geo synchronous transfer 44 Anik F3 44 Climate Experiment SORCE 44 planet Uranus 44 Seismometers 44 AsiaStar 44 SIM PlanetQuest 44 A# spacecraft 44 extraterrestrial civilization 44 Gusev crater 44 rover Sojourner 44 microwave frequencies 44 robotic explorer 44 EPLRS 44 ray Space Telescope 44 constellation Lacerta 44 geoid 44 NASAs 44 arcseconds 44 fiery reentry 44 Earth orbit LEO 44 Satellite 44 Kepler 9b 44 USArray 44 sensor nodes 44 COSPAS 44 submillimetre 44 Highly Adaptable Satellite 44 THEMIS probes 44 permanently shadowed crater 44 Cosmic ray 44 Shepherding Spacecraft 44 Gamma ray burst 44 MEXSAT 44 D CIXS 44 binary asteroid 44 precise atomic clocks 44 L5 signal 44 NASA MESSENGER spacecraft 44 Intercontinental Ballistic Missiles ICBMs 44 Goonhilly 44 microlensing events 44 Michelson interferometer 44 Auger Observatory 44 Helix Nebula 44 constellation Hercules 44 remote sensing 44 twin rovers 44 ultraviolet imaging spectrograph 44 experimental payloads 44 Advanced Synthetic Aperture 44 satellite INSAT 4CR 44 Mars Squyres 44 starshade 44 Nili Fossae 44 perigee nearest point 44 QQ# 44 robotic landers 44 emergency locator transmitters 44 drones 44 gamma ray telescopes 44 GAGAN 44 Climate Orbiter 44 INSAT 4A 44 Moessbauer 44 LROC 44 Earth orbiting LEO 44 magnetars 44 slender crescent 44 pointings 44 Lunar CRater Observation 44 Very Large Array 44 astrometry 44 Cassini 44 Atlantis undocks 44 lunar soil 44 GSLV rockets 44 telemetry tracking 44 ProtoStar II 44 twin Voyager spacecraft 44 Mars rovers Opportunity 44 CARTOSAT 44 A#AX platform 44 NEOs 44 Geosynchronous Transfer Orbit 44 Milstar II 44 Differential GPS 44 Dual Payload Attach Fitting 44 MESSENGER spacecraft 44 operator Eutelsat 44 SPACEWAY 3 44 mere fly bys 44 Faint Object 44 TrES 4 44 twin rovers Spirit 44 Messenger spacecraft 44 Earthlike planet 44 THAAD radar 44 observatory 44 Reconnaissance Orbiter 44 satcom 44 moonwalkers 44 rover panoramic 44 AfriStar 44 NASA twin rovers 44 STEREO mission 44 Great Observatories 44 ion propulsion engines 44 Telescope Array 44 astronomical telescope 44 magnetospheres 44 GNSS receivers 44 ICO G1 44 mineralogical mapping 44 planetary surfaces 44 interceptors launchers 44 ExoMars rover 44 Martian rover 44 Kwajalein Island 44 Submillimeter Array 44 Constellation Observing 44 deep convective clouds 44 cosmic ray particles 44 unpiloted aircraft 44 atomic clocks 44 frequency VLF 44 Trojan asteroids 44 Thermal Emission Spectrometer 44 Hipparcos 44 hydrostatic equilibrium 44 lunar poles 44 noctilucent clouds 44 XTAR EUR satellite 44 Rodong missile 44 Flyby spacecraft 44 ESA XMM Newton 44 inch Samuel Oschin 44 dexterous robots 44 Eutelsat Communications SA 44 Astra 1L 44 accurate atomic clocks 44 comet Churyumov Gerasimenko 44 parabolic antenna 44 Orientale Basin 44 BFT HC 44 Triangulum Galaxy 44 asteroid 44 reentry capsule 44 Rossby waves 44 Anik F1R 44 biosignatures 44 SCIAMACHY 44 orbital mechanics 44 constellation Aquarius 44 QuickBird satellite 44 ESA SMART 44 QuickBird 44 Phased array 44 Shenzhou spaceships 44 NASA Kepler 44 NASA Cassini spacecraft 44 CBERS 44 orbital radius 44 astrophysical phenomena 44 Shuttle undocks 44 interplanetary probes 44 Oort Cloud 44 microlensing 44 MetOp 44 icy moon Enceladus 44 robotic rover 44 Cerro Pachon 44 Geosynchronous 44 Express AM# 44 sonars 44 GSAT 5P 44 Klinkrad 44 meteorological oceanographic 44 robotic lander 44 orbital 44 Jupiter Ganymede 44 Earthlike planets 44 orbiting observatory 44 NASA Stardust spacecraft 44 gaseous planet 44 extrasolar 44 N. Rathnasree 44 martian 44 New Horizons spacecraft 44 waning gibbous 44 telemeter 44 ORBIMAGE 44 protons collide 44 Epsilon Aurigae 44 AB Aurigae 44 Yinghuo 1