Related by context. Frequent words. (Click for all words.) 64 Lunar Reconnaissance Orbiter LRO 60 JPL manages 59 Terrestrial Planet Finder 58 NASAs 57 OSIRIS REx 57 planetary missions 57 moon Europa 56 MetOp 56 NASA Kepler 56 Galileo spacecraft 56 asteroid Vesta 55 NASA rovers 55 interplanetary spacecraft 55 Stratospheric Observatory 54 SIRTF 54 highly elliptical orbit 54 robotic spacecraft 54 unmanned lunar 54 VIRTIS 54 New Horizons spacecraft 53 COSMO SkyMed 53 Cryosat 53 COROT 53 SMOS 53 Resourcesat 2 53 Kepler spacecraft 53 EPOXI 53 Stardust spacecraft 53 spacecraft orbiting 53 NASA Cassini 53 nanosatellite 52 ExoMars 52 Security GMES 52 GOES O 52 Oceansat 2 52 Mars orbiter 52 GIOVE B 52 polar orbiting satellites 52 polar orbiting 52 Astrobotic 52 twin rover Opportunity 52 Crew Launch Vehicle 52 Lunar Exploration 52 Cassini Huygens 52 PSLV C# 52 robotic explorers 51 Vehicle CEV 51 Cartosat 2B 51 Stardust NExT 51 Chang'eI 51 JWST 51 geosynchronous 51 field Infrared Survey 51 Minotaur IV 51 Iridium NEXT 51 interplanetary missions 51 OSIRIS 51 robotic rover 51 NASA Stardust spacecraft 51 Orion Crew 51 orbiting Hubble Space Telescope 51 Lunar Reconnaissance Orbiter 51 laser altimeter 51 Science Experiment HiRISE 51 Aycock Funeral Home 51 spacecraft 51 polar orbits 50 Chandrayan 50 moon Charon 50 flyby spacecraft 50 Hubble servicing 50 GOCE 50 Flyby 50 Horizons spacecraft 50 Exploration Vehicle 50 Launch Vehicle 50 Mauna Kea Hawaii 50 NASA Deep Impact 50 coronagraph 50 planetary exploration 50 astronomical telescope 50 MESSENGER spacecraft 50 orbiting telescope 50 orbiting 50 infrared telescopes 50 orbiting Saturn 50 Voyager spacecraft 50 WFPC2 50 Exoplanet 50 robotic rovers 50 Wilkinson Microwave Anisotropy Probe 49 orbiting Mars 49 XMM Newton 49 Resourcesat 49 NASA Spacecraft 49 Jupiter Saturn 49 geostationary 49 Mars Pathfinder 49 spaceplane 49 ferrying astronauts 49 National d' Etudes