Related by context. Frequent words. (Click for all words.) 69 Polar orbiting Operational 61 NPOESS 60 polar orbiting 59 GOES R 58 Meteorological Satellite 56 Based Infrared 55 Wideband Global 54 Orion spacecraft 53 MetOp 52 AEHF 52 National Airspace System 52 Milstar 51 SBIRS 51 interplanetary spacecraft 51 geosynchronous 51 Geostationary Operational Environmental 51 GOES N 50 Orion Crew 50 Advanced Extremely 50 Exploration Vehicle 50 NASAs 50 Gorgon Stare 50 Observing System 50 Evolved Expendable Launch Vehicle 50 QuikSCAT 49 Polar Lander 49 Mars Climate Orbiter 49 NASA 49 Missile Warning 49 TSAT 49 GPS satellites 49 Ocean Observing 49 deorbit 48 Space Fence 48 STSS 48 Ares rocket 48 JWST 48 EUMETSAT 48 FAA NextGen 48 Orion capsule 48 GOCE 48 MUOS 48 Orbiting Carbon Observatory 48 geostationary 48 radar altimeter 48 satellite constellation 48 Agency JAXA 48 satellites 47 SMOS 47 Systems Mission Directorate 47 CALIPSO 47 spacecraft 47 Resourcesat 2 47 Warfighter Information 47 shuttle orbiter 47 Tropical Rainfall Measuring 47 Earth Observing 47 National Reconnaissance 47 Unmanned Aircraft System 47 TerraSAR X 47 Iridium NEXT 47 Defense THAAD 46 TDRS 46 Hubble servicing 46 lunar lander 46 Comanche helicopter 46 Crew Exploration 46 Joint STARS 46 based Midcourse Defense 46 Ares IX rocket 46 spaceplane 46 orbiting satellites 46 Galileo satellite 45 orbiter 45 KSLV 1 45 Minotaur IV 45 Airborne Laser 45 Mission Directorate 45 C #J transport 45 payload fairing 45 Launch Vehicle 45 hydrazine fuel 45 Automated Transfer Vehicle 45 JTRS 45 NOAA 45 Nunn McCurdy 44 sustainment 44 ocean buoys 44 ESOC 44 flyby spacecraft 44 aboard Atlantis 44 Radio System JTRS 44 Alpha Magnetic Spectrometer 44 NLOS LS 44 Mars Surveyor Operations 44 GEOSS 44 AARGM 44 orbiters 44 ORBIMAGE 44 Automatic Dependent Surveillance 44 Ares I.