Related by context. Frequent words. (Click for all words.) 71 Orion Crew 66 J 2X 64 Ares V 64 Orion spacecraft 64 Crew Exploration 63 Launch Vehicle 62 Ares 62 Orion capsule 60 Ares IX 60 SpaceX Falcon 9 60 CH #K 60 Evolved Expendable Launch Vehicle 59 Ares rocket 58 EELV 58 Centaur upper 57 Orbital Space 57 GOES R 57 Dragon spacecraft 57 Ares IX rocket 55 Taurus XL rocket 55 Wideband Global 55 Space Shuttle Program 55 MetOp 55 Iridium NEXT 55 lunar lander 55 spaceplane 55 Advanced Extremely 54 GSLV D3 54 AEHF 54 Atlas V 54 External Tank 54 unpiloted 54 NASAs 54 Space Shuttle 54 PSLV C# 54 payload fairing 54 Payload 54 Unmanned Aircraft System 54 NASA Authorization 54 CubeSat 54 liquid propellant 54 Proton Breeze M 53 Based Infrared 53 spacecraft 53 TacSat 53 Ares rockets 53 SRBs 53 LRIP 53 Discovery STS 53 JCSAT 53 Littoral Combat Ship LCS 53 MUOS 53 RSC Energia 52 CEV 52 nanosatellite 52 CALIPSO 52 SSME 52 Automated Transfer Vehicle 52 Lunar Module 52 P 8A Poseidon 52 NPOESS 52 Airborne Laser 52 Lunar Lander 52 Unmanned Aerial Vehicle 52 ExoMars 52 orbiter 51 NASA Space Shuttle 51 Mission Directorate 51 Dragon capsule 51 Orbiter 51 CLV 51 based Midcourse Defense 51 JWST 51 Geosynchronous Satellite Launch Vehicle 51 P 8A 51 Webb Telescope 51 GOCE 51 vertical takeoff 51 payload 51 OBSS 51 EA 6B 51 STOVL 51 ion propulsion 51 reusable spacecraft 50 TSAT 50 JPL manages 50 RS #A 50 Orbital Sciences 50 Flight Readiness 50 Satellite Launch 50 Systems Mission Directorate 50 Heavy Lift 50 KSLV 1 50 Geostationary Operational Environmental 50 Ariane 5 50 Soyuz 50 payloads 50 PSLV 50 solid rocket boosters 50 thruster 50 polar orbiting