Related by context. Frequent words. (Click for all words.) 63 Minotaur IV 60 spacecraft 58 Dragon capsule 58 Discovery STS 58 scramjet engine 58 SRBs 57 turbofan engine 57 payload fairing 56 Soyuz rocket 56 SpaceX Falcon 9 56 spacecrafts 56 Dragon spacecraft 56 rocket motors 56 Ares IX rocket 56 PSLV C# 56 booster rockets 55 solid rocket boosters 55 Proton Breeze M 55 reusable spacecraft 55 deorbit 55 aboard Atlantis 54 Atlas V 54 Stardust spacecraft 54 shuttle orbiter 54 liquid propellant 54 thrusters 54 Centaur upper 54 rocket boosters 54 spaceplane 54 thruster 53 Launch Pad #B 53 ion propulsion 53 Orion spacecraft 53 VSS Enterprise 53 X #A 53 orbiter 53 KSLV 1 53 reboost 53 scramjet 53 space shuttle 53 cryogenic engine 52 External Tank 52 Space Shuttle 52 space shuttle Discovery 52 orbiters 52 Lunar Module 52 propulsion 52 shuttle 52 Ariane rocket 52 solid propellant 52 unpowered 52 hypersonic flight 52 Space Shuttle Discovery 52 STS 51 unpiloted 51 twinjet 51 RS #A 51 gaseous hydrogen 51 GSLV D3 51 Space Shuttle Atlantis 51 rovers Spirit 51 Soyuz 51 Launch Vehicle 51 payload 51 #-# Dreamliner 51 Thruster 51 Shuttle Endeavour 51 lunar module 51 NASA Stardust spacecraft 51 empennage 51 Shuttle astronauts 50 ISS Expedition 50 Dreamlifter 50 ATK Launch Systems 50 Shuttle Atlantis 50 space shuttles 50 Ariane 5 50 Ares IX 50 propellant 50 Orion Crew 50 shuttle Discovery 50 Orion capsule 50 Ron Garan 50 Soyuz spacecraft 50 shuttle Atlantis 50 GOES N 50 orbital module 49 Exploration Vehicle 49 JCSAT 49 APKWS 49 hydraulic pump 49 unpressurized 49 engines 49 payloads 49 Citation Mustang 49 CH #K 49 Orbiter Processing Facility 49 ZA# 49 Automated Transfer Vehicle 49 Shuttle Discovery 49 Mars orbiter