Related by context. Frequent words. (Click for all words.) 65 rocket booster 57 liftoff 57 Atlas V 57 booster rocket 57 spacecraft 56 liquid oxygen 55 orbiter 54 propellant 53 truss 51 thrusters 50 liquid hydrogen 50 propellants 49 space shuttle 49 Cape Canaveral Air Force 49 launch pad 48 heat shield 48 space shuttle Discovery 48 Ariane 5 48 Sriharikota 47 payload 47 Cape Canaveral 47 Soyuz 47 shuttle Discovery 47 space shuttle Endeavour 47 Cape Canaveral Fla. 46 shuttle 46 thruster 46 Saturn V 46 spacewalkers 46 Space Shuttle Discovery 45 Kennedy Space 45 orbit 45 insulating foam 45 shuttle Atlantis 45 spacewalk 45 launcher 45 propulsion 45 shuttle Endeavour 45 girder 45 nose cone 44 Baikonur Cosmodrome 44 space shuttle Atlantis 44 trusses 44 Soyuz TMA 44 Space Shuttle 43 Space shuttle Discovery 43 Ares 43 & Whitney Rocketdyne 43 Soyuz capsule 43 spacesuits 43 payloads 43 shuttle fleet 43 LCROSS 43 astronauts 43 Soyuz spacecraft 42 thermal tiles 42 International Space Station 42 solar arrays 42 girders 42 Endeavour 42 Orbiter 42 foam 42 spacewalks 41 warhead 41 Discovery astronauts 41 NASA 41 lander 41 SpaceX 41 STS 41 shuttle missions 41 space shuttles 41 Atlantis astronauts 41 fuselage 41 spaceship 40 orbiting outpost 40 Gerstenmaier 40 Spacecraft 40 shuttle astronauts 40 orbiting 40 Space shuttle Endeavour 40 Dextre 40 Sea Launch 40 rocket 40 takeoff 39 Space Agency 39 ATK 39 subsystems 39 orbiters 39 gyroscope 39 undocking 39 Atlantis 39 SpaceShipTwo 39 undock 39 rockets 39 cryogenic 39 Alliant Techsystems 39 Huygens 39 Earth orbit 39 thermal blanket 38 engines 38 superstructure