Related by context. Frequent words. (Click for all words.) 50 Leinbach 47 Dittemore 46 Gerstenmaier 44 orbiter 43 spacecraft 43 director Mike Leinbach 41 Space Shuttle 41 space shuttle 40 Gehman 40 NASA 39 Mission Control 39 microgravity 39 liftoff 39 shuttle missions 39 heat shield 38 Fincke 38 Fossum 38 astronauts 38 thermal tiles 38 orbiters 37 LCROSS 37 payload bay 37 shuttle 37 foam 37 astronaut 37 Orbiter 36 debris 36 space shuttle Discovery 36 space shuttles 36 Space Station 36 NASA Jet Propulsion Laboratory 36 NASA Administrator 36 insulating foam 36 Parazynski 36 STS 35 weightless 35 shuttle Discovery 35 foam insulation 35 Giese 35 crewmates 35 Nasa 35 NASA astronaut 35 Shuttle 35 Chiao 35 Eileen Collins 35 spaceflight 34 zero gravity 34 Space Shuttle Columbia 34 hypersonic 34 Space Shuttle Discovery 34 orbit 34 Feustel 34 spacewalker 34 Whitson 33 Stilson 33 thruster 33 human spaceflight 33 Reisman 33 shuttle astronauts 33 Bolden 33 Kennedy Space 33 ISS 33 Mike Fincke 33 weightlessness 33 spaceship 33 NASA Jet Propulsion 32 thermal blanket 32 spacewalkers 32 Melroy 32 Space Shuttle Atlantis 32 EVA 32 International Space Station 32 landing gear 32 Discovery astronauts 32 orbital 32 Cape Canaveral Fla. 32 JAXA 32 X #A 32 Shuttle Discovery 32 astronauts aboard 32 shuttle Atlantis 32 space shuttle Endeavour 32 nose cone 32 shuttle Endeavour 32 Earth orbit 31 Fister 31 Schlegel 31 Goddard Space Flight 31 SpaceShipOne 31 Soyuz 31 robotic arm 31 SPACE.com 31 Olivas 31 Cassini 31 spacewalk 30 Cape Canaveral Air Force 30 Gagarin 30 lunar landing 30 Space Agency 30 Endeavour 30 radioed