Related by context. Frequent words. (Click for all words.) 64 LeRoy Cain 55 Gerstenmaier 54 orbiter 52 heat shield 51 Dittemore 49 liftoff 48 NASA 47 spacecraft 47 NASA Jet Propulsion Laboratory 46 shuttle Discovery 46 Suffredini 46 space shuttle 46 shuttle 45 director Mike Leinbach 45 orbital debris 45 space shuttle Discovery 45 shuttle missions 45 Nasa 45 astronauts 44 Endeavour 44 Mars Reconnaissance Orbiter 44 shuttle Atlantis 44 Discovery astronauts 44 Grunsfeld 43 thermal tiles 43 Mark Polansky 43 Hubble Space Telescope 43 Hubble 43 Endeavour astronauts 43 Ares IX 43 NASA Administrator 43 insulating foam 42 shuttle Endeavour 42 space shuttle Endeavour 42 JAXA 42 Jet Propulsion Laboratory 42 Leinbach 42 Mission Control 42 Space Shuttle Discovery 42 Space Shuttle Atlantis 42 LCROSS 42 Kostelnik 42 foam insulation 42 NASA Jet Propulsion 42 thruster 41 lander 41 shuttle astronauts 41 JPL 41 Shuttle Atlantis 41 Shuttle Endeavour 41 Columbia Accident Investigation 41 Rosenker 41 gap filler 41 orbiters 41 Shuttle Discovery 41 Space Shuttle Endeavour 41 LRO 40 spacewalk 40 Sumwalt 40 payload bay 40 space shuttle Atlantis 40 Cassini 39 Parazynski 39 Perminov 39 ISS 39 Orbiter 39 International Space Station 39 Goglia 39 Mars Exploration 39 Space shuttle Discovery 39 aboard Endeavour 39 Space shuttle Atlantis 39 Gehman 38 Atlantis 38 Martian soil 38 Chealander 38 spacewalking astronauts 38 Space Shuttle 38 Cape Canaveral Fla. 38 thermal blanket 38 Rick Husband 38 Chandrayaan 38 spacewalkers 38 rover 38 trainer Stan Conte 38 X #A 38 Fincke 38 John Grunsfeld 38 Atlantis astronauts 37 undock 37 undocking 37 atmospheric gases 37 space shuttles 37 Soyuz capsule 37 spacewalker 37 Soyuz 37 hydrazine 37 Space shuttle Endeavour 37 Applied Physics Laboratory 37 Russian Soyuz capsule 37 Shuttle