Related by context. Frequent words. (Click for all words.) 60 liftoff 58 tank foam insulation 56 insulating foam 56 orbiter 55 heat shield 53 thermal tile 52 LeRoy Cain chairman 52 insulation foam 52 foam insulation 51 spacecraft 51 fiery gases 50 Endeavour belly 50 orbital debris 49 NASA 48 booster rockets 47 shuttle 47 micrometeorites 47 space shuttle 46 impactor 46 Lyndin 46 thermal tiles 46 solid rocket boosters 46 Nasa 46 Readdy 46 unmanned spacecraft 46 space shuttle Discovery 46 nose cone 46 Apophis 46 rocket 45 cryogenic engine 45 thruster 45 shuttle disintegrated 45 foam 45 spokesman Allard Beutel 45 asteroid 45 shuttle thermal shielding 45 shuttle Discovery 44 Space Shuttle Discovery 44 orbiting spacecraft 44 Dittemore 44 gap filler 44 Space Shuttle Endeavour 44 astronauts 44 External Tank 44 rocket booster 44 Ares rocket 44 Ares IX 44 Sriharikota 44 landing gear 44 mechanical malfunction 43 spacewalking astronaut 43 sonic boom 43 grapefruit sized 43 booster rocket 43 Bill Gerstenmaier NASA 43 Israeli warplane 43 thermal shielding 43 JAXA 43 thermal blanket 43 blastoff 43 Itokawa 43 geomagnetic storm 43 rocket boosters 43 Orion spacecraft 43 Mission Control 43 Sturckow 43 space shuttle Atlantis 42 nosecone 42 vertical stabilizer 42 shuttle Atlantis 42 Mission Specialists 42 ice frost ramps 42 rapid decompression 42 undersea quake 42 horizontal stabilizer 42 Cape Canaveral Fla. 42 shuttle Challenger 42 Shuttle Launch 42 rotor blade 42 pilotless aircraft 42 Rick Mastracchio 42 Endeavour astronauts 42 lunar module 42 Soyuz capsule 42 Commander Eileen 42 tail rotor 41 QuikScat 41 hydrazine 41 director Mike Leinbach 41 Discovery payload bay 41 spacewalkers 41 space shuttle Endeavour 41 spacewalker 41 gap fillers 41 orbiting telescope 41 LCROSS 41 Orion capsule 41 lunar orbiter 41 Discovery astronauts 41 missile 41 robotic spacecraft