Related by context. Frequent words. (Click for all words.) 51 resistant tiles 50 Space Shuttle Endeavor 50 Discovery astronauts 49 Shuttle astronauts 48 shuttle underside 47 Kenneth Bowersox 47 heat shield 47 shuttle thermal tiles 46 astronauts 46 spacewalking astronaut 46 Astronauts aboard 46 space shuttle 46 aboard 46 liftoff 46 Ares IX rocket 45 space shuttle Discovery 45 Endeavour astronauts 45 shuttle Endeavour 45 Discovery liftoff 45 micrometeorite damage 45 crewmembers aboard 45 orbiting shuttle 45 Lyndin 45 space shuttle Endeavour 44 shuttle Atlantis 44 Atlantis astronauts 44 Russian leased Baikonur 44 crewmates 44 dismasting 44 Piers Sellers 44 Readdy 44 shuttle Discovery 44 spacecraft 44 Heidemarie Stefanyshyn Piper 44 Space Shuttle Discovery 44 shuttle Challenger 44 NASA spaceport 44 Commander Eileen 44 administrator Sean O'Keefe 44 aboard Atlantis 44 commander Dominic Gorie 44 astronauts aboard 43 Ron Garan 43 Endeavour payload bay 43 orbiting complex 43 thermal tile 43 orbit insertion 43 astronaut Paolo Nespoli 43 Shuttle commander 43 NASA Stardust spacecraft 43 International Space Station 43 Endeavour STS 43 Astronauts 43 Hayabusa probe 43 Pad #A 43 shuttle thermal shielding 43 thermal shielding 42 Spacewalking astronauts 42 space shuttle Atlantis 42 crewmen 42 spaceflight participant 42 Drew Feustel 42 spaceship 42 director Tony Ceccacci 42 Endeavour 42 interplanetary spacecraft 42 Roberto Vittori 42 Space shuttle Discovery 42 crewmember 42 Space Shuttle Atlantis 42 shuttle disintegrated 42 Dragon capsule 42 HOUSTON Astronauts 42 orbiter 42 manned spaceship 42 Space shuttle Atlantis 41 Sturckow 41 Launch Pad #B 41 dockings 41 ship docked 41 Frank De Winne 41 orbiting observatory 41 Gene Cernan 41 Japanese astronaut Takao 41 Hokule'a 41 Christa McAuliffe backup 41 astronaut Ilan Ramon 41 Discovery payload bay 41 asteroid Itokawa 41 Elies 41 blastoff 41 Perminov 41 Space Shuttle Endeavour 41 Shenzhou VII 41 spokesman Allard Beutel 40 New Horizons spacecraft 40 Shuttle Endeavour 40 Commander Peggy Whitson 40 Spacewalkers 40 HMS Vanguard 40 Russian Gennady Padalka