Related by context. Frequent words. (Click for all words.) 58 Discovery liftoff 55 liftoff 51 shuttle Discovery 50 Liftoff 50 nerzog 49 space shuttle Discovery 49 space shuttle Endeavour 49 blastoff 49 congressional recess 48 spacewalk 48 Projected completion 48 By NBC# NBC# 48 shuttle Endeavour 48 Shuttle Launch 47 shuttle disintegrated 47 weeks SailingOne 47 6 #/#-hour spacewalk 47 DellDolly 47 spokesman Allard Beutel 47 flyaway foam 47 Space Shuttle Discovery 47 By trevor 46 Endeavour 46 Commander Peggy Whitson 46 shuttle Atlantis 46 Shuttle Endeavour 46 shuttle missions 46 Oleg Kononenko 45 flyby 45 Space Shuttle Atlantis 45 partial lunar eclipse 45 Shuttle Atlantis 45 Soyuz capsule 44 Shuttle Discovery 44 space shuttle 44 Washington DC ENEWSPF 44 semiannual testimony 44 orbiter 44 Space Shuttle Endeavour 44 tank foam insulation 44 NASA spaceport 44 Lyndin 44 fiery gases 44 shuttle underside 44 comet Hartley 2 44 thermal tile 43 space shuttle Atlantis 43 Japanese astronaut Koichi 43 Confirmation hearings 43 spacewalks 43 total lunar eclipse 43 aboard Endeavour 43 Soviet cosmonaut Yuri Gagarin 43 Hubble servicing 43 Endeavour astronauts 42 International Space Station 42 heat shield 42 Atlantis astronauts 42 Martian arctic 42 undocking 42 insulating foam 42 shuttle thermal tiles 42 aorta surgery 42 shuttle 42 Sturckow 42 Discovery astronauts 42 spacewalking 42 Eyharts 42 monthlong recess 42 Nicole Stott 41 Kepler telescope 41 SpaceX Falcon 9 41 Phoenix Mars lander 41 Oleg Skripochka 41 Bill Gerstenmaier NASA 41 Gerstenmaier 41 Krikalev 41 Space shuttle Discovery 41 shuttle astronauts 41 resistant tiles 41 uncontained engine failure 41 shuttle thermal shielding 41 orbiting laboratory 41 Flight Readiness 41 NASA Mars Odyssey 41 weeklong recess 41 thermal blanket 40 orbiting outpost 40 Caldwell Dyson 40 rover Opportunity 40 Hobaugh 40 Shuttle astronauts 40 Spacewalk 40 Russian Soyuz capsule 40 spacecraft 40 lunar eclipse 40 astronaut Peggy Whitson 40 resupply mission 40 Soyuz rocket 40 Mission Control 40 Russian Soyuz spacecraft