Related by context. Frequent words. (Click for all words.) 50 spacewalking astronaut 49 Spacewalking astronauts 47 generating solar arrays 46 Ares IX rocket 46 spacewalk 46 Heidemarie Stefanyshyn Piper 45 orbiting astronauts 45 shuttle thermal tiles 45 Shane Kimbrough 45 Atlantis astronauts 45 interplanetary spacecraft 44 rotary joint 44 shuttle payload bay 44 Spacewalkers 44 truss segment unfurled 44 Discovery liftoff 44 Mike Suffredini 44 undocking 44 6 #/#-hour spacewalk 44 Soyuz capsule carrying 43 asteroid Itokawa 43 solar arrays 43 pressurized compartment 43 orbiting outpost 43 spacewalks 43 shuttle Discovery 43 spacewalker 42 orbiting shuttle 42 Endeavour astronauts 42 aboard Endeavour 42 International Space Station 42 particle physics detector 42 micrometeorites 42 Space shuttle Atlantis 42 Solar Dynamics 41 Oleg Kononenko 41 clean 41 metal shavings 41 Ariane rocket 41 orbiting observatory 41 Gorie 41 Discovery STS 41 spacewalking astronauts 41 Shuttle Discovery 41 Space shuttle Discovery 41 Shuttle astronauts 41 space shuttle Discovery 41 Rick Mastracchio 41 Parazynski 41 orbiting complex 41 giant shears 41 Shenzhou VII 41 Shuttle Endeavour 41 micrometeorite damage 40 Discovery payload bay 40 resupply mission 40 Kepler telescope 40 commander Peggy Whitson 40 Orbiting Carbon Observatory 40 Robert Behnken 40 LCROSS mission 40 orbit 40 Russian Gennady Padalka 40 sweep 40 shuttle Endeavour 40 liftoff 40 orbiting laboratory 40 dockings 40 space shuttle Endeavour 40 Commander Peggy Whitson 40 David Leckrone 40 orbit insertion 40 shuttle underside 39 payload bay doors 39 agency Roskosmos 39 New Horizons spacecraft 39 Frank De Winne 39 predawn raid 39 NASA 39 ammonia coolant 39 space shuttle Atlantis 39 Gerstenmaier 39 Greg Chamitoff 39 particle collisions 39 NASA spaceport 39 orbiting 39 Space Shuttle Atlantis 39 Two spacewalking astronauts 39 Alexander Kaleri 39 Space Shuttle Endeavour 39 field Infrared Survey 39 meteoroid 39 particle physics experiment 39 GSLV D3 39 truss segment 38 Baikonur Kazakhstan 38 unmanned lunar 38 spacecraft 38 spacewalking 38 lunar exploration 38 particle detector