Related by context. Frequent words. (Click for all words.) 46 spacewalk 43 spacewalkers 40 thermal tiles 39 spacewalks 39 spacewalking 39 shuttle robotic arm 39 gap fillers 38 Discovery astronauts 38 Astronauts 37 aboard Endeavour 37 Mastracchio 37 Spacewalk 37 shuttle Endeavour 37 heat shield 37 spacewalker 36 orbiter 36 gap filler 35 Replied 35 Mark Polansky 35 astronauts 35 careful 35 shuttle Atlantis 35 Parazynski 35 crewmates 34 astronauts aboard 34 worrier 34 Atlantis astronauts 34 space shuttle Discovery 34 Mission Control 34 Flight Engineer 34 shuttle Discovery 33 overdo 33 Vinogradov 33 spacesuits 33 Endeavour astronauts 33 Endeavour 33 NASA 33 Flight controllers 33 liftoff 33 ammonia tank 33 astronaut 33 perfectionist 32 orbital debris 32 Space Shuttle Discovery 32 being KTVB.COM member 32 spacewalking astronauts 32 spacesuit 32 shuttle astronauts 32 overthink 32 Marshburn 31 orbit 31 solid rocket boosters 31 undock 31 Ares IX 31 Hubble 31 space shuttle 31 Lopez Alegria 31 thruster 31 Space shuttle Discovery 31 insulating foam 31 rotary joint 31 Shuttle Endeavour 31 overdoing 31 shuttle missions 31 undocking 30 NASA Administrator 30 shuttle 30 payload bay 30 Gerstenmaier 30 thermal blanket 30 Malenchenko 30 spaceflight 30 Space Shuttle Atlantis 30 coachable 30 conscientious 29 precautionary 29 foam insulation 29 Soyuz capsule 29 space shuttle Endeavour 29 Behnken 29 robotic arm 29 stickler 29 lunar module 29 wear sunscreen 29 Oleg Kotov 29 disciplinarian 29 Tracy Caldwell Dyson 28 Space shuttle Atlantis 28 NASA astronaut 28 Astronaut 28 Atlantis 28 metal shavings 28 spacecraft 28 booster rockets 28 lunar orbit 28 Suffredini 28 tempt fate 28 Columbia Accident Investigation 28 Hubble Space Telescope 28 Shuttle Discovery 28 mindful