Related by context. Frequent words. (Click for all words.) 42 capsule 41 weightlessness 41 nausea 40 spacesuit 40 Orion spacecraft 39 zero gravity 39 lunar lander 39 astronauts 38 NASA 38 spacecrafts 37 astronaut 37 lunar module 37 spacecraft 36 NASA astronaut 36 Skylab 36 Nasa 36 Mars Rover 36 space shuttle 35 orbiting complex 35 parabolas 35 International Space Station 35 Apollo astronauts 35 Orion capsule 35 Scott Parazynski 35 lunar rover 35 Space Agency 35 orbiter 35 spokesman Valery Lyndin 34 GlobalFlyer 34 motion sickness 34 orbit 34 oxygen masks 34 Lopez Alegria 33 lander 33 Astronauts 33 spaceship 33 astronauts aboard 33 lunar orbit 33 Mars rover 32 bladders 32 microgravity 32 Dragon capsule 32 cosmonauts 32 NASA Astronaut 32 orbital module 32 orbiting spacecraft 32 spacesuits 32 robotic arm 32 X #A 32 manned spacecraft 32 airlock 32 Wakata 31 Yurchikhin 31 oxygen canisters 31 wet towels 31 Soyuz capsule 31 astronaut Paolo Nespoli 31 blankets 31 Eileen Collins 30 shuttle payload bay 30 Astronauts aboard 30 stay hydrated 30 orbiting laboratory 30 Greg Chamitoff 30 Space Station 30 Soyuz rocket 30 robot 30 shuttle 30 orbiting 30 Krikalev 30 Soyuz spacecraft 30 Lyndin 30 muscle atrophy 30 JAXA 30 SpaceShipOne 30 Shuttle Discovery 30 Malenchenko 30 thrusters 30 airship 30 Manalich 30 Padalka 29 scramjet 29 Mike Suffredini 29 hydrated 29 shuttle astronauts 29 Agency JAXA 29 geosynchronous orbit 29 decompression sickness 29 Cassini Huygens 29 Hoshide 29 Orbiter 29 Lee Archambault 29 shuttle robotic arm 29 Earth orbit 29 Daniel Tani 29 Kaleri 29 simulate 29 spacewalking astronauts 29 Gregory Chamitoff 29 Vinogradov 29 shuttle Atlantis