Related by context. Frequent words. (Click for all words.) 65 astronauts 60 cosmonauts 56 astronaut 56 cosmonaut 55 Padalka 54 Astronauts 54 Russian cosmonauts 53 spacecraft 51 spaceship 51 International Space Station 49 spacewalk 49 Discovery astronauts 49 Mission Control 48 Fincke 48 Endeavour astronauts 47 Nasa 47 spacewalkers 47 spacewalks 47 space shuttle Discovery 47 Soyuz capsule 47 orbiter 47 NASA 47 spacesuit 46 shuttle Endeavour 46 shuttle Atlantis 46 spacesuits 46 astronauts aboard 46 shuttle Discovery 46 Soyuz 46 shuttle astronauts 46 zero gravity 45 interplanetary 45 spacewalker 45 Atlantis astronauts 45 orbiters 45 space shuttle 45 Astronaut 45 orbiting laboratory 45 rovers 45 lunar 44 Lopez Alegria 44 Martian 44 orbiting 44 Russian cosmonaut 44 Mike Fincke 44 outer space 44 Gagarin 44 Soyuz spacecraft 43 crewmates 43 lander 43 blastoff 43 Space Station 43 space shuttles 43 Spacewalk 43 Mars rover 43 spaceships 43 Wakata 43 crewmembers 43 spacewalking astronauts 43 manned missions 43 Space Shuttle 43 Space Shuttle Discovery 42 shuttle missions 42 orbit 42 Shuttle Discovery 42 weightlessness 42 lunar landing 42 martian 42 space shuttle Endeavour 41 Chamitoff 41 lunar exploration 41 spacewalking 40 orbiting lab 40 Atlantis 40 Mars 40 spaceflight 40 aliens 40 moon 40 Yuri Gagarin 40 explorers 40 orbiting outpost 40 NASA astronaut 39 undock 39 Red Planet 39 Russian Soyuz spacecraft 39 manned spacecraft 39 shuttle 39 Gerstenmaier 39 Suffredini 39 Thirsk 39 Buzz Lightyear 39 thrusters 39 Sharipov 39 adventurers 39 undocking 39 Chang'e 39 airlock 39 lunar surface 39 manned spaceflight 38 Martian surface 38 Flight Engineer