Related by context. Frequent words. (Click for all words.) 43 robotic arm 42 Spacewalkers 39 manipulate 39 astronauts aboard 38 spacewalking astronauts 36 Astronauts 36 gyroscope 36 Space Station 36 microgravity 36 spacewalkers 36 Padalka 35 shuttle robotic arm 35 spectrograph 35 spacecraft 35 astronauts 35 Flight Engineer 35 robot 35 mathematical calculations 35 truss segment 35 JWST 35 lunar module 34 crewmates 34 Space Shuttle Endeavour 34 NASA astronaut 34 GLAST 34 Lopez Alegria 34 Very Large Telescope 34 spacewalks 34 International Space Station 34 thrusters 33 MESSENGER 33 astronaut 33 Cassini orbiter 33 orbiter 33 cosmonauts 33 grippers 33 space shuttle Discovery 33 NASA Cassini spacecraft 33 Yurchikhin 33 Space Agency 33 robotic 33 Space Shuttle Atlantis 33 spacewalk 33 cosmonaut 32 NASA 32 interactively 32 lunar orbit 32 Orbiter 32 Mission Specialists 32 NASA Mars Reconnaissance 32 rotary joint 32 zero gravity 32 Space Shuttle Discovery 32 manipulations 32 orbiting 32 Robonaut 32 gyroscopes 32 Sharipov 32 shuttle Atlantis 32 thruster 32 Mars Reconnaissance Orbiter 31 manipulating 31 tasks 31 Soyuz capsule 31 manipulator 31 airlock 31 Stefanyshyn Piper 31 Russian cosmonauts 31 Soichi Noguchi 31 orbiting laboratory 31 mathematical equations 31 Tracy Caldwell Dyson 31 spacesuits 31 Astronaut 31 Canadarm 31 spacecrafts 31 simulate 31 payload bay 30 Discovery astronauts 30 orbit 30 Cassini spacecraft 30 mass spectrometer 30 spacemen 30 Hubble Space Telescope 30 spacesuit 30 Mars lander 30 Atlantis astronauts 30 Fincke 30 manipulated 30 spectrometer 29 Mars rover 29 space shuttle Atlantis 29 Laboratory Pasadena 29 solar arrays 29 ammonia tank 29 aboard Endeavour 29 inner workings 29 shuttle Endeavour 29 solving puzzles 29 orbital outpost 29 Dextre