Related by context. Frequent words. (Click for all words.) 61 Gorie 57 ISS Expedition 57 NASA astronaut corps 56 Lee Archambault 56 Discovery STS 55 Shuttle Discovery 55 Alexander Kaleri 55 Sturckow 55 Leland Melvin 54 astronaut Peggy Whitson 54 Tim Kopra 54 Eyharts 54 Piers Sellers 54 Shuttle Endeavour 54 Richard Linnehan 53 Shuttle commander 53 John Grunsfeld 53 Eric Boe 53 space shuttle 53 Stephen Frick 53 NASA astronaut 53 De Winne 53 Alan Poindexter 52 International Space Station 52 Commander Eileen 52 Mission Specialists 52 Shuttle Atlantis 52 astronaut 51 Caldwell Dyson 51 VSS Enterprise 51 Greg Chamitoff 51 Kenneth Ham 51 Tony Antonelli 51 Space Shuttle Endeavour 51 Oleg Kononenko 51 NASA Astronaut 51 astronaut Julie Payette 51 Nicole Stott 51 Koichi Wakata 51 Zamka 50 Shuttle astronauts 50 orbit insertion 50 spacecraft 50 commander Peggy Whitson 50 astronauts 50 Dan Tani 50 Andrew Feustel 50 ESA astronaut 50 June Scobee Rodgers 50 Space shuttle Endeavour 50 spaceship 50 commander George Zamka 50 Oleg Skripochka 50 spaceflights 49 Hobaugh 49 Space shuttle Discovery 49 Mike Leinbach 49 Nie Haisheng 49 director Tony Ceccacci 49 Russian cosmonaut Yuri Malenchenko 49 NASA Space Shuttle 49 Sandra Magnus 49 Japanese astronaut Koichi 49 Krikalev 49 PSLV C# 49 Rex Walheim 49 Bill Readdy 49 Astronaut 49 commander Rick Sturckow 49 Mikhail Tyurin 49 robotic spacecraft 49 Brent Jett 49 space shuttle Discovery 49 Heidemarie Stefanyshyn Piper 49 Peggy Whitson 48 Space Shuttle Discovery 48 Bill Gerstenmaier NASA 48 NEEMO 48 David Leckrone 48 Grunsfeld 48 Julie Payette 48 director Holly Ridings 48 Mark Polansky 48 Robert Behnken 48 Space Shuttle 48 Bob Thirsk 48 Hubble servicing 48 Yurchikhin 48 shuttle Discovery 48 Dorothy Metcalf Lindenburger 48 Russian cosmonaut 48 SpaceX Falcon 9 48 ZERO G 48 shuttle Atlantis 47 Launch Vehicle 47 EVAs 47 Mikhail Kornienko 47 Yang Liwei 47 crewmates 47 planetary exploration 47 spaceflight