how long are astronauts typically in space
Japan, Canada and Europe. NASA astronaut Mike Lopez-Alegria has flown the longest U.S. space. station mission to date, at 215 days. Valeri Polyakov, a Russian cosmonaut, spent 437 days in. space during one mission. A space shuttle crew is typically five to seven crewmembers. We have. carried as few as two and as many as eight at one time, and space shuttle missions have been as. short as two days and as long as 18 days.