Why Did Cosmonauts Fly Missions In Their Underwear and When Did Cosmonauts Start Wearing Space Suits?
Cosmonauts wear space suits now, at least during takeoff, landing, and docking. Originally, space suits were not required, and some cosmonauts flew in their underwear. But on June 29, 1971, when the three cosmonauts in Soyuz 11 undocked from the space station Salyut 1, an air release valve suddenly opened. Without the life-suppo
