On 18 March 1965, at the age of 30, Soviet cosmonaut Alexei Leonov made the first spacewalk in history, beating out American rival Ed White on Gemini 4 by almost three months.
Floating outside his tiny Voskhod 2 capsule for 10 exhilarating minutes, Leonov felt, he writes, “like a seagull with its wings outstretched, soaring high above the Earth.” In keeping with the secrecy of the Soviet space program, few people—not even his family—knew about the spacewalk ahead of time. Even less well known was how close Leonov and his crewmate, Pavel (Pasha) Belyayev, came to dying that day.
Leonov struggled to fit back through the airlock as his spacesuit ballooned due to excess pressure during the walk. In the end, he opened a valve in the suit to let some of the high-pressure oxygen out, the suit deflated and Leonov squeezed through the airlock head first.
Leonov's spacesuit is on display at the Tsiolkovsky Museum, Kaluga, Russia.