On April 12, 1961, the Soviet Union launched Vostok-1 with cosmonaut Yuri Gagarin, becoming the first nation to send a human into space. This historic mission, lasting 108 minutes and completing one orbit around Earth, demonstrated that humans could survive and function in microgravity, answering critical questions about human physiology in space. The achievement established Soviet leadership in the Space Race, as the United States was still preparing for its first suborbital human flight, which would occur nearly a month later on May 5, 1961.
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