Soveit cosmonaut Yuri Gagarin became an international celebrity when he was launched into space onboard Vostok 1 on April 12, 1961, becoming the first human to fly in space.
Following his historic space flight, he was never again allowed to fly in space. He became the deputy training director at the cosmonaut training facility known as "Star City" and began to retrain as a fighter pilot during that process. During a routine training flight, his Mig-15 crashed and Gagarin was killed. The cause of the accident was never determined.
