Yuri's Night is an international celebration held every April 12 to commemorate milestones in space exploration. It is named for the first human to launch into space, Yuri Gagarin, who flew the Vostok 1 spaceship on April 12, 1961. In 2011, the fiftieth anniversary of Gagarin's flight, Yuri's Night was celebrated at over 567 events in 75...
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