DETLEV VAN RAVENSWAAY / SCIENCE PHOTO LIBRARY DETLEV VAN RAVENSWAAY / SCIENCE PHOTO LIBRARY
Yuri Gagarin commemorative stamp. Russian postage stamp commemorating Yuri Gagarin's space flight. Gagarin made the first manned space flight on 12th April 1961. He orbited the Earth once in the Vostok 1 spacecraft, a flight that lasted 1 hour and 48 minutes. He later returned to active service as a test pilot, dying in a crash during a training flight in 1968.
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