A Soviet cosmonaut…

A Soviet cosmonaut, the son of collective farm workers, born in 1934 in a village west of Moscow. On 12 April 1961, aboard Vostok 1, he became the first human to journey into outer space, completing a single orbit of Earth in about 108 minutes. The historic flight made him an instant worldwide celebrity. He died in 1968 during a routine training flight, and his achievement is celebrated every April.

The answer in 11 letters