On April 12, 1961, Soviet cosmonaut Gagarin blasted off in a Vostok rocket and he orbited Earth for 106 minutes. He was the cosmonaut who was selected from over three thousand fighter pilots... Read allOn April 12, 1961, Soviet cosmonaut Gagarin blasted off in a Vostok rocket and he orbited Earth for 106 minutes. He was the cosmonaut who was selected from over three thousand fighter pilots throughout the Soviet Union.On April 12, 1961, Soviet cosmonaut Gagarin blasted off in a Vostok rocket and he orbited Earth for 106 minutes. He was the cosmonaut who was selected from over three thousand fighter pilots throughout the Soviet Union.