Porte-clés Sputnik 4 May 15 1960

Sputnik 4 (Korabl Sputnik 1) was launched May 15, 1960. It was the first test-flight of the Vostok spacecraft that would be used for the first human spaceflight. When reentry was attempted, a bug in the guidance system pointed the capsule in the wrong direction, so instead of re-entering the atmosphere the satellite moved into a higher orbit. It re-entered the atmosphere on or about September 5, 1962. USSR issued the stamp 1960 (Scott 2350).