Maiden flight of Vostok-K, second stage engine failure, spacecraft separated and recovered. Two dogs aboard, both survived. December 22, 1960 at 07:45 UTC · Launch Failure Vostok-K — Soviet Space Program, to Low Earth Orbit 1/5, Baikonur Cosmodrome, Republic of Kazakhstan The world's 93rd orbital launch attempt, and 39th of 1960. Program: Vostok Data: Launch Library 2, The Space Devs. Image via The Space Devs.