Inside a deteriorating hangar at the Baikonur Cosmodrome sit a pair of derelict spacecraft, built by the Soviet Union as part of a bold challenge to the U.S. manned space program. Only weeks before NASA’s return to manned spaceflight in September 1988, more than two years after being grounded in the wake of the Challenger disaster, the Soviet space agency released photos of its own space shuttle. Named Buran (“snowstorm” in Russian), it looked almost identical to the American shuttle. On Nov. 15, 1988, Buran orbited Earth twice and made a nearly perfect landing without any humans on board. Money dried up after the Soviet Union’s collapse in 1991, however, and it never flew again.