Buran program

The Buran (Russian: Бура́н, IPA: [bʊˈran], Snowstorm or Blizzard) program was a Soviet and later Russian reusable spacecraft project that began in 1974 at TsAGI and was formally suspended in 1993.[1] It was a response to the United States Space Shuttle program.[2] The project was the largest and the most expensive in the history of Soviet space exploration.[1] Development work included sending the BOR-5 on multiple sub-orbital test flights, and atmospheric flights of the OK-GLI. Buran completed one unmanned orbital spaceflight in 1988 before its cancellation in 1993.[1]