Korolev's design bureau was, beginning with the first artificial satellite Sputnik 1 and the first crewed spaceflight of Vostok 1, responsible for a major part of the Soviet space program. It was the main rival of OKB-52 (later known as TsKBM, then the design bureau of Vladimir Chelomei) during the Soviet crewed lunar programs and the Soviet space station program. OKB-1 was among others responsible for the development of the crewed Soyuz spacecraft and its Soyuz rocket, the N1 "Moon Shot" rocket, large parts of the Salyut space station program, the uncrewed Progress resupply craft and designed the Energia rocket for the Buran space shuttle program. Since the early beginnings of the Luna programme it designed many space probes, among others of the Venera, Zond and Mars program.