Sergei Korolev
Sergei Pavlovich Korolev (12 January 1907 [O.S. 30 December 1906] – 14 January 1966) was a Soviet rocket engineer and spacecraft designer who led the development of the Soviet space program during the early years of the Space Race. Korolev directed development of the R-7 rocket, the world's first intercontinental ballistic missile (ICBM) and was a leader in the Soviet space programme which used modified versions of the R-7 for several notable achievements.