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Sergej Koroľov
Rocket engineer and cosmonaut
Moscow, Soviet Union
About Sergej
Sergej Koroľov was a Soviet rocket engineer and cosmonaut. He is best known for his work on the R-7 rocket that launched Sputnik and the first human spaceflight. Koroľov was a key figure in the Soviet space program and was a leading expert on rocket propulsion.
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