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History of spaceflight

Spaceflight began in the 20th century following theoretical and practical breakthroughs by Konstantin Tsiolkovsky, Robert H. Goddard, and Hermann Oberth. First successful large-scale rocket programs were initiated in the 1920s Germany by Fritz von Opel and Max Valier, and eventually in Nazi Germany by Wernher von Braun.[2] The Soviet Union took the lead in the post-war Space Race, launching the first satellite,[3] the first man[4] and the first woman[5] into orbit. The Un...  more