character: Wernher von Braun
topic: History of Rocket Technology
grade: 9
subject: Science
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character: Robert H. Goddard
topic: Early Developments in Rocketry
grade: 9
subject: Science
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character: Konstantin Tsiolkovsky
topic: Theoretical Foundations of Rocket Science
grade: 9
subject: Science
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character: Sergei Korolev
topic: Soviet Contributions to Space Exploration
grade: 9
subject: Science
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