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Konstantin Tsiolkovsky

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Konstantin Eduardovich Tsiolkovsky (Russian: Константи́н Эдуа́рдович Циолко́вский; Polish: Konstanty Ciołkowski; 17 September [O.S. 5 September] 1857 – 19 September 1935) was a Russian and Soviet rocket scientist who pioneered astronautics. Along with Robert Esnault-Pelterie, Hermann Oberth, Fritz von Opel and Robert H. Goddard, he is one of the founding fathers...

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