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Originally Austro-Hungarian, Hermann Oberth was a physicist and engineer widely recognized as one of the pioneers of rocketry and astronautics. Born in 1894 in Hermannstadt, Austria-Hungary (present-day Sibiu, Romania), he made significant contributions to the development of liquid-fueled rockets and space travel concepts. Oberth's theoretical work and practical experiments laid the groundwork for future advancements in rocket propulsion and space exploration.