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Explorer II

Explorer II reached over 21,945 meters (72,000 feet) in 1935.

Explorer II

On November 11, 1935, Stevens and Anderson ascended in Explorer II from the Stratobowl, a smooth hollow in South Dakota’s Black Hills. They reached 21,945 meters (72,395 feet), a world altitude record that would stand for two decades.

Credit: National Air and Space Museum, Smithsonian Institution

Date: 1935

Photo Number: SI-A-43421

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Explorer II

Explorer II