What year was the Kármán line defined?
1923
1945
1957
1969
Answer
Defined in 1957, the Kármán line is the boundary between Earth’s atmosphere and outer space. It’s set at 100 kilometers (62 miles) above sea level, where the atmosphere becomes too thin to support aeronautical flight. Named after Theodore von Kármán, a Hungarian-American engineer and physicist, it serves as a useful reference for discussing space activities and technologies.
Mastering the Skies: The Theodore von Kármán Quiz
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