Flight 90 of the North American X-15 was a test flight conducted by NASA and the US Air Force in 1963. It was the first of two X-15 missions that passed the 100-km high Kármán line.
Flight 90 of the North American X-15 was a test flight conducted by NASA and the US Air Force in 1963. It was the first of two X-15 missions that passed the 100-km high Kármán line.