X-15 pilot's 1963 altitude record revisited
On Aug. 22, 1963, Joe Walker flew the X-15 to over 67 miles, setting a world altitude record. This was the second suborbital flight of the X-15 program, making Walker the first person to reach space twice. The mission contributed to later spacecraft design and reusability concepts.
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Original headline: “On this day in space! Aug. 22, 1963: X-15 sets world altitude record.” Browse more stories.