Template:POTD/2008-06-26
From Infogalactic: the planetary knowledge core
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A newsreel showing the breaking of the sound barrier on 14 October 1947 by Chuck Yeager in the rocket-powered Bell X-1. Flying at an altitude of 45,000 ft (13.7 km), Yeager became the first person to break the sound barrier in level flight. Film credit: United States Air Force |
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