Who was the first person to break sound barrier in freefall?

He is best known for jumping to Earth from a helium balloon in the stratosphere on 14 October 2012. Doing so, he set world records for skydiving an estimated 39 km (24 mi), reaching an estimated top speed of 1,357.64 km/h.He became the first person to break the sound barrier without vehicular power relative to […]

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