What major barrier did Baumgartner break during his stratosphere jump?
The time barrier
The space barrier
The sound barrier
The light barrier
Answer
The sound barrier is the speed of sound in air, which is 768 mph at sea level. On October 14, 2012, Felix Baumgartner broke the sound barrier during his stratosphere jump from 128,000 feet. He reached a speed of 833.9 mph, becoming the first person to do so without a vehicle.
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