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Saturday, May 25, 2013 | 11:41 a.m.

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Physicist Explains Skydiver's Supersonic Speed

Nick Warner, a physics professor at the Univ. of Southern California, says the lack of air resistance was key when Felix Baumgartner broke the sound barrier after he jumped from his balloon-tethered capsule 24-miles above earth. (Oct. 15)
 

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