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This seems to be the most common discussion regarding the recent Red Bull Stratos Jump. Unless you have been living under a rock lately, you have probably seen the awesome jump from 128,000 feet. Here ...

With speeds seven times the speed of sound, temperatures hotter than the sun and chemical reactions that rip apart air molecules, hypersonic flight sounds terrifying. But a professor and some students ...

The speed of sound varies depending on the temperature of the air through which the sound moves. On Earth, the speed of sound at sea level — assuming an air temperature of 59 degrees Fahrenheit (15 ...