Add Yahoo as a preferred source to see more of our stories on Google. American aerospace startup Boom made history on Tuesday by breaking the sound barrier during the test flight of its Boom ...

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NASA's experimental supersonic X-59 jet designed to travel faster than the speed of sound is preparing for its second flight ...

Hypersonic flight could one day make long-haul travel as quick as a short movie. Researchers are testing how turbulence behaves at extreme speeds, a critical hurdle for designing these aircraft. Their ...

The sound barrier is something many people have heard of, but few understand, as it's somewhat of a misnomer. The speed of sound is known as Mach 1 (767 mph), and when an object moves beyond this, ...