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Although few people ever get the chance to travel at the speed of sound, it is an alluring flight goal and an impressive technological feat. Though average people have flown at high speeds on ...

Bobby Moore explains the crazy difference between the speed of light and the speed of sound.

The United States banned supersonic flights over its land in 1973 due to their ear-splitting sonic booms. Experts are building a plane that should travel at those speeds but create only gentle thumps ...

Neutron stars in the universe, ultracold atomic gases in the laboratory, and the quark–gluon plasma created in collisions of atomic nuclei at the Large Hadron Collider (LHC): they may seem totally ...

The universal speed limit of any kind of wave – be it electromagnetic or gravitational – travelling through a vacuum has been known since Albert Einstein developed his theory of special relativity in ...

The Federal Aviation Administration is resurrecting the dream of passengers flying faster than the speed of sound after it ...