California has played a central role in NASA's push to test its X-59 jet and usher in an era of commercial supersonic air travel. Here's what to know.

Add Yahoo as a preferred source to see more of our stories on Google. Did you hear a house-shaking boom shortly after 2 p.m. Wednesday? If you did, you can now say that you've heard a sonic boom. An F ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

More than two decades since the Concorde supersonic airliner last took to the skies, NASA has been flying an experimental aircraft designed to replace loud sonic booms with a quieter thump equivalent ...