As the aircraft broke the sound barrier, however, its quiet thump was not heard. A NASA F-15 chase plane flew nearby to ...

After decades of thunderous sonic booms keeping supersonic flight grounded over U.S. cities, a sleek experimental jet from ...

After months of test flights, NASA’s X-59 aircraft is gearing up for its biggest challenge yet: breaking the sound barrier ...

Add Yahoo as a preferred source to see more of our stories on Google. Residents on the western side of the Des Moines metro may have heard a prolonged and loud noise flying overhead on Tuesday evening ...

For several months, the X-59 has been taking part in a series of tests known as envelope expansion.

A lot of people on Next Door were posting about the very loud aircraft that flew over Houston around 12:10 p.m. Listen to our employee's camera in Sunset Heights.

The roar from the sky shook windows and wine glasses across parts of New Orleans Wednesday night. It rattled residents, too. At about 10 p.m., two loud, low-flying jets circled the city — louder and ...