With the LBFD, NASA hopes to reduce the sound of the sonic boom to a gentle thump, similar to the sound of a neighbor closing a car door or thunder rumbling in the distance—that is, if anyone ...

On Oct. 14, 1947, Yeager, then a 24-year-old captain, pushed an orange, bullet-shaped Bell X-1 rocket plane past 660 mph to break the sound barrier, at the time a daunting aviation milestone.

But unlike Yeager, Boom's XB-1 traveled faster than the speed of sound twice during the same flight. XB-1's previous record was Mach 0.95, or 728 miles per hour, which it hit during its last test ...

A civilian jet broke the sound barrier for the first time Tuesday while making a historic test flight over the Mojave Desert. The XB-1 aircraft, manufactured by Boom Supersonic, was piloted by ...

MINNEAPOLIS (WCCO) -- A new sound barrier is getting a lot of attention, but it may not catch your eye. A transparent highway barrier went up along Interstate 35E in Little Canada this week.