Thanks to upgraded engines and advanced computers that monitor weather in real time, Boom Supersonic achieved the holy grail ...

Written with all of the fierce intelligence and passion for truth that millions have come to expect from Amy Goodman’s reportage, Breaking the Sound Barrier is, in Arianna Huffington’s words ...

The XB-1 aircraft accelerated to Mach 1.05 within about 11 minutes of taking off, according to Boom Supersonic and live video of the test flight.

The skydiver reached speeds of 843.6 mph ... Baumgartner’s goal was to be the first human to break the sound barrier outside of an aircraft. To conquer the challenge, he wore a pressurized suit ...

Editor's note: Boom Supersonic successfully broke the sound barrier with the XB-1 today in a major milestone. Read our coverage here. Boom Supersonic plans to break the sound barrier during a test ...

During the XB-1's historic flight on Tuesday—its 12th test flight overall—the aircraft stayed supersonic for around four minutes before breaking the sound barrier two more times during the ...

Boom Supersonic's XB-1 demonstrator jet became the first U.S.-made civilian supersonic jet to break the sound barrier. The independently funded XB-1 reached a speed of Mach 1.122, or about 750 mph ...