Gloster’s delta-winged jet was mocked for being slow—until it broke the sound barrier above London. Behind that boom was a ...

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 ...

Boom Supersonic’s XB-1 jet broke the sound barrier for the first time on Monday as the latest test flight indicated the aircraft hit 844 mph out of California’s Mojave Air and Space Port.

Boom Supersonic's XB-1 jet went out in style on Monday (Feb. 10). The XB-1 broke the sound barrier three times during its 13th and final test flight, which lifted off Monday from the Mojave Air ...

MOJAVE, Calif. - XB-1 became the first American-made private supersonic jet to fly faster than the speed of sound as Boom Supersonic works toward building a fleet of supersonic jets for commercial ...

Boom Supersonic hit a milestone yesterday when its XB-1 experimental jet passed Mach 1.0, the speed of sound, on its way to Mach 1.122 or 860.87 mph. The event took place over the Mohave Desert ...

Credit: Boom Supersonic Boom Supersonic’s XB-1 aircraft has become the first independently developed jet to break the sound barrier, bringing supersonic passenger planes (back) closer to reality.

A "son of Concorde" aircraft that may one day fly from New York to London in 1.5 hours has reached supersonic speeds. An incredible image shows Boom Supersonic's XB-1 jet breaking the sound barrier.