No, that wasn’t an earthquake. A sonic boom caused by a SpaceX cargo vessel rattled Los Angeles late Saturday evening. Residents across a broad swath of the region reported a loud boom and ...

When the experimental XB-1 aircraft achieved supersonic speeds on a test flight, it did not create a disruptive sonic boom – thanks to a physics phenomenon called the Mach cutoff.

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, the American company building what promises to be the world’s fastest airliner, broke the sound barrier for its first time with a test flight in Mojave, California, on Tuesday.

Boom Supersonic's XB-1 jet broke the sound barrier for the first time on Monday as the American company seeks to deliver the world's faster airliner capable of carrying passengers between New York ...

NASA and Boom Supersonic released an incredible photo capturing the shock waves of the supersonic XB-1 aircraft while it traveled in front of the sun during a Feb. 10 test flight.