The XB-1 reached Mach 1.122 when it broke the sound barrier for the first time after about 12 minutes into the flight.

From the moment Chuck Yeager broke the sound barrier for the first time in 1947, zipping from New York to Paris in less than three hours became every traveler’s dream. It’s a dream that ...

Boom Supersonic’s XB-1 prototype test plane broke the sound barrier for the first time with a top speed of Mach 1.1.

Boom, 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 Oct. 14, 1947, Air Force test pilot Charles E. Yeager climbed into a Bell X-1 rocket plane and became the first human being to break the sound barrier in level flight.

The XB-1 jet broke the sound barrier three times during its test flight. No boom was heard from the ground.

The aerospace company put its technology to the test today, breaking the sound barrier and reviving the dream of supersonic commercial flight.

Two weeks ago, Boom Supersonic’s XB-1 demonstrator plane made history when it broke the sound barrier over the continental United States, reaching 750 miles per hour (Mach 1.12) near Barstow, ...

Boom, the startup developing a new generation of supersonic aircraft, has achieved a major milestone after its test plane broke the sound barrier for the first time. The XB-1 “Baby Boom ...

A groundbreaking image has revealed what a sonic boom looks like, showcasing the moment America's first civil supersonic jet broke the sound barrier last month.

The airspace in which Boom Supersonic complete its test holds historic significance—known as the Bell X-1 Supersonic Corridor, the area is named after the first plane to break the sound barrier ...