A sleek white aircraft has become the first independently developed jet to break the sound barrier. The XB-1 aircraft ...

The single-seat jet, a 201-foot-long test model by Boom Supersonic, hit 844 mph just 12 minutes into its latest test flight ...

The test flight of the XB-1 aircraft is a step in manufacturer Boom Supersonic's goals of building a supersonic passenger jet ...

An aircraft developed by Boom Supersonic has become the first independently funded jet to break the sound barrier.

Boom Supersonic's XB-1 made history on Tuesday by becoming the first civil aircraft to break the sound barrier. Before ...

Boom Supersonic passed a major milestone Tuesday on its path to reintroduce supersonic commercial flights. After years of ...

Boom's Supersonic XB-1 jet became the “world’s first independently developed supersonic jet” to break the sound barrier ...

Prototype aircraft for supersonic airliner breaks sound barrier ...

Boom Supersonic plans to break the sound barrier during a test flight this morning (Jan. 28). This would mark the first time ...

Boom Supersonic's XB-1 demonstrator craft could become the first commercial jet to break the sound barrier since Concorde ...

About 35,000 feet (10,670 meters) over the Mojave Desert, northwest of Los Angeles, Boom Supersonic's XB-1 became the first ...

On its 12th test flight, the Boom XB-1 prototype broke the sound barrier three times and achieved a top speed of Mach 1.1.