An aircraft developed by Boom Supersonic became the first independently funded jet to break the sound barrier this week. The ...

Boom Supersonic's XB-1 demonstrator craft could become the first commercial jet to break the sound barrier since Concorde after acing its 11th test and reaching 0.95 Mach at low altitudes.

Boom Supersonic plans to break the sound barrier during a test flight this morning, with the flight due to be streamed live online. If the test is successful, it will mark the first time the ...

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 ...

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 ...

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 ...

A sleek white aircraft has become the first independently developed jet to break the sound barrier A sleek white aircraft became the first independently developed jet to break the sound barrier ...