XB-1 demonstrator did not quite break the sound barrier during its seventh test flight but reached speed and altitude ...

Boom Supersonic's XB-1 aircraft has achieved its fastest speeds yet, blasting towards its goal of surpassing the speed of ...

Boom Supersonic's XB-1 hits a new speed milestone of 629 mph, bringing it closer to breaking the sound barrier—setting the ...

During the Nov. 5 test flight, which lasted 55 minutes, XB-1 reached an altitude of 23,015 feet (7,015 meters) and a new top ...

Residents of Santa Barbara County were treated to an unexpected rumble in the evening sky Friday, as a sonic boom ...

A burst cylinder at a downtown business was eyed as a possible explanation for loud sound that rattled Schenectady and ...