Boom Supersonic’s XB-1 jet became the first independently developed aircraft to break the sound barrier in the Mojave Desert on Tuesday. The test flight marks a milestone in Boom’s effort to ...

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’s XB-1 jet broke the sound barrier for the first time on Monday as the American ... aircraft came following repeated failures to break the sound barrier in previous test flights ...

(Boom Supersonic via AP) (Uncredited) A sleek white aircraft became the first independently developed jet to break the sound barrier Tuesday, tearing through the air tens of thousands of feet ...

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 ...