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 above the Mojave Desert and a crowd of ...

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.

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

Boom Supersonic's XB-1 demonstrator plane just went supersonic in the skies over California's Mojave Desert, making it the ...

XB-1 is Boom's technology demonstrator aircraft and the world's first independently developed supersonic jet. The aircraft ...

Given that it’s been 156 days without measurable rain in Phoenix, we are making Monday a First Alert day because of the ...

Tuesday morning in California's Mojave Desert, the Boom Supersonic XB-1 — the world's first independently developed ...

PHOENIX (AZFamily) — A winter storm is on the way to Arizona, with weather changes anticipated over the upcoming weekend and into early next week.