In 1947, Chuck Yeager became the first human to break the sound barrier when he pushed the Bell X-1 past Mach 1 during a flight over the Mojave Desert. Boom Supersonic's XB-1 is a stepping stone ...
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 ...
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