The first Link light rail train to cross the I-90 floating bridge using its own power made history Monday night, allowing the start of a series of tests to prepare for the opening of the full 2 Line ...

The XB-1 just became the first civil aircraft to go supersonic over the continental United States. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works ...

During the XB-1's historic flight on Tuesday—its 12th test flight overall—the aircraft stayed supersonic for around four minutes before breaking the sound barrier two more times during the same outing ...

Boom Supersonic has set a new speed record for its XB-1 prototype aircraft while confirming the stability of its design at high speeds for subsonic flight. The successful test puts us one step closer ...

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Boom Supersonic’s XB-1 aircraft broke the sound barrier for the first time ever on Tuesday, ushering in a new era of supersonic flight. The jet exceeded Mach 1 after taking off from the Mojave Air and ...