In case you've faced some hurdles solving the clue, I just can't catch a break sound, we've got the answer for you. Crossword puzzles offer a fantastic opportunity to engage your mind, enjoy leisure ...

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 test vehicle is scheduled to lift off today (Jan. 28) at 11 a.m. EST (1600 GMT). When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

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 ...

When you take home a new device, it's natural to expect it to work best right out of the box. But some things get better with time and use. New shoes often feel uncomfortable until they've been worn ...