More than 20 years since the final Concorde flight, is a small US start-up now on course to bring back supersonic air travel?

American firm Boom Supersonic’s XB-1 has once again reached supersonic speeds without producing an audible boom, following ...

During the second supersonic flight of the XB-1 technology demonstrator today, the jet exceeded Mach 1 three times without a ...

A supersonic Boom Supersonic flight across the United States — beginning potentially as early as 2029 — could be at least 90 ...

American company Boom Supersonic flew faster than the speed of sound with its XB-1 supersonic demonstrator aircraft. It’s now ...