Denver-based Boom Technology's XB-1 demonstrator plane hit Mach 1.122 — 750 mph. It's the first independently developed ...

A private company aiming to build the first supersonic airliner since the Concorde retired more than ... non-binding purchase agreement" with the company to buy 15 of the airliners, with "options ...

At a time when the Concorde Agreements are being negotiated, perhaps that’s a clause that should be added.

It’s now almost 55 years since the 002 prototype for Concorde first flew at Mach 1 on March 25, 1970, and more than 21 years since commercial supersonic travel ended with the Anglo-French ...