Aerospace startup Boom says they've proven quiet supersonic flight is possible with their passenger airplanes after a successful second test flight.

When the experimental XB-1 aircraft achieved supersonic speeds on a test flight, it did not create a disruptive sonic boom – ...

Boom’s XB-1 reached Mach 1.112, after 10 years of planning and a year of flight tests. Up next: its Overture supersonic ...

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