Boom Supersonic made history today (Jan. 28) when its XB-1 jet broke the sound barrier for the first time on a test flight ...

Manned by Boom Supersonic's chief test pilot Tristan "Geppetto" Brandenburg, the XB-1 launched in the early hours of Tuesday, reaching an altitude of 35,290 feet and accelerating to speed Mach 1. ...

A civilian jet broke the sound barrier for the first time Tuesday while making a historic test flight over the Mojave Desert. The XB-1 aircraft, manufactured by Boom Supersonic, was piloted by ...

The Colorado company has received a first-of-its-kind approval from the U.S. Federal Aviation Administration (FAA) to exceed Mach 1 during test flights of its XB-1 supersonic jet.

The jet reached Mach 0.82 during the test flight, nearing Mach 1 — the speed of sound. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

The XB-1, which has now completed 12 successful test flights since it first took to the air in March 2024, is the precursor to the development of Boom’s supersonic commercial airliner, Overture.

Denver-based Boom Supersonic's XB-1 demonstrator plane, with Chief Test Pilot Tristan "Geppetto" Brandenburg at the controls, hit Mach 1.122, or 750 mph, at an altitude of about 35,000 feet.