During the Nov. 5 test flight, which lasted 55 minutes, XB-1 reached an altitude of 23,015 feet (7,015 meters) and a new top ...

Supersonic aviation startup Exosonic, which was working on commercial and military faster-than-sound jets, shutdown after ...

XB-1 demonstrator did not quite break the sound barrier during its seventh test flight but reached speed and altitude ...

Boom Supersonic's XB-1 hits a new speed milestone of 629 mph, bringing it closer to breaking the sound barrier—setting the ...

Using a custom-built machine to launch microprojectiles at supersonic speeds, Cornell researchers have uncovered new details ...

The latest test flight was piloted by Tristan “Geppetto” Brandenburg, a graduate of the United States Naval Test Pilot School. Along with breaking the plane’s speed record, his flight also reached new ...

Boom Supersonic's XB-1 aircraft has achieved its fastest speeds yet, blasting towards its goal of surpassing the speed of sound. During its seventh test flight on November 5, the experimental ...

The jet nicknamed the 'Son of Concorde' has just hit a new top speed in its latest test flight.

Supersonic test plane XB-1 smashed its top speed record Tuesday, screaming through the sky at Mach 0.82 or 499 knots (575 miles per hour) true air speed. The milestone, achieved high above ...

The supersonic jet that could fly passengers from London to New York City in 3.5 hours has reached a new top speed in its ...