An aircraft developed by Boom Supersonic has become the first independently funded jet to break the sound barrier.

The XB-1 aircraft accelerated to Mach 1.05 within about 11 minutes of taking off, according to Boom Supersonic and live video ...

The neurological condition can cause people like Robert F. Kennedy Jr. to have voices that break and can sound "strangled." ...

Boom Supersonic's XB-1 achieved a milestone by successfully breaking the sound barrier on a test flight, marking the first ...