What just happened? You might not be familiar with Boom Supersonic, but the startup has just set a notable world first: its XB-1 demonstrator became the first privately developed aircraft to break the sound barrier by reaching Mach 1.122, or 860.8 miles per hour. The achievement is a huge milestone toward the return of commercial supersonic flights, which stopped over 20 years ago.
Piloted by former US Navy aviator Tristan