The test flight of the XB-1 aircraft is a step in manufacturer Boom Supersonic's goals of building a supersonic passenger jet ...

Boom, the American company building what promises to be the world's fastest airliner, broke the sound barrier for its first ...

Boom Supersonic flew its XB-1 test jet at about the speed of sound, a major step as the company works toward the daunting job ...

Boom's Supersonic XB-1 jet became the “world’s first independently developed supersonic jet” to break the sound barrier ...

Boom Supersonic's XB-1 made history on Tuesday by becoming the first civil aircraft to break the sound barrier. Before ...

GREENSBORO, N.C. — The countdown is on for XB-1, the world’s first independently developed supersonic jet, to break the sound ...

Denver-based Boom Technology's XB-1 demonstrator plane hit Mach 1.122 — 750 mph. It's the first independently developed ...

Less than a year from the maiden flight, the first civil supersonic jet made by a private company aims to demonstrate ...

The XB-1, nicknamed “Baby Boom,” was piloted by Tristan “Geppetto” Brandenburg and reached an altitude of 35,290 feet before ...

Tuesday morning at Mojave Air & Space Port in California, almost 80 years after U.S. Air Force ace Chuck Yeager first ...

Boom is convinced it can overcome the barriers that grounded the Concorde and make supersonic travel affordable and greener.

The single-seat jet, a 201-foot-long test model by Boom Supersonic, hit 844 mph just 12 minutes into its latest test flight ...