Some may already be familiar with the sonic boom that accompanies a break to the sound barrier, but when and why would ...

Felix Baumgartner, the Austrian extreme sports pioneer who became the first person to break the sound barrier without ...

Felix Baumgartner jumped from a capsule at an altitude of 39km, becoming the first person to break the sound barrier without ...

Austrian daredevil “fearless Felix” Baumgartner, who died on Thursday aged 56, stunned fans around the world by breaking the ...

An incredible image shows Boom Supersonic's XB-1 jet breaking the sound barrier.

NASA has released a new image showing the moment Boom Supersonic's XB-1 jet broke the sound barrier without producing an audible sonic boom.

Boom Supersonic's fourth test flight of its XB-1 prototype aircraft reached Friday a new top speed of Mach 0.617 — more than halfway to achieving supersonic flight.

In 2003, British Airways and Air France retired Concorde—history’s only successful supersonic airliner. More than two decades later, a civil aircraft has broken the sound barrier once again ...

An incredible image shows Boom Supersonic's XB-1 jet breaking the sound barrier.

A "son of Concorde" aircraft that may one day fly from New York to London in 1.5 hours has reached supersonic speeds. An incredible image shows Boom Supersonic's XB-1 jet breaking the sound barrier.

A "son of Concorde" aircraft that may one day fly from New York to London in 1.5 hours has reached supersonic speeds. An incredible image shows Boom Supersonic's XB-1 jet breaking the sound barrier.