Sound waves are vibrations that are passed on between particles. The speed of sound is the distance a sound travels divided by the time it takes.

A person fires a starting pistol. A distant observer stood 200 metres away (measured using a 20 m tape measure or trundle wheel) records the time between seeing the flash of light from the ...

A newly released image shows the sound barrier being broken on February 10 as Boom Supersonic’s XB-1, America’s first civil ...

In a major leap forward in the field of hypersonic flight, China has announced that an engine developed by it has shown to ...

Boom Supersonic, the company aiming to create commercial planes that can travel faster than the speed of sound, have ...

Boom Supersonic’ s XB-1 aircraft climbed over 35,000ft on Tuesday before accelerating to Mach 1.1 speed and then breaking the sound barrier in three high-speed runs spanning 35 minutes over the Mojave ...

Venus Aerospace has completed the inaugural test flight of a drone fitted with its "rotating detonation rocket engine" (RDRE) — accelerating it to just under the speed of sound. The company ...

SPEEDY flights that blast off faster than the speed of sound look set to return to skies as a US company reveals huge progress on a new Concorde-like service. Boom's XB-1 jet, dubbed the "Son of ...

Commercial flights faster than the speed of sound have taken another step closer to reality. Boom Supersonic announced Monday that its airliner could fly above Mach 1 without producing a sonic ...