The U.S. military is reportedly developing a hypersonic jet plane that could soar at up to five times the speed of sound -- faster than a bullet, which generally travels at Mach 2, or twice the speed of sound.
The U.S. military is reportedly developing a hypersonic jet plane that could soar at up to five times the speed of sound -- faster than a bullet, which generally travels at Mach 2, or twice the speed of sound.
Share this Article
Recommended