Skydiver Felix Baumgartner breaking the sound barrier - Red Bull Stratos - 24 miles into space. miles an hour Oct 13 or 14 , The first man to break sound barrier in a plane also went back up to break it again 65 yrs after his success - now he is
A cloud forms as this Hornet aircraft speeds up to supersonic speed. Aircraft flying this fast push air up to the very limits of its speed, forming what's called a bow shock in front of them. Credit: Ensign John Gay, USS Constellation, U.