Speed of Sound

Virgin Galactic's SpaceShipTwo Breaks Speed Of Sound In First Rocket-Powered Test Flight

Virgin Galactic successfully completed the first rocket-powered test of its SpaceShipTwo (SS2) aircraft, the vehicle that the company will use to launch the world's first commercial space flights later this year.

The Tech Behind Red Bull Stratos And The Death-Defying Leap From The Edge Of Space

Sixty-five years to the day since Captain Charles Yeager became the first man to travel past the speed of sound, Felix Baumgartner yesterday became the only living man to ever break the sound barrier without a spacecraft. Logistically, the Red Bull Stratos mission is a feat in of itself, though it’s the technology behind it that made this particular jump so fascinating.