Red Bull's Stratos Mission To Attempt World Record Skydive | Popular Science

Red Bull's Stratos Mission To Attempt World Record Skydive | Popular Science: But a few things are certain. For a short time inside his pressurized spacesuit, Baumgartner will be the fastest man alive. Thirty seconds after leaping from a small capsule, in fact, he'll exceed the speed of sound in the thin upper atmosphere by traveling 690 mph. And if he safely parachutes to the ground between 12 and 15 minutes later, he'll walk away with at least four new world records: the highest skydive, the longest free fall, the first to reach supersonic speeds in free fall, and the highest manned balloon ride.