Watch the video from this link. Your heart will pump just as fast as Felix Baumgartner, who completed a 24-mile skydive today (wrapping up a five-year effort to shatter a world record set 52 years ago). A 30 million-cubic-foot helium balloon hoisted a 3,000-pound capsule carrying the daredevil. He reached 833.9 mph, or mach 1.24, which is faster than the speed of sound. No one has ever reached that speed wearing only a high-tech suit.