Felix Baumgartner broke the sound barrier by skydiving from 128,100 feet above the Earth's surface. He rode a helium balloon to the top of the stratosphere before making a death-defying leap from his capsule. During his four minute free fall, Baumgartner reached speeds of Mach 1.24 and had to regain control after starting to spin uncontrollably. He successfully landed, becoming the first person to break the sound barrier outside of an aircraft.