The Red Bull Stratos team has launched skydiver Felix Baumgartner, who will attempt to become the first free-falling human to reach the speed of sound by jumping from 23 miles above the earth. After repeated weather delays last week and one abortive attempt, the capsule launched at 9:30 a.m. on Sunday in Roswell, New Mexico. It will take about two hours for the balloon to ascend to the height of the jump. If successful, Baumgartner will free fall for about 10 minutes, reaching speeds of almost 700mph.