8. Baumgartner's attempt A suit disaster is one of the dangers Baumgartner might face in his Oct 9 attempt to break Kittinger's record. Baumgartner will try his jump from 23 miles (37 km) above the New Mexico desert.
If all goes well, the Austrian will reach speeds of 690 mph (1,110 kph) before deploying his parachute, breaking the sound barrier.
Baumgartner has completed two test leaps from 15 miles and 18 miles (24 km and 29 km).
Among the risks he faces are shock-shock interaction, an explosive interaction caused by shock waves colliding; flat spin, a situation in which Baumgartner could spin horizontally, forcing blood to his eyes and brain; and excessive, out-of-control speed.
Low pressure and frigid temperatures create additional dangers.
And then there's the landing. If Baumgartner falls unconscious during the jump, his emergency parachute will automatically deploy, according to the Red Bull Stratos team, which is managing the attempt.
But an unconscious parachutist can't maneuver himself around obstacles on the ground or slow his speed, which could make for a rough return to Earth.