According to a final analysis by Baumgartner's team Red Bull Stratos, the 43-year-old reached 1,357.6 kilometres (843.6 miles) an hour, or Mach 1.25, in freefall.

Previously his team had said that the experienced skydiver had plunged back to Earth in his specially made spacesuit at 834 miles an hour or Mach 1.24.

The Federation Aeronautique Internationale governing body is currently reviewing whether to confirm this as a world record, Red Bull Stratos said.

Baumgartner's leap from a capsule at 38,969.4 metres (127,852.4 feet) above California on October 14 was watched live by millions on television and the Internet.