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'Space jump' skydiver: My mum's still scared

7 February 2012 Last updated at 17:42 GMT

An Austrian adventurer planning the highest skydive in history has announced he will make the attempt later this year.

Felix Baumgartner will jump from a balloon 23 miles (36.5km) up, and as he falls he will accelerate to the point where he may break the sound barrier.

He told the BBC he was working with the best scientists, but revealed his mother was not entirely happy.