Supersonic skydiver

摘要

On 16 August 1960, US air force pilot Joe Kittinger donned a spacesuit, climbed into the gondola of a hot-air balloon, rose to 31,333 metres above the Earth, and jumped. The highest everskydive lasted 4 minutes and 36 seconds, Later this year, Felix Baumgartner will try to go higher and fall faster. Catherine Brahic asks him and his technical director Art Thompson what drives them.