written, produced, & directed by Iain Riddick ; produced by Ruth Roberts ; produced by Darlow Smithson Productions Ltd, Shock of Mighty Productions and Handel Productions (EFS) Inc. in association with NOVA/WGBH Educational Foundation and Discovery Channel Canada ; WGBH
Smithsonian Institution and Lockheed Corporation ; produced by Graeme Ferguson ; written, edited and narrated by Toni Myers ; principal director, Ben Burtt ; filmed in space by the astronauts