The crew of space shuttle Endeavour poses for pictures after returning to Earth at the Kennedy Space Center in Cape Canaveral, Florida July 31, 2009. From left are Christopher Cassidy, Thomas Marshburn, Pilot Douglas Hurley, Mission Commander Mark Polansky, Julie Payette of the Canadian Space Agency and David Wolf. Not shown is Koichi Wakata of the Japanese Space Agency, who returns from a mission on the International Space Station. [Agencies]