NASA Prepares For Launch Of Space Shuttle Endeavour

CAPE CANAVERAL, FL - JULY 15: STS-127 astronauts (L to R) Dave Wolf, Christopher Cassidy,Tom Marshburn, Tim Copra, Canadian Julie Payette, Pilot Doug Hurley and Commander Mark Polansky pose for photographs after walking out of the operations and checkout building hours before Shuttle Endeavour is schedule to launch at Kennedy Space Center July 15, 2009 in Cape Canaveral, Florida. More than a month behind schedule due to hydrogen leaks and bad weather, Endeavour is supposed to deliver the final components of the Japan Aerospace Exploration Agency's Kibo laboratory to the International Space Station. (Photo by Chip Somodevilla/Getty Images)

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