Space Shuttle Endeavour's Final Flight [PHOTOS]

The final flight of the space shuttle Endeavour, STS-134, marks the next-to-last flight of the Space Shuttle program. Commander Mark Kelly's wife, Arizona congresswoman Gabrielle Giffords, was critically wounded in a January shooting. Kelly resumed training in February for the flight and is hopeful Giffords will be able to travel to Florida for the launch. The six-man crew will visit the International Space Station during a scheduled 15-day flight.

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The Journey of Endeavour

Photographers prepare remote controlled cameras near the space shuttle Endeavour April 28, 2011 at Kennedy Space Center in Florida as preparations are under way for an April 29 launch of Endeavour, which will be its last flight.

Stan Honda, AFP/Getty Images

AFP

The Journey of Endeavour

The space shuttle Endeavour April 28, 2011 at Kennedy Space Center in Florida as preparations are under way for an April 29 launch of Endeavour, which will be its last flight. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

The Journey of Endeavour

A photographer carries equipment for his remote controlled cameras near the space shuttle Endeavour April 28, 2011 at Kennedy Space Center in Florida as preparations are under way for an April 29 launch of Endeavour, which will be its last flight. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

The Journey of Endeavour

The space shuttle Endeavour sits on Pad 39A April 28, 2011 at Kennedy Space Center in Florida as preparations are under way for an April 29 launch of Endeavour, which will be its last flight. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

The Journey of Endeavour

The NASA logo on a protective box for a camera near the space shuttle Endeavour April 28, 2011 at Kennedy Space Center in Florida as preparations are under way for an April 29 launch of Endeavour, which will be its last flight. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

The Journey of Endeavour

CAPE CANAVERAL, FL - APRIL 28: Romeo Guzman places cameras prior to tomorrow's Space Shuttle launch at the John F. Kennedy Space Center on April 28, 2011 in Cape Canaveral, Florida. NASA continues to prepare for the last trip to orbit of Space Shuttle Endeavour launching on April 29. (Photo by Roberto Gonzalez/Getty Images)

The Journey of Endeavour

CAPE CANAVERAL, FL - APRIL 28: Photographers and observers place their cameras at the base of the Space Shuttle Endeavor in advance of tomorrow's launch at the John F. Kennedy Space Center on April 28, 2011 in Cape Canaveral, Florida. NASA continues to prepare for the last trip to orbit of Space Shuttle Endeavour launching on April 29. (Photo by Roberto Gonzalez/Getty Images)

The Journey of Endeavour