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SPACE SHUTTLE

Space Shuttle Atlantis lifting off in September 2006. Atlantis was the last shuttle to fly; the program ended in 2011. (AP Photo/Dr. Scott M. Lieberman)

Space Shuttle Atlantis lifts off from pad 39b at the Kennedy Space Center in Cape Canaveral, Fla. on Saturday, Sept. 9, 2006. … Read more

Space Shuttle Atlantis lifts off from pad 39b at the Kennedy Space Center in Cape Canaveral, Fla. on Saturday, Sept. 9, 2006.