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The weather was perfect, and the liftoff was nearly flawless. Watch the Kennedy Space Center video below. You may hear chatter about alarms going off in the cockpit. It's believed to be a bad sensor with no impact. For more on this mission, and weather criteria for The Space Shuttle, click here.
In this image:
Space Shuttle Atlantis lifts-off from the Kennedy Space Center at Cape Canaveral, Fla. Monday May 11, 2009. Atlantis' seven member crew will repair and deliver new instruments to the Hubble Space Telescope.
(AP Photo/Marta Lavandier)