EndeavourThe space shuttle Endeavour sat on Launch Pad 39A as a storm passed prior to the rollback of the Rotating Service Structure, Thursday, April 28, 2011, at Kennedy Space Center in Cape Canaveral, Fla.

Endeavour launches on the STS-134 mission on Friday, April 29 at 3:47 p.m. EDT. During the 14-day mission, Endeavour and the STS-134 crew will deliver the Alpha Magnetic Spectrometer and spare parts including two S-band communications antennas, a high-pressure gas tank.
Image Credit: NASA/Bill Ingalls

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