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At Launch Pad 39A, Atlantis’s payload bay doors are ready to be closed over the U.S. Laboratory Destiny (lower left). Next to it is the Canadian robotic arm, which will play a major role in moving Destiny to its place on the International Space Station. Destiny, a key element in the construction of the Space Station, is 28 feet long and weighs 16 tons. This research and command-and-control center is the most sophisticated and versatile space laboratory ever built. It will ultimately house a total of 23 experiment racks for crew support and scientific research. Destiny will be launched Feb. 7 on STS-98, the seventh construction flight to the ISS.