At Launch Pad 39A Atlantis's payload bay doors are ready to be closed over the U.S. Laboratory Destiny.

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