EARTH Aboard the Space Shuttle Discovery -- 11 Dec 2006 --- As seen through windows on the aft flight deck of Space Shuttle Discovery, the payload bay is featured in this image photographed by a STS-116 crew member during flight day three activities. Pictured in the payload bay is the shuttle's docking mechanism (foreground), Spacehab module (partially obscured), the Canadian-built Remote Manipulator System (RMS) robotic arm (right), and the Remote Manipulator System/Orbiter Boom Sensor System (left, in stowed position) -- Picture by Lightroom Photos / NASA / Topfoto