ESA astronaut Christer Fuglesang on board Space Shuttle Discovery following undocking from the International Space Station. Fuglesang and the rest of the STS-116 crew spent 8 days docked to the ISS, during which they added the P5 truss section, reconfigured the Station's electicity supply and retracted the P6 solar array, and delivered equipment and supplies. They also exchanged an Expedition 14 crew member, bringing NASA's Sunita Williams into orbit, and returning ESA astronaut Thomas Reiter to Earth.