A view of the International Space Station from Discovery as the Space Shuttle approaches for docking. Docking of Discovery on mission STS-121 occurred at 16:52 CEST (12:52 UT). STS-121 brings supplies and equipment to the Station as well as ESA astronaut Thomas Reiter who, after entering the ISS, will join the ISS Expedition 13 crew for a six-month stay on board.