Expedition 13 was a mission to the International Space Station (ISS) that took place from March to September 2006. The crew consisted of Commander Pavel Vinogradov, Flight Engineer Jeffrey Williams, and Flight Engineer Thomas Reiter. Their primary tasks included conducting scientific research, performing maintenance on the ISS, and preparing for future expeditions. During their time in space, the crew completed over 200 experiments in various fields, including biology and materials science. They also welcomed visiting spacecraft, such as the Space Shuttle Discovery, which delivered supplies and new equipment to support ongoing operations on the ISS.