Expedition 3 was a mission to the International Space Station (ISS) that took place from December 2001 to June 2002. It was part of a series of missions aimed at building and maintaining the ISS. The crew included astronauts from NASA and Roscosmos, who conducted scientific research and performed maintenance tasks during their stay. The mission lasted approximately 123 days, during which the crew conducted over 30 experiments in various fields, including biology and materials science. Expedition 3 also involved spacewalks to install new equipment and perform repairs, contributing to the ongoing development of the ISS as a platform for international cooperation in space exploration.