"Expedition 2" refers to the second long-duration mission aboard the International Space Station (ISS), which took place from October 2001 to April 2002. This mission involved a crew of six astronauts, including Yuri Malyshev, Bill McArthur, and Soichi Noguchi, who conducted various scientific experiments and maintenance tasks on the ISS. During Expedition 2, the crew focused on research in fields such as microgravity, biotechnology, and materials science. They also performed spacewalks to upgrade the station's systems and enhance its capabilities for future missions, contributing to the ongoing development of the ISS as a platform for international collaboration in space exploration.