Expedition 5 was a mission to the International Space Station (ISS) that took place from April to October 2002. It was part of the International Space Station program and involved a crew of three astronauts: Valery Korzun, Peggy Whitson, and Sergei Treschev. The mission focused on scientific research and technology demonstrations in microgravity. During their time on the ISS, the crew conducted various experiments in fields such as biology, physics, and materials science. They also performed maintenance tasks and participated in educational outreach activities to engage the public in space exploration.