Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A joint project between five participating space agencies, the American NASA, the Russian RKA, the Japanese JAXA, the European ESA, and the Canadian CSA, ISS is a habitable artificial satellite in low Earth orbit. The ISS consists of pressurized modules, external trusses, solar arrays and other components. The ISS serves as a microgravity and space environment research laboratory in which crew members conduct experiments in biology, human biology, physics, astronomy, meteorology and other fields. Learn more about one of the most important scientific laboratories in the history of space exploration, the International Space Station, its operators, on-bord instruments in the following pages.