ISS stands for the International Space Station, a habitable artificial satellite that orbits Earth. It serves as a space environment research laboratory where scientific research is conducted in astrobiology, astronomy, meteorology, physics, and other fields. The ISS is a collaborative project involving multiple countries, including the United States, Russia, Europe, Japan, and Canada. It has been continuously inhabited by astronauts since November 2000 and plays a crucial role in advancing our understanding of space and improving life on Earth.