A space station is a large structure in orbit around the Earth where astronauts live and work. It serves as a home and a laboratory for scientific research in space. The most famous space station is the International Space Station (ISS), which is a collaboration between several countries, including the United States, Russia, and Japan. On a space station, astronauts conduct experiments that can only be done in microgravity, such as studying how plants grow in space or testing new technologies. The station is equipped with solar panels for energy and has systems to recycle air and water, making it a self-sustaining environment for long missions.