Explaining The Universe on Instagram: "The International Space Station (ISS) is a large, modular space laboratory that orbits Earth about 400 km above the surface. Built through the cooperation of multiple space agencies—including NASA (United States), Roscosmos (Russia), JAXA (Japan), ESA (Europe), and CSA (Canada)—it has been continuously inhabited by astronauts and cosmonauts since 2000. The ISS serves as a microgravity research platform where scientists study biology, physics, medicine, mate