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What is the primary purpose of the ISS?

The primary purpose of the International Space Station (ISS) is to serve as a microgravity and space environment research laboratory where scientific research is conducted in astrobiology, astronomy, meteorology, physics, and other fields. The ISS provides a unique platform for conducting experiments that require or benefit from the low-gravity environment, which cannot be replicated on Earth. Research on the ISS includes life sciences, materials science, and fundamental physics, aiming to improve our understanding of biological processes and develop new technologies. The ISS also facilitates international cooperation in space exploration, involving multiple countries and space agencies.