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nearly 400 kilometers above the earth s surface, the international space station continues its orbit, where it has been every day for the last 16 years. a six-person crew lives onboard. their official titles are astronaut or cosmonaut, but their day job is really scientist. at its core, the iss is a science laboratory. there are experiments that help us understand earth and space, of course, but also the human body and medicine. there are parts of the vibration isolation stabilization system, they re kind of little shock absorbers.