The International Space Station is another joint project, between five space agencies: NASA, Roscosmos, JAXA, the ESA and the CSA. A station in low-Earth orbit, it has allowed astronauts to spend time and conduct experiments in space since commencing operations in 2000. It’s a remarkable collaboration between peers, and has been invaluable in advancing not only the study of microgravity, but of conditions on the Earth below.

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10 NASA achievements that are awesome – CNET