The International Space Station (ISS) is one of the most massive and complex machines humanity has ever constructed. Five space agencies came together to put it into orbit and maintain it. These were NASA, Roscosmos, the European Space Agency (ESA), the Japan Aerospace Exploration Agency (JAXA), and the Canadian Space Agency (CSA)….

Check out the original article: [Slashgear]3 Surprising Things ISS Astronauts Are Absolutely Banned From Doing