How do different nations work together on the ISS? The International Space Station is a structure of national modules built by America, Canada, Japan, the EU and Russia. Listen in as NASA astronaut Shannon Walker, who was on the ISS at the time, tells StarTalk Radio host Neil deGrasse Tyson how working in different national modules isn’t such a foreign concept. If you like this track, be sure to check out the whole “The International Space Station: A Space Age Cathedral” episode at http://www.startalkradio.net/show/the-international-space-station-a-space-age-cathedral/.