The International Space Station is exactly that — international. It is a partnership of five space agencies from 15 countries who contributed different parts to make up the ISS, which are still owned by the respective partner, and we all help to continuously operate the station 24 hours a day, seven days a week, 365 days a year. The space station is composed of parts provided by the United States, Russia, Japan, Canada, and the countries comprising the European Space Agency.