The International Space Station is a modular space station in low Earth orbit. It is a multinational collaborative project involving five participating space agencies: NASA, Roscosmos, JAXA, ESA, and CSA. The ownership and use of the space station is established by intergovernmental treaties and agreements.
Tiangong, officially the Tiangong space station, is a space station being constructed by China in low Earth orbit between 340 and 450 km above the surface. Being China's first long-term space station, it is the goal of the "Third Step" of the China Manned Space Program.