NASA
NASA Astronomy Picture of the Day 7 January 2023: 2 Space Stations in Earth Orbit
The International Space Station (ISS), which is the largest modular space station in low Earth orbit was launched back on 20 November 1998. Since then, the ISS has been occupied by astronauts carrying out multiple experiments. Now, China has built its own space station named Tiangong on 29 April 2021. It is lying in low Earth orbit between 340 and 450 km above the surface of the Earth. NASA's Astronomy Picture of the Day represents these two Space Stations in low Earth orbit in a spectacular presentation with a starry background.