Explanation:

International Space Station (ISS)

 The International Space Station (ISS) is a multi-nation construction project that is the largest single structure humans ever put into space.

 Its main construction was completed between 1998 and 2011, although the station continually evolves to include new missions and experiments. It has been continuously occupied since Nov. 2, 2000.

 The ISS is not owned by one single nation and is a “co-operative programme” between Europe, the United States, Russia, Canada and Japan.

 The mission of the International Space Station is to enable long-term exploration of space and provide bene fi ts to people on Earth.

With six state-of-the-art laboratories, the Space Station will be the premiere research facility in space, four times larger and more capable than any previous space station. It is hoped that it will allow for advancements in medicine, technology and science. Tiangong

 Tiangong is a space station that the Chinese Manned Space Agency (CMSA) is building in low Earth orbit.  In May 2021, China launched Tianhe, the fi rst of the orbiting space station’s three modules, and the country aims to fi nish building the station by the end of 2022.

 CMSA hopes to keep Tiangong inhabited continuously by three astronauts for at least a decade. The space station will host many experiments from both China and other countries.

 Tiangong, which means “Heavenly Palace,” will consist of Tianhe, the main habitat for astronauts, and two modules dedicated to hosting experiments, Mengtian and Wentian, both of which are due to launch in 2022.

 Shenzhou spacecraft, launching from Jiuquan in the Gobi Desert, will send crews of three astronauts to the space station, while Tianzhou cargo spacecraft will launch from Wenchang on the Chinese island of Hainan to deliver supplies and fuel to the station.