China to double size of space station, touts alternative to NASA-led ISS

China announced plans to double the size of its Tiangong space station in the coming years, adding three more modules to its existing three. The expansion is expected to be completed by 2028, and will make Tiangong the largest space station in orbit.


The announcement was made at the 74th International Astronautical Congress (IAC) in Baku, Azerbaijan, on October 4, 2023. Zhang Qiao, deputy director of the China Academy of Space Technology (CAST), said that the expanded space station will be able to accommodate a crew of six astronauts, and will have a total mass of 180 tons.

The three new modules that will be added to Tiangong are:

·         A science module, which will be used for conducting scientific experiments in a variety of fields, including astronomy, materials science, and life sciences.

        ·         A logistics module, which will be used to store and transport supplies and equipment to and from the space station.

        ·         A habitation module, which will provide additional living and working space for the astronauts.

In addition to the three new modules, China is also planning to launch a new docking port to Tiangong in the coming years. This new docking port will allow the space station to accommodate more spacecraft, including visiting vehicles from other countries.

China's expansion of Tiangong is a significant development in the global space program. Tiangong is already the only space station in orbit that is not part of the International Space Station (ISS). China's decision to double the size of Tiangong is seen by many as a sign that China is serious about becoming a major space power.

The expansion of Tiangong will have a number of benefits, including:

·         Increased scientific research capabilities: 

The new science module will provide astronauts with more space and equipment to conduct scientific experiments. This will allow China to expand its research in a variety of fields, including astronomy, materials science, and life sciences.

·         More living and working space for astronauts: 

The new habitation module will provide astronauts with more space to live and work. This will improve the quality of life for astronauts on long-duration missions.

·         Ability to accommodate more spacecraft: 

The new docking port will allow Tiangong to accommodate more spacecraft, including visiting vehicles from other countries. This will make it easier for China to collaborate with other countries on space missions.

The expansion of Tiangong also has some potential implications, including:

·         Increased competition between the United States and China: 

The expansion of Tiangong is seen by many as a sign that China is serious about becoming a major space power. This could lead to increased competition between the United States and China in the space sector.

·         Potential for militarization of space:

 Some experts have expressed concerns that the expansion of Tiangong could lead to the militarization of space. China has been developing a number of new space technologies, including anti-satellite weapons. This has raised concerns that China could use its space program to militarize space.

Overall, the expansion of Tiangong is a significant development in the global space program. It will increase China's scientific research capabilities, provide more living and working space for astronauts, and make it easier for China to collaborate with other countries on space missions. However, the expansion of Tiangong also has the potential to increase competition between the United States and China, and lead to the militarization of space.

China's Tiangong space station and the International Space Station (ISS)

China's Tiangong space station is the only space station in orbit that is not part of the International Space Station (ISS). The ISS is a joint project between the United States, Russia, Canada, Japan, and Europe. China has not been invited to participate in the ISS program due to political concerns.

The expansion of Tiangong will make it the largest space station in orbit. Tiangong is expected to be operational for at least 15 years, while the ISS is scheduled to be retired in 2030. This means that Tiangong could become the primary space station in orbit after the ISS is retired.

China has said that it is open to international collaboration on the Tiangong space station. However, it is unclear how much collaboration will be possible due to political concerns.

The future of Tiangong

 The future of Tiangong is bright. China has ambitious plans for the space station, and it is expected to play a major role in the global space program in the coming years.

China plans to use Tiangong as a base for conducting scientific research, developing new space technologies, and launching missions to the Moon and Mars. The expansion of Tiangong will increase its capabilities in all of these areas.

China is also open to international collaboration on the Tiangong space station. This could lead to new joint scientific research projects, new space technology development projects, and new missions to the Moon and Mars.

Here are some specific examples of how Tiangong could be used in the future:

·         Scientific research: 

Tiangong could be used to conduct a wide range of scientific research experiments, including in the fields of astronomy, materials science, and life sciences. The new science module will provide astronauts with more space and equipment to conduct experiments.

·         Technology development: 

Tiangong could be used to develop new space technologies, such as new spacecraft, new propulsion systems, and new life support systems. The new science module will also provide astronauts with more space to develop and test new technologies.

·         Lunar and Mars missions: 

Tiangong could be used as a base for launching missions to the Moon and Mars. The new logistics module will provide astronauts with more space to store and transport supplies and equipment for these missions.

Overall, the future of Tiangong is very promising. It is expected to play a major role in the global space program in the coming years.

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