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Tiangong space station

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The Tiangong space station is a permanently crewed laboratory in low Earth orbit.

Estação Espacial Chinesa Sobrevoando Jundiaí
Estação Espacial Chinesa Sobrevoando Jundiaí

Operated by the China Manned Space Agency (CMSA), it serves as a platform for scientific and technological innovation. The station is a modular complex, meaning it is built from separate parts that dock together in space. This design allows for complex assembly and future expansion. Currently, Tiangong is one of only two operational space stations in human history. Its pressurized volume is slightly over one third the size of the International Space Station (ISS).

Rear view of Tiangong Space Station
Rear view of Tiangong Space Station

Tiangong functions through a sophisticated modular mechanism. Unlike first-generation stations, which were single-module outposts, Tiangong is a third-generation modular station. This means multiple components are launched separately and assembled in orbit. This method improves reliability and reduces development costs. The station relies on the Chinese Docking Mechanism to connect its parts. This system is based on the APAS-89/APAS-95 technology developed by NASA and Russia. Once docked, the modules create a single, pressurized environment for the crew.

Tiangong expansion
Tiangong expansion

The station is currently composed of three primary modules. The Tianhe core module is the central hub. It houses the guidance, navigation, and orientation control systems. It also provides life support, main power, and propulsion for the entire station. The Tianhe module includes living quarters for three crew members, a kitchen, and a toilet.

Tianhe Core Module Rendering 01
Tianhe Core Module Rendering 01

The Wentian laboratory module was launched on 24 July 2022. It provides backup life support and includes an airlock for extravehicular activities (EVAs). The Mengtian laboratory module launched on 31 October 2022. It features a dedicated cargo airlock for transferring scientific payloads.

Mengtian launch
Mengtian launch

China developed Tiangong through a planned multi-step process. This is known as the "Third Step" of the China Manned Space Program. The agency gained vital experience from two earlier precursors, Tiangong-1 and Tiangong-2. These earlier labs helped test docking and resupply technologies. The construction of the permanent station began with the launch of Tianhe on 29 April 2021.

Tianhe before launch (cropped)
Tianhe before launch (cropped)

Following the core module, the Wentian and Mengtian modules were added to complete the initial three-module configuration in 2022. Plans exist to expand the station to six modules starting in 2027.

Wentian Lab Module
Wentian Lab Module

Scientific research is the primary mission of the station. CMSA has tentatively approved over 1,000 experiments to be conducted in orbit. The station contains 23 experimental racks within its pressurized environment.

Basic space experiment cabinet of Tiangong space station
Basic space experiment cabinet of Tiangong space station

These racks allow for studies in life sciences, biotechnology, and material science. For example, scientists study how rice and Arabidopsis thaliana grow in microgravity. This research helps find sustainable food sources for long-term spaceflight. The modules also allow for experiments exposed to the vacuum and solar wind of space. Wentian provides 22 external experiment adapters, while Mengtian provides 37.

Interior of Wentian
Interior of Wentian

Beyond pure science, Tiangong serves as a tool for education and outreach. The station hosts space lectures and popular science experiments. These lessons are designed to inspire students in science and technology. During the Shenzhou 13 and 14 missions, astronauts conducted lessons that included Q&A sessions with schoolchildren.

First gathering on Tiangong
First gathering on Tiangong

Additionally, the CSSARC amateur radio payload allows radio enthusiasts to communicate with astronauts. This project aims to encourage interest in science, technology, engineering, and math (STEM). It even includes digital image transmission and voice communication via the VHF/UHF bands.

Tiangong is deeply connected to broader goals of deep space exploration. By mastering rendezvous technology and regenerative life support, China builds capacity for future missions. The station also acts as a testbed for next-generation orbit transportation vehicles. CMSA is even considering the possibility of space tourism in the future. This would involve commercial activities led by the private sector to bring cost-effective innovations to space. As a permanent human presence in orbit, Tiangong helps humanity understand how to live and work far from Earth.

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🖼️ Images & Media (26)
File:Basic space experiment cabinet of Tiangong space station.jpg
Basic space experiment cabinet of...
File:Rear view of Tiangong Space Station.jpg
Rear view of Tiangong Space Station.jpg
File:HK WCN 灣仔北 Wan Chai North 香港會展 HKCEC 創科博覽 InnoTech Expo 天宮太空站 Tiangong Space Station December 2022 Px3 10.jpg
HK WCN 灣仔北 Wan Chai North 香港會展 HKCEC 創科博覽...
File:Tianhe Core Module Rendering 01.png
Tianhe Core Module Rendering 01.png
File:Tianhe before launch (cropped).png
Tianhe before launch (cropped).png
File:Wentian lab module rendering.jpg
Wentian lab module rendering.jpg
File:Wentian Lab Module.jpg
Wentian Lab Module.jpg
File:Mengtian lab module rendering.jpg
Mengtian lab module rendering.jpg
File:Mengtian Lab Module ground test.jpg
Mengtian Lab Module ground test.jpg
File:Tianhe solar array deployment.gif
Tianhe solar array deployment.gif
File:Combined robotic arm of Tiangong.jpg
Combined robotic arm of Tiangong.jpg
File:Launch of Tianhe Core Module (Cropped).jpg
Launch of Tianhe Core Module (Cropped).jpg

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