Global Politics Explainer

CWA # 1729
Global Politics Explainer
Shenzhou-19 Mission: A Profile

Gauri Gupta
25 June 2025

Photo Source: Xinhua/Global Times

In April, the Shenzhou-19 mission astronauts safely landed near the Jiuquan Satellite Launch Center. This was China’s 14th crewed space mission, and the 8th mission for the Tiangong space station, where they conducted the longest spacewalk and science experiments.  This mission aboard a Long March 2F rocket docked Tiangong's Tianhe core module. The three member crew of the mission - Commander Cai Xuzhe, and the two first taikonauts, Song Lingdong and Wang Haoze, were on six-month mission. This duration provided China with long-term experience in Low Earth Orbiting.

What did the Shenzhou-19 mission achieve? 
First, the extravehicular work. Cai Xuzhe and Song Lingdong carried out a record-breaking 9-hour 6-minute spacewalk on 17 December 2024 and two further outings in January and March 2025. According to available reports, they were installing debris shields, photographing the hull, and validating the long-duration performance of the Feitian spacesuit, giving China more than 24 hours of fresh EVA experience in one flight.

Second, a brief note on pthe roject’s space science and technology. The crew conducted breeding experiments on three generations of fruit flies under near-zero magnetic fields, vascular ultrasound mapping, hearing and vision monitoring. According to reports, a new astronaut health system was established that combines traditional Chinese and Western diagnostics. They also studied protein crystal growth, soft matter dynamics, and a brick sintered from simulated lunar soil mounted outside Tiangong to test vacuum, radiation, and micrometeoroid effects. The crew also packed 102 biological and material specimens for return.

What is the significance of the Shenzhou-19 mission?
First, China’s effort to find an alternative to the West-led International Space Station (ISS). The ISS is scheduled to retire in 2030. This would make China's Tiangong the only crewed space lab in orbit. Currently, they are already hosting United Nations-approved science experiments and plan on hosting astronauts from countries like Pakistan, Egypt, and Kenya. The Shenzhou 19 mission helped demonstrate that Tiangong can be staffed, do real science, and be safe, validating itself as a strong alternative. 

Second, China’s experiments for S&T development. It has carried out several cutting-edge research projects in quantum physics, biology, material tests, artificial photosynthesis, and robotics. It has broken the record for a nine-hour spacewalk and returned over 100 samples, showing China’s emerging operation in space. The world’s first orbit-based spinor Bose–Einstein condensate is another achievement of this mission.

References
Andrew Jones, "China’s Shenzhou-19 astronauts return to Earth after six-month mission," Space News, 30 April 2025.
Mike Wall, "China's Shenzhou 19 astronauts return to Earth after 6 months aboard Tiangong space station," Space.com, 30 April 2025
Deng Xiaoci, "Shenzhou-19 crew successfully completes second series of extravehicular activities," Global Times, 21 January 2025
Andrew Jones, "Shenzhou-19 astronauts complete third spacewalk, install final debris shielding on Tiangong," Space News, 24 March 2025.

About the author
Gauri Gupta is a post-graduate student in the Department of International Studies at Stella Maris College, Chennai.

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