China launches Shenzhou-23 for year-long spaceflight experiment

China launched its Shenzhou-23 crewed spacecraft on Sunday from the Jiuquan Satellite Launch Center, sending three astronauts — including the first from Hong Kong to join a Chinese mission — into orbit to conduct a year-long experiment on long-duration spaceflight, according to state media reports.

Launch and crew details

The spacecraft blasted off at 11:08 p.m. Beijing time from the facility in northwestern China, state media reported. The crew comprises commander Zhu Yangzhu alongside astronauts Zhang Zhiyuan and Li Jiaying, with Chinese authorities noting that one member hails from Hong Kong — marking the first time an astronaut from the semi-autonomous region has joined a Chinese crewed mission.

Year-long experiment

A key objective involves a year-long orbital stay experiment focusing on one crew member to examine the physical and psychological effects of extended space travel. Officials stated that the findings will inform improvements in astronaut healthcare, life-support systems and operational planning for future deep-space exploration missions.

Chinese space authorities described the initiative as a critical milestone in understanding human adaptation to long-duration stays beyond Earth. The mission will also conduct scientific experiments and technology testing aboard the Tiangong space station, including China’s first space-based human body research initiative.

Space station rotation

The Shenzhou-23 crew is set to replace the current Tiangong occupants, who have spent more than 200 days in orbit and are approaching a national record for continuous crewed spaceflight. China has accelerated its space program in recent years, positioning Tiangong as a central platform for advanced research and future lunar exploration efforts.