Shenzhou-23 crew tests upgraded mass measurement device in space

The Shenzhou-23 crew has conducted tests on an upgraded in-orbit mass measurement device aboard China’s Tiangong space station, according to multiple reports including ecns.cn and the China Manned Space Agency (CMSA). The three astronauts—mission commander Zhu Yangzhu, pilot Zhang Zhiyuan, and payload specialist Lai Ka-ying—completed the experiments as part of a year-long mission aimed at advancing understanding of long-duration space travel. The tests involved collecting biomechanical and neuroergonomic data to study how microgravity affects human physiology and cognitive functions, as detailed in ecns.cn and friendsofnasa.org.

During musculoskeletal loading studies, the crew performed plantar pressure measurements, biomechanical testing, and muscle-tendon characterization while conducting running and resistance exercises, according to ecns.cn. Neuroergonomic experiments using near-infrared brain imaging equipment further explored how prolonged spaceflight alters cognitive control and neural performance. The data gathered will inform future missions, particularly those involving extended stays in space, as noted in friendsofnasa.org.

The Shenzhou-23 mission, launched on May 24, 2026, is the first to test a single crew member’s ability to remain aboard the space station for a full year. This unprecedented experiment, outlined in cislunarspace.cn and english.cctv.com.cctvcontent.com, aims to establish a multi-system, multi-omics atlas of human adaptation to space. One crew member will transition to the upcoming Shenzhou-24 mission, creating China’s first continuous year-long residency. The CMSA emphasized that this trial places “significantly higher demands” on astronauts’ physical and mental resilience, requiring enhanced training in physiological functions, psychological endurance, and crew compatibility, as reported in english.cctv.com.cctvcontent.com.

The crew has also engaged in over 100 science and technology projects across fields such as space life sciences, materials science, and microgravity fluid physics. These include cultivating rice seeds in orbit to study genetic stability under microgravity, experimenting with perovskite solar cells to assess performance in extreme conditions, and analyzing biological phase separation to understand lipid metabolism. Additionally, the astronauts installed a Hong Kong-developed climate monitoring instrument called the Tianyun Camera, which tracks carbon dioxide and methane concentrations to support global environmental research, as reported by dimsumdaily.hk.

Health monitoring remains a central focus. Regular exercise regimens, cardiovascular assessments, and bone density measurements are conducted to counteract microgravity’s effects. The crew also tested an upgraded body mass measurement device, a critical tool for tracking physiological changes. Routine maintenance of the space station’s systems, including fluid physics experiments and extravehicular activities, ensures the station’s operational readiness. The mission’s scope reflects China’s broader goals of advancing space medicine, materials science, and long-duration human exploration, as outlined in english.cctv.com.cctvcontent.com.

The Shenzhou-23 crew’s work builds on previous six-month stays, such as those by the Shenzhou-21 team, which spent 204 days in orbit. However, the year-long experiment represents a new frontier, with implications for future lunar bases and deep-space missions. As the astronauts approach their 50th day in space, their findings will contribute to a growing body of research on human adaptability in space, shaping the next phase of China’s space program, according to cislunarspace.cn and english.cctv.com.cctvcontent.com.