The Shenzhou-23 crew aboard China's Tiangong space station has completed the assembly, testing and installation of the Multi-Spectral Imaging Carbon Observatory (MUSICO), the station's first spaceborne greenhouse gas detector. The device will monitor carbon dioxide and methane over key regions to support global emissions tracking and climate research. The three astronauts – Zhu Yangzhu, Zhang Zhiyuan and Lai Ka-ying – also conducted microgravity experiments, station maintenance, noise exposure measurements and a series of medical checks to study the effects of spaceflight on the human body.