Core Insights - A large number of space science experiment samples, including mice, successfully returned with the Shenzhou 21 spacecraft [1] - The experiment mice lived in the Chinese space station for nearly two weeks, which is about double the planned duration [4] - The research aims to understand the stress responses and adaptive changes of mice in space, providing scientific basis for the effects of space environments on living organisms [4] Group 1: Experiment Samples - The returned samples include nine types of biological experiment samples such as mice, zebrafish, and macrophages [1] - Various material samples were also included, such as tungsten-hafnium alloys, soft magnetic materials, and new thermal control coatings [1] Group 2: Research and Development - The entire process of feeding and caring for mice in space has been successfully established, laying a solid foundation for future large-scale mammal cultivation and research in space [6] - The research on mice is expected to help understand potential impacts on humans in microgravity, including effects on muscles and bones [6]