Core Insights - The successful return of the ninth batch of scientific experiment samples from the Chinese space station via the Shenzhou 21 spacecraft marks a significant achievement in space research [2] Group 1: Scientific Experiment Samples - The returned scientific experiment samples include 26 projects, comprising 9 types of life experiment samples, 32 types of material experiment samples, and 3 types of combustion experiment samples, with a total weight of approximately 46.67 kilograms [2] - Among the life experiment samples, the mouse samples will be observed for behavioral changes and physiological biochemical indicators to understand their stress responses and adaptability to the space environment [2] Group 2: Research and Development - Other life science experiment samples, such as zebrafish, goldfish algae, streptomyces, planarians, and brain organoids, along with some material and combustion experiment samples, were transported to the Chinese Academy of Sciences Space Application Engineering and Technology Center in Beijing [2] - The Space Application Center of the Chinese Academy of Sciences will inspect and confirm the status of the returned samples before handing them over to scientists for further research [2]

新华财经北京11月15日电（记者胡喆） 记者从中国科学院获悉，中国空间站第九批空间科学实验样品 随神舟二十一号飞船顺利返回。本次下行返回的科学实验样品涉及26个实验项目，包括9种生命实验样 品、32种材料实验样品和3种燃烧实验样品，总重量约46.67公斤。 （文章来源：新华社） 除实验小鼠之外，其他生命类科学实验样品如斑马鱼和金鱼藻、链霉菌、涡虫、脑类器官等，及部分材 料类、燃烧类科学实验样品，于11月15日凌晨0时40分转运至北京的中国科学院空间应用工程与技术中 心。 作为空间应用系统总体单位，中国科学院空间应用中心对返回的实验样品状态进行检查确认后，交付科 学家开展后续研究。其余的材料类、燃烧类科学实验样品后续将随神舟二十一号飞船返回舱运抵北京。 其中，小鼠实验样品着陆后，科研人员随即开展了现场处置。他们将通过观察小鼠的行为，并检测其生 理生化等关键指标，初步解析小鼠对空间环境的应激响应与适应性变化规律，为进一步理解空间环境对 生命体的影响提供科学依据。 ...

Core Points - The ninth batch of scientific experiment samples from the Chinese space station has successfully returned with the Shenzhou 21 spacecraft [1] - The returned samples include 26 experimental projects, comprising 9 types of life experiments, 32 types of material experiments, and 3 types of combustion experiments, with a total weight of approximately 46.67 kilograms [1] - The research team will analyze the behavior and physiological biochemical indicators of the returned mouse samples to understand their stress responses and adaptive changes to the space environment [1] Summary by Category Life Experiments - The life experiment samples include mice, zebrafish, and other organisms, which will be studied to provide scientific evidence on the impact of space environments on living organisms [1] - The immediate post-landing processing of mouse samples has begun, focusing on behavioral observation and physiological analysis [1] Material and Combustion Experiments - The returned samples also consist of various material and combustion experiment samples, which will be transported to the Chinese Academy of Sciences for further research [1] - The materials and combustion samples will be delivered to scientists after inspection by the Space Application Center [1]

Group 1: Space Life Science Experiments - The eighth batch of scientific samples from the Chinese space station includes 25 experimental projects, weighing approximately 37.25 kilograms, covering fields such as space life science, materials science, and new technologies [1] - The returned life science samples consist of 20 categories, including bone cells, induced pluripotent stem cells, early embryos of humans and animals, protein samples, and fruit flies, marking the largest variety of biological samples in the space station's application and development phase [1][2] Group 2: Research and Analysis Plans - Scientists will conduct morphological detection, cell lineage analysis, structural analysis, and multi-omics analysis on the returned samples, focusing on mechanisms affecting bone loss, stem cell growth in microgravity, and early embryonic development under space conditions [2] - The research results are expected to provide data and theoretical support for human health both in space and on Earth [2] Group 3: Space Materials Science Experiments - The materials science samples, which will be transported back to Beijing, include 22 types across 4 categories, such as tungsten-based ultra-high temperature alloys and high-strength steel [3] - Future analyses will investigate the effects of microgravity on material growth, composition segregation, solidification defects, and performance, supporting the design of new high-performance alloys and large-sized crystals [3] - The research aims to advance the manufacturing and application of critical materials for next-generation aerospace turbine blades, nano-electronic devices, and flexible solar sails, providing a theoretical foundation for future deep space exploration and human space activities [3]

Core Points - The eighth batch of scientific experiment samples from the Chinese space station successfully returned to Earth on April 30 with the Shenzhou 19 manned spacecraft [1] - The returned samples include 25 experimental projects related to space life sciences and space materials sciences, weighing approximately 37.25 kilograms [1] - Life science experiment samples have been delivered to scientists in Beijing, while materials science samples will be transported back to Beijing with the Shenzhou 19 spacecraft [1]