4 月 30 日晚，北京，工作人员对从中国空间站返回的生命类科学实验样品进行状态检查确认。（中国科 学院空间应用中心 供图） 4 月 30 日晚，北京，工作人员对从中国空间站返回的生命类科学实验样品进行状态检查确认并称重。 （中国科学院空间应用中心 供图） 记者从中国载人航天工程空间应用系统总体单位——中国科学院空间应用工程与技术中心（空间应 用中心）获悉，中国空间站第八批空间科学实验样品4月30日中午随神舟十九号飞船顺利返回地球，本 次返回科学实验样品涉及空间生命科学、空间材料科学、空间新技术等领域的25项实验项目，总重量约 37.25公斤。 因生物活性要求，空间生命类科学实验样品第一时间从着陆场转运至北京中国科学院空间应用中 心。4月30日晚，中国科学院空间应用中心对返回的生命类科学实验样品进行状态检查确认后，交付给 科学家开展后续研究。 中国科学院空间应用中心介绍，本次返回生命类样品主要包括骨细胞和成骨细胞、人诱导多能干细 胞、人支气管上皮细胞、人和动物早期胚胎、蛋白样品及果蝇等20类，是中国空间站应用与发展阶段下 行生物样品种类和涉及实验项目最多的一次。 科学家将对返回样品开展形态检测、细胞谱系分析、 ...

Core Insights - The successful return of the eighth batch of space science experiment samples from the Chinese space station on April 30, 2023, marks a significant achievement in space research, involving 25 experimental projects across various fields including space life sciences, materials science, and new technologies, with a total weight of approximately 37.25 kilograms [1][3] Group 1: Space Life Sciences - The returned life science samples include 20 categories such as bone cells, induced pluripotent stem cells, bronchial epithelial cells, early embryos of humans and animals, protein samples, and fruit flies, representing the largest variety of biological samples and experimental projects to date from the Chinese space station [3][5] - Research will focus on mechanisms of bone loss in microgravity, characteristics of 3D growth of stem cells in space, effects of space radiation on cancer, and the impact of space environments on early embryonic development [5][7] Group 2: Space Materials Science - The materials science samples, which will be transported back to Beijing, consist of 22 types across 4 categories, including tungsten-based ultra-high temperature alloys, high-strength steel, nonlinear optical crystals, indium selenide semiconductor crystals, lunar soil reinforcement materials, and gel composite lubricants [5][7] - The research aims to analyze the effects of microgravity on material growth, segregation, solidification defects, and performance, providing technical support for the design of new high-performance alloys and large-size high-performance crystals [7]