过去一周 由陈冬、陈中瑞、王杰 组成的神舟二十号乘组 在轨工作持续进行 空间站科学实验进展不断 他们具体完成了哪些工作任务呢？ 一起来了解 ↓↓↓ 上周，乘组完成了材料舱外暴露实验装置进舱、第三批实验样本回收与存储等工作。 材料舱外暴露实验旨在利用空间站舱外极端环境，揭示材料组织结构损伤、性能衰退以及功能失效与破坏的机制，推动柔性太阳翼等大型空间可展开机构材 料、空间机构润滑材料、月球基地建设材料、精密电子设备中子屏蔽材料等先进材料的空间应用。 上周，乘组完成了舱内微生物监测相关工作，通过定期对气体、表面、水系统等不同介质中的微生物进行采样，检测菌种和菌落，并对其生长状况进行评 估，可为站内微生物控制提供依据。 在航天医学实验领域，乘组使用精细动作测量仪开展了滑动测试，测试结果用于开展微重力条件下航天员精细动作控制的变化规律及适应性学习机制研究。 在微重力物理科学领域，微重力燃烧科学相关实验有序开展。燃烧室为燃烧实验提供了密闭空间，通过更换安装在燃烧室内部的实验插件，可支持气体、液 体和固体多种燃料的燃烧实验。 环境监测及站务管理工作按计划开展 完成材料舱外暴露实验装置进舱等工作 在轨多领域实（试）验有序进行 ...

Core Points - The Shenzhou 20 crew has been in orbit for two months since April 25, successfully adapting to the microgravity environment and completing multiple space science experiments and tasks [1][5][7] - The crew conducted the first-ever space regeneration experiment on planarians, exploring the effects of microgravity and radiation on their regeneration mechanisms [5] - The Shenzhou 20 crew performed their first extravehicular activity, installing a space debris protection device and conducting inspections of external equipment [5][7] Group 1 - The Shenzhou 20 crew, consisting of Chen Dong, Chen Zhongrui, and Wang Jie, met with the Shenzhou 19 crew in space, marking the sixth "space rendezvous" in China's space history [3] - The two crews completed an in-orbit handover on April 27, continuing their collaborative efforts in the Chinese space station [3] - The Shenzhou 20 crew is currently in good condition, and their various space science experiments are progressing steadily [7] Group 2 - The crew has been involved in multiple projects, including studies on trust and collaboration mechanisms, visual motion gravity characterization, and microgravity relationship cognition [7] - They utilized ultrasound diagnostics to examine blood vessels and conducted various tests related to memory, strength, and heavy object handling [7] - Research on the effects of microgravity on microorganisms, specifically Streptomyces, was also conducted, focusing on growth, differentiation, and biological activity [7]

Core Insights - The Shenzhou 20 astronaut crew, consisting of Chen Dong, Chen Zhongrui, and Wang Jie, has been successfully conducting various space science experiments for over 50 days in orbit, with all crew members in good condition [1] Group 1: Medical Experiments - The crew has completed multiple research projects in the field of aerospace medicine, utilizing equipment such as visual function measurement devices and eye trackers to conduct tests on "trust and collaboration mechanisms," "visual motion gravity characterization," "metacognitive monitoring research," and "microgravity relationship cognition" [1] - Ultrasound diagnostics were performed to examine blood vessels, collecting hemodynamic parameters under different durations in orbit for further research [3] - The crew conducted fine motor measurement tests, including memory sliding tests, strength tests, and heavy object tests, to accumulate data on the changes in fine motor control and cognitive mechanisms under microgravity conditions [3] Group 2: Biological and Physical Experiments - Research on the effects of microgravity on microorganisms is ongoing, focusing on the growth, development, differentiation, and biological activity of Streptomyces, as well as population succession changes and mechanisms [4] - The crew utilized a scientific glovebox to collect liquid culture samples, which were then frozen for return to Earth [4] - In the physical domain of microgravity, the crew completed maintenance tasks such as replacing sampling covers in the combustion cabinet and cleaning the container-free cabinet [4] Group 3: Health Monitoring - The Shenzhou 20 crew conducted traditional Chinese medicine diagnostics, 12-lead electrocardiograms, and dynamic blood pressure monitoring, while also engaging in physical exercise to counteract the physiological effects of weightlessness [6]