Core Points - The Shenzhou 20 mission is expected to set a new record for the longest duration of a Chinese astronaut crew in space, currently at 188 days [1] - Commander Chen Dong has become the first Chinese astronaut to exceed 400 days in space, completing six extravehicular activities, the highest number for any Chinese astronaut [1] - The crew has successfully conducted four extravehicular activities and seven payload operations, including the installation of space debris protection devices and equipment inspections [1] Space Science and Applications - The Shenzhou 20 crew has achieved significant results in various fields, including space life sciences, microgravity fundamental physics, space materials science, aerospace medicine, and new aerospace technologies [2] - Notable achievements include the production of high-quality protein crystals in space, which may provide potential targets for cancer treatment, and successfully heating tungsten alloy to 3100 degrees Celsius, setting a new record for international space materials science experiments [2] - The crew also discovered that charged colloids crystallize into long-lived metastable structures under microgravity conditions [2] Mission Preparations - The Shenzhou 20 crew is currently engaged in preparations for crew rotation and return [3]

"目前，神舟二十号航天员乘组在轨驻留已188天，有望刷新中国航天员乘组在轨驻留最长纪 录。"他介绍，目前各项工作进展顺利，3名航天员状态良好，将与神舟二十一号航天员乘组完成在轨轮 换后返回东风着陆场。 他表示，神舟二十号乘组指令长陈冬成为首个在轨驻留时间超过400天的中国航天员，已累计完成6 次出舱活动，成为目前在舱外执行任务次数最多的中国航天员。 "任务期间，乘组共进行了4次出舱活动和7次载荷进出舱任务，完成空间碎片防护装置安装、舱外 辅助装置安装、舱外设施设备巡检等任务。"张静波介绍，在舱外平台安装的脚限适配器和接口转接件 有效提高了航天员舱外作业效率，问天实验舱此前规划的空间碎片防护装置也已全部完成安装。 新华社酒泉10月30日电（记者李国利、刘艺）神舟二十号有望刷新中国航天员乘组在轨驻留最长纪 录。 10月30日上午举行的神舟二十一号载人飞行任务新闻发布会上，中国载人航天工程新闻发言人、中 国载人航天工程办公室综合计划局局长张静波这样表示。 在空间科学与应用方面，神舟二十号航天员乘组在与地面科技人员密切配合下，覆盖空间生命科 学、微重力基础物理、空间材料科学、航天医学、航天新技术等领域，取得了阶段性成 ...