版式设计：张丹峰 陈冬 陈中瑞 王杰 4月23日上午，神舟二十号载人飞行任务新闻发布会在酒泉卫星发射中心召开，中国载人航天工程办公 室副主任、中国载人航天工程新闻发言人林西强介绍了本次任务的相关情况。 经任务总指挥部研究决定，瞄准北京时间4月24日17时17分发射神舟二十号载人飞船，飞行乘组由陈 冬、陈中瑞、王杰组成，陈冬担任指令长。航天员陈冬执行过神舟十一号、神舟十四号载人飞行任务， 时隔两年再次担任指令长。陈中瑞和王杰均来自我国第三批航天员，是首次执行飞行任务。其中，陈中 瑞入选前是空军飞行员，王杰入选前是航天科技集团有限公司空间技术研究院的工程师。 看点一 将与神舟十九号乘组完成在轨轮换，开展空间科学与应用实（试）验 神舟二十号发射窗口时间恰逢第十个"中国航天日"。此次任务是空间站应用与发展阶段第五次载人飞行 任务，也是载人航天工程第三十五次飞行任务。任务主要目的是：与神舟十九号乘组完成在轨轮换，在 空间站驻留约6个月，开展空间科学与应用实（试）验，实施航天员出舱活动及货物进出舱，进行空间 碎片防护装置安装、舱外载荷和舱外设备安装与回收等任务，开展科普教育和公益活动，以及空间搭载 试验，持续发挥空间站综 ...

Core Points - The Shenzhou-20 manned spacecraft is scheduled for launch on April 24 at 17:17, marking a significant milestone in China's manned spaceflight program [1] - China has successfully conducted 20 extravehicular activities (EVAs) to date, demonstrating a transition from technical validation and simple operations to complex task execution [3][5] Summary by Categories Technical Validation - The EVAs have validated key technologies such as spacesuits, airlocks, robotic arms, and ground support systems [3] - The longest single EVA duration has reached 9 hours, setting a world record [5] Assembly and Maintenance - Extravehicular assembly tasks have included the installation of external pump groups, payload exposure platforms, and cross-module cable connections, achieving the complete design functionality of the space station [3] - The first EVA maintenance was conducted to repair damage to the solar wing cables caused by space debris, restoring power generation capabilities [3] Active Protection - To ensure the long-term safety of the space station, proactive measures against space debris have been implemented, including inspections and the installation of debris protection devices [3][5] Overall Capability - China's EVA technology has matured, reaching an internationally advanced level, with the spacesuits performing well beyond their design specifications [5] - The collaboration between ground and space support systems has improved, providing effective professional support for EVA planning, process control, and emergency response [5]