特朗普宣布，现任交通部长肖恩·达菲暂时担任美国国家航空航天局（NASA）局长。 美国总统特朗普9日宣布，现任交通部长肖恩·达菲暂时担任美国国家航空航天局（NASA）局长。此 前，特朗普就这一航天领域关键职位人选突然"变卦"，撤销对美国企业家马斯克密友的提名，此事一度 成为双方"口水仗"的焦点话题。 特朗普9日在社交媒体上发文说，达菲在处理国家交通事务方面表现出色，相信即便只是短期执掌 NASA，他也将成为一名"出色的领导者"。 特朗普去年12月提名美国富豪贾里德·艾萨克曼接任NASA局长。今年5月31日，即白宫为结束"特殊政府 雇员"任期的马斯克举行"欢送会"的次日，特朗普宣布撤回对艾萨克曼的提名。特朗普称，新的提名 人"要在太空实现'美国优先'的目标"。 特朗普本月6日表示，NASA作为马斯克企业的重要合作方，如果局长由其密友担任，这"极为不妥"。 艾萨克曼9日在社交媒体上发文，称"NASA需要受总统信任的领导者"。媒体报道说，艾萨克曼的表态 释放出试图化解矛盾的信号。 在特朗普政府推行的大规模精简政府机构和裁减政府工作人员计划下，美国航天工业面临裁员和预算削 减的压力。据路透社9日报道，特朗普政府正通过提 ...

2025年6月25日，欧盟委员会公布了欧盟《空间法案》提案，这是首次尝试在超国家层面规范空间经 济。欧盟委员会的这一举措基于 2024 年的德拉吉报告，该报告强调空间对于向公民提供基本服务以及 确保欧盟的安全至关重要，并呼吁采取行动解决削弱欧盟在空间产业竞争力的问题：资金投入不足、市 场碎片化、对外依赖以及治理安排低效。 而跨境合作在航天工业中是常态，这会增加企业的成本，并可能抑制航天经济的发展；另一方面，缺乏 关于安全和环境可持续性的共同标准可能会引发成员国之间的监管竞争，并导致监管水平下降。 欧盟《太空法案》所选择的法律依据会对监管技术以及拟议立法的内容产生影响。该提案符合欧盟法 律"法案化"的趋势，这一趋势在欧盟委员会 2019 - 2024 年优先计划中兴起，并在数字单一市场背景下 尤为突出，其中包括《数据治理法案》、《数字服务法案》（DSA）、《数字市场法案》（DMA）、 《数据法案》和《人工智能法案》。它们的先驱通常被认为是GDPR。 法案化意味着通过法规而非指令来实现协调统一。主要优势在于法规可以直接适用，无需在国家法律中 实施：这节省了时间，并允许更大程度的统一性。然而，欧盟的"法案"往往并未 ...

Core Viewpoint - The article emphasizes the significant advancements in 3D printing technology, particularly in the aerospace sector, driven by high-performance polymer materials that meet stringent requirements for weight reduction, stability under extreme conditions, and cost efficiency [2][4]. Group 1: 3D Printing in Aerospace - The global space race is intensifying, with both public and private sectors striving to innovate in this new frontier [2]. - Aerospace materials must be lightweight to reduce launch costs while maintaining stability under extreme temperatures, radiation, and mechanical loads [2]. - Traditional manufacturing methods face challenges such as long production cycles, high costs, and limited design flexibility, primarily relying on metal and composite materials [2]. Group 2: Advantages of High-Performance Polymers - Recent advancements in 3D printing technology have demonstrated unique advantages in shortening development cycles and manufacturing complex structures [2]. - High-performance polymers and composites, such as carbon fiber composites, PEEK, and PEKK, are preferred for their ability to achieve a balance between lightweight and performance, as well as for their cost control throughout the lifecycle [2]. - Benefits of these materials include weight reduction in aircraft components, insulation, optimized airflow, reduced fuel consumption, increased range, fire resistance, and non-toxic properties [2]. Group 3: Upcoming Forum - Zhao Yunfeng, a researcher from the Aerospace Materials and Process Research Institute, will present on "3D Printing of High-Performance Polymer Materials and Their Aerospace Applications" at the 2025 (Fourth) Polymer 3D Printing Materials Summit Forum [5]. - The forum is scheduled for July 18-20, 2025, in Hangzhou, Zhejiang, and aims to facilitate industry exchanges on the latest advancements in polymer materials and 3D printing technologies [5][10].

【文/观察者网专栏作者 陈蓝】 中国和拉美的合作乘着5月中拉论坛（中国－拉美和加勒比国家共同体论坛第四届部长级会议）的东 风，迈上了新的台阶。双方制定了一个共同行动计划，其中包括了加强航天领域合作，共同举办中拉北 斗合作论坛和共建中拉北斗应用合作发展中心的议题。 关心中拉航天合作的读者可能还记得一条旧闻。去年在武汉举办了首届"中国-拉美和加勒比国家航天合 作论坛"。当时签署的《武汉宣言》中，七条倡议全面覆盖了信息分享、通导遥应用、人才培养和文化 交流、深空探索、科研合作、国际协调等领域。 那么，中拉航天合作的背景是什么？为什么现在会走向全面合作？这对未来意味着什么？ 大部分读者可能对拉美航天相当生疏。所以，在回答这些问题前，很有必要先了解下历史。 先说下拉美即拉丁美洲的定义。它指的是南北美洲美国以南所有地区，包括中美洲、西印度群岛和南美 洲，共33个国家和地区；北有墨西哥湾和加勒比海，南北全长11000多公里，面积2070万平方公里，人 口6.5亿，主要为印欧及黑白混血种人、黑人、印第安人和白种人。该地区西班牙语占统治地位，其次 是葡萄牙语和法语，均属拉丁语系，因此被称为拉丁美洲。 在很多人的印象中，南美是一 ...

Group 1 - The establishment of a cold chain logistics network in China, described as a "four horizontal and four vertical" backbone channel network, aims to enhance the efficiency of logistics and improve market access for perishable goods [5] - The first batch of pilot cities for retail innovation and enhancement has been announced, indicating a push towards modernizing the retail sector [9] - The China Export-Import Bank has issued 460 billion yuan in loans to the foreign trade sector in the first five months, reflecting strong support for international trade [9] Group 2 - The construction of a modern industrial system is being accelerated in Jiangxi province, which is part of broader efforts to reform and develop the local economy [7] - The initiative "Two New" is being implemented in rural areas to stimulate new consumption vitality, indicating a focus on rural market development [4] - The completion of the concrete pouring for the central tower of the Xinjiang Qitai radio telescope project signifies advancements in scientific infrastructure [9]

6月8日周日《新闻联播》要闻21条 智通财经6月8日电，今天《新闻联播》主要内容有： 17、美航天工业协会称美加征关税将损害美民航产业： （1）美联储系统高管称美关税政策或致通胀率 持续居高； （2）墨西哥行业协会称美关税政策破坏北美汽车供应链稳定； 2、许其亮同志遗体在京火化； 3、【锲而不舍落实中央八项规定精神】各地一体推进学查改 确保学习教育成果可感可及； 4、"两新"下乡进村 激活农村市场消费新活力； 5、我国构建起冷链物流"四横四纵"骨干通道网络； 6、因地制宜 建设美丽海湾； 7、【真抓实干 打开改革发展新天地】江西加快构建现代化产业体系； 8、【一线调研】一家小微企业的"夺冠"密码； 9、第一批全国零售业创新提升试点城市名单发布； 10、各地加快制修订住宅项目地方标准； 11、《2025中国海洋经济发展指数》今天发布； 12、中国进出口银行前5个月投放外贸领域贷款4600亿元； 13、渤海最大油气平台完成海上浮托安装； 14、新疆奇台射电望远镜项目中心塔混凝土浇筑完成； 15、俄称抵达顿涅茨克西部边界并继续推进 乌称在多方向击退俄进攻 俄乌换俘计划生变 双方各执一 词； 16、伊朗称获得大量以色 ...

Core Viewpoint - The successful development of China's first 10-meter diameter stainless steel storage tank prototype marks a significant leap in the country's heavy rocket manufacturing capabilities, positioning it to compete in the next generation of space exploration and heavy lift systems [1][3][12]. Group 1: Technical Significance - The 10-meter diameter represents a critical threshold in rocket design, as larger storage tanks are essential for heavy rockets, which are necessary for ambitious space missions such as lunar bases and Mars exploration [3][5]. - The introduction of stainless steel as a material for the storage tank signifies a shift in manufacturing philosophy, offering advantages in strength, cost, and reusability compared to traditional aluminum alloys [5][6]. - The prototype is not designed for current rockets but is intended for the next generation of heavy rockets, specifically the Long March 9, which aims to be a reusable system with significant thrust capabilities [6][12]. Group 2: Competitive Landscape - The development of the 10-meter storage tank is a strategic move for China to establish a foothold in the competitive landscape of super heavy rockets, where the U.S. has already made significant advancements with NASA's SLS and SpaceX's Starship [12][13]. - The global race for super heavy rockets is intensifying, with the U.S. focusing on high-reliability systems and commercial deep space capabilities, while China aims to leapfrog existing technologies by directly entering the super heavy and reusable rocket domain [12][15]. - The ability to manufacture large-diameter, modular, and high-temperature resistant structures is crucial for achieving high-frequency, low-cost space launches, which is the future of space transportation [15][16]. Group 3: Industrial Implications - The 10-meter stainless steel storage tank prototype is not merely a component but represents a foundational shift in China's space manufacturing logic, indicating a move towards a more industrialized approach to rocket production [17]. - The successful creation of this prototype demonstrates China's readiness to develop the necessary infrastructure and capabilities to support the next generation of space vehicles, which is essential for maintaining competitiveness in the global space race [16][17]. - The focus on building a robust manufacturing system capable of producing large components is a critical step towards achieving the goal of high-frequency space launches, which will be vital for future missions [15][17].