我国已发放九批共125.42克月球科研样品 央视网消息：来自国家航天局探月与航天工程中心的消息，近日，嫦娥六号月球样品有了新发现。中国科学家通过对嫦娥六号从月球背面 采集的玄武岩样品研究，揭示了月幔的"超还原"状态。这一发现进一步深化了人类对月球内部组成的认识，也为理解月球的形成与演化提供了 新的线索。 月球内部由月壳、月幔和月核组成，月幔介于月壳和月核之间，厚度1000多千米，占月球体积一半以上，是月球岩浆活动和火山喷发的物 质来源，影响着月球的演化。 "超还原月幔"是指月幔处于一种非常还原的状态，也就是其中的元素倾向于以较低的价态存在，这意味着这些月幔物质更加原始，或者遭 受了大型撞击导致了还原过程。 近日，中国科学家发布在国际学术期刊《自然通讯》的研究成果显示，嫦娥六号着陆区深处的月幔不仅比月球正面的月幔更"干"、更"贫 瘠"，而且更"还原"。专家介绍，月幔没有被氧化过，或者有可能是后来被变得更还原，有可能是大型的事件造成，行星的氧化还原状态是理 解行星内部过程以及行星表面宜居性的关键指标。 月球正面和背面有明显区别，玄武岩分布、地貌特征、化学成分和月壳厚度等都有非常大的不同。据介绍，月球正面和背面月幔 ...

Core Points - The National Space Administration has distributed nine batches of lunar research samples totaling 125.42 grams, including 2.18 grams from the Chang'e 5 mission for seven institutions from six other countries [1] - Over 150 research results have been published by domestic and international scientists based on the lunar samples from the Chang'e 5 and Chang'e 6 missions [1] - The National Space Administration approved international borrowing applications for lunar samples from seven institutions in six countries, including France, Germany, Japan, Pakistan, the UK, and the USA [1]

Core Viewpoint - The China National Space Administration (CNSA) has approved international applications for lunar samples from the Chang'e 5 mission, allowing seven institutions from six countries, including two U.S. universities, to borrow these samples. However, U.S. researchers face restrictions due to the "Wolf Amendment," which prohibits NASA funding for projects involving Chinese lunar samples [1][6][7]. Group 1: International Collaboration - The approved institutions include the University of Brown and Stony Brook University, both receiving NASA funding, but they cannot use these funds for research on the Chinese samples due to the "Wolf Amendment" [1][6]. - Timothy Glotch from Stony Brook University expressed gratitude for funding from his institution to collaborate with Chinese scientists, indicating a willingness to analyze the samples despite the restrictions [3][4]. - CNSA Administrator Zhang Zhongde emphasized the importance of sharing lunar research for the benefit of humanity, stating that the Chang'e program is open to international collaboration [6][8]. Group 2: Research Objectives - Glotch aims to compare the properties of lunar soil and rock samples with those from the Apollo program, focusing on thermal properties and magnetic characteristics to understand the geological history of the Moon [4][6]. - The research will involve examining ultra-thin rock slices under high magnification to uncover clues about the origin and composition of the rocks, contributing to a better understanding of lunar geology [4][6]. Group 3: U.S.-China Relations in Space - The "Wolf Amendment" has hindered U.S. scientists' access to Chinese lunar samples and vice versa, with Chinese scientists facing difficulties in obtaining Apollo samples from NASA [4][7]. - There have been ongoing discussions between U.S. and Chinese space officials regarding the sharing of lunar samples, but U.S. institutions still face significant domestic obstacles to receiving the samples [7][8]. - Wu Weiren, a prominent figure in China's lunar exploration program, criticized the U.S. for its isolationist policies and expressed a desire for more open communication and collaboration in space exploration [8].