10月6日是中秋節(jié)，國家航天局和國家原子能機構聯(lián)合發(fā)布嫦娥六號月球背面樣品研究最新成果——中國科學家首次基于嫦娥六號月球背面樣品（月壤）研究發(fā)現，月球背面月幔相比月球正面更“冷”。

The lunar farside mantle is relatively colder than the nearside mantle, Chinese scientists have, for the first time, discovered based on samples collected from the lunar far side by China's Chang'e 6 mission, China National Space Administration (CNSA) and China Atomic Energy Authority jointly released on Monday, which marks the traditional Chinese Mid-Autumn Festival (a traditional Chinese holiday that originates from worship of the moon).

這一發(fā)現進一步深化了人類對月球“二分性”現象的認識，為月球正面與月球背面的月幔溫度差異提供了巖石學與地球化學等科學依據，為月球演化和“二分性”特征研究提供了關鍵科學數據。

The latest research findings provided critical scientific data that deepen humanity's understanding of the dual nature of the moon and its evolutionary processes.

該研究結果由中核集團核工業(yè)北京地質研究院、北京大學、山東大學共同合作完成，已刊發(fā)于《自然·地球科學》。

The finding that the moon's farside mantle is "colder" than the near side was a collaborative effort by the Beijing Research Institute of Uranium Geology under the China National Nuclear Corp, Peking University, and Shandong University. The results have been published on the website of the prestigious international journal

Nature

科研團隊通過對月壤玄武巖樣品中典型單斜輝石、斜長石等礦物的成分分析，運用“單斜輝石單礦物溫壓計”“單斜輝石-熔體平衡溫壓計”“斜長石-熔體平衡溫度計”三種不同的溫壓計，計算玄武巖形成的溫度與壓力。為確保研究結果的科學性，團隊還通過巖石學模型模擬了嫦娥六號玄武巖結晶過程。以上四種獨立方法得出一致結果：嫦娥六號玄武巖樣品的結晶溫度約為1100℃，比來自月球正面的嫦娥五號等樣品低約100℃。

研究團隊還通過玄武巖全巖成分重建原始巖漿化學組成，計算月幔潛能溫度，發(fā)現月球背面月幔潛能溫度（約1400℃）低于月球正面（約1500℃）；選取月球正面和背面的月海玄武巖區(qū)域，通過衛(wèi)星遙感數據獲取的表面巖石化學成分計算，表明月球背面月幔潛能溫度低于正面約70℃，與樣品分析結論相近，這進一步增強了研究成果的可信度。

Their findings revealed that the crystallization temperature of the Chang'e 6 basalt samples is approximately 1,100 C, about 100 C lower than those samples from the near side, such as those from Chang'e 5. This study provides rock-based and geochemical evidence for the temperature differences between the mantles of the moon's near and far sides.

來源：環(huán)球時報 科技日報 參考消息

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