月球背面月幔相比月球正面的更“冷”？嫦娥六号样品研究新成果解析

Core Insights - The latest research from the Chang'e 6 lunar mission indicates that the lunar mantle on the far side of the moon is cooler compared to the near side, enhancing understanding of the moon's "bipolarity" phenomenon [1][2] Group 1: Research Findings - The analysis of basalt samples from the lunar far side revealed a crystallization temperature of approximately 1100 degrees Celsius, which is about 100 degrees Celsius lower than samples from the lunar near side [2] - The potential temperature of the lunar mantle on the far side is estimated to be around 1400 degrees Celsius, compared to approximately 1500 degrees Celsius on the near side [2] - Remote sensing data corroborated these findings, showing that the potential temperature of the lunar mantle on the far side is about 70 degrees Celsius lower than that on the near side [2] Group 2: Geological Characteristics - Significant differences exist between the lunar near and far sides in terms of topography, elemental distribution, and rock characteristics, with the near side being relatively flat and the far side featuring more rugged terrain [3] - The near side contains over 30% of its surface covered by lunar maria, formed by early volcanic activity, while the far side has only about 1% to 2% of its surface covered by maria [3] - These differences are referred to as the "bipolarity" phenomenon, which is considered a key scientific question related to the moon's formation and evolutionary history [3]