月背的月幔有点“冷”！中国人研究月球土特产又有新成果

Core Insights - The research conducted by Chinese scientists on the lunar samples from the Chang'e 6 mission reveals that the lunar mantle on the far side of the Moon is cooler compared to the near side, enhancing the understanding of the Moon's "bipolarity" phenomenon [1][7] - This study provides critical scientific data for understanding the evolution of the Moon and the temperature differences between the lunar mantle on both sides [1] Research Findings - The analysis of basalt samples from the far side of the Moon indicates that the crystallization temperature of these samples is approximately 1100°C, which is about 100°C lower than that of samples from the near side, such as those from the Chang'e 5 mission [2] - The potential temperature of the lunar mantle on the far side is found to be around 1400°C, which is lower than the near side's potential temperature of approximately 1500°C [4] - Remote sensing data corroborates these findings, showing that the potential temperature of the lunar mantle on the far side is about 70°C lower than that on the near side, further validating the research results [4] Lunar Characteristics - The study highlights significant differences between the near and far sides of the Moon, including topography, elemental distribution, and geological features, which are collectively referred to as the "bipolarity" phenomenon [7] - The near side is characterized by a relatively flat terrain with extensive basaltic plains, covering over 30% of its surface, while the far side has only about 1% to 2% of such plains [7] - The near side is richer in radioactive elements compared to the far side, which is considered a key scientific question in lunar exploration [7]