嫦娥六号玄武岩揭示月球背面月幔更“干”

Core Insights - Chinese scientists have achieved a significant breakthrough by studying lunar samples returned by the Chang'e 6 mission, revealing the water content in the lunar mantle on the far side of the Moon to be less than 2 micrograms per gram, providing crucial constraints for understanding the temporal and spatial evolution of water in the lunar mantle [1][2] Group 1: Research Findings - The water content in the mantle of the Chang'e 6 basalt samples is reported to be between 1 microgram per gram and 1.5 micrograms per gram, marking the lowest value reported to date, indicating that the mantle source region of the Chang'e 6 basalt is drier than that of the lunar near side [2] - The research results support the giant impact hypothesis regarding the Moon's origin and its subsequent evolution, suggesting that the SPA impact event may have altered the water content in the mantle source region [2] Group 2: Significance of Findings - The findings have important implications for understanding the Moon's origin, magmatic activity, and resource environmental effects, as they challenge previous assumptions about the Moon's water content established during the Apollo era [1] - The study is considered a milestone in lunar research, as it is the first to report the water content in the lunar mantle on the far side, contributing foundational knowledge to the field [4]