嫦娥六号月壤中发现陨石残留物有助解释月球水来源

Core Insights - Chinese scientists have identified impact residues from CI carbonaceous chondrites in lunar samples collected by Chang'e 6, suggesting that water detected in lunar samples may originate from these meteorite impacts [1][2] - The research was published in the Proceedings of the National Academy of Sciences (PNAS) on October 21, 2023, highlighting the significance of lunar samples as a natural archive for studying extraterrestrial materials [1] Group 1 - The study reveals that CI carbonaceous chondrites, which are rare on Earth, contribute to the understanding of planetary formation and evolution due to their preservation on the Moon [1] - The research team, led by Academician Xu Yigang from the Guangzhou Institute of Geochemistry, established a systematic method for identifying extraterrestrial materials in lunar samples [1] - The findings indicate that the remnants of CI chondrites are products of their parent bodies impacting the Moon's surface, melting, and then rapidly crystallizing [1] Group 2 - The discovery suggests that materials from the outer solar system can migrate to the inner solar system, providing insights into the sources of water on the Moon's surface [2] - This research opens new avenues for future studies on the distribution and evolution of lunar water resources [2]