【新华社】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 the 2-gram lunar soil samples from the Chang'e 6 mission, suggesting that previously detected water with positive oxygen isotopic characteristics 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 meteorites as messengers of the solar system and their role in studying planetary formation and evolution [1] Group 1 - The research team, led by Academician Xu Yigang from the Guangzhou Institute of Geochemistry, established a systematic method for identifying extraterrestrial meteorite materials in lunar samples [1] - CI carbonaceous chondrites, which are rich in water and organic materials essential for life, primarily originate from asteroids located in the outer solar system [1] - The findings indicate that materials from the outer solar system can migrate inward, providing important insights into the sources of water on the lunar surface [1][2]