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Evidence of water on the lunar surface from Chang'E-5 in-situ spectra and returned samples

Space Sciences

Evidence of water on the lunar surface from Chang'E-5 in-situ spectra and returned samples

J. Liu, B. Liu, et al.

Discover the cutting-edge findings from the Chang'E-5 mission, revealing a mean hydroxyl content of 28.5 ppm in lunar soils. This research, conducted by Jianjun Liu and colleagues, sheds light on the origins of lunar water and challenges existing notions, identifying hydroxyl-containing apatite as a key source.

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Playback language: English
Abstract
The distribution, time-varying characteristics, and sources of lunar water remain controversial. This study presents Chang'E-5 in-situ spectral observations of lunar water under Earth's magnetosphere shielding and relatively high temperatures. Results show a mean hydroxyl content of 28.5 ppm in lunar soils at the Chang'E-5 landing site, consistent with remote sensing and telescopic data. Analysis of returned samples suggests a weak contribution from solar wind implantation, while hydroxyl-containing apatite is identified as a potential significant source of the observed hydroxyl in this young mare region.
Publisher
Nature Communications
Published On
Jun 14, 2022
Authors
Jianjun Liu, Bin Liu, Xin Ren, Chunlai Li, Rong Shu, Lin Guo, Songzheng Yu, Qin Zhou, Dawei Liu, Xingguo Zeng, Xingye Gao, Guangliang Zhang, Wei Yan, Hongbo Zhang, Lihui Jia, Shifeng Jin, Chunhua Xu, Xiangjin Deng, Jianfeng Xie, Jianfeng Yang, Changning Huang, Wei Zuo, Yan Su, Weibin Wen, Ziyuan Ouyang
Tags
lunar water
Chang'E-5
hydroxyl content
solar wind implantation
apatite
mare region
spectral observations

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