An unprecedented constraint on water content in the sunlit lunar exosphere seen by Lunar-based Ultra

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  The content of OH/H2O molecules in the tenuous exosphere of the Moon is still an open issue at present.We here report an unprecedented upper limit of the content of the OH radicals, which is obtained from the in situ measurements carried out by the Lunar-based Ultraviolet Telescope, a payload of Chinese Change-3 mission.
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