Abstract
Space Sciences Recent research has fueled debate regarding the abundance of water in the Moon's interior and its implications for lunar evolution, but surface water is known to occur in the lunar regolith. Using data from NASA's Moon Mineralogy Mapper—an imaging spectrometer that was included on India's first mission to the Moon, Chandrayaan-1—Li and Milliken present a globally comprehensive map of these deposits. The upper meter of the lunar regolith is estimated to contain roughly 0.1 petagrams of water. Higher latitudes have more water ice than lower latitudes. Most of the ice was implanted by solar wind, with some local input from the lunar interior. Sci. Adv. 10.1126/sciadv.1701471 (2017).
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