Solar Wind Rebuilds Moon Water Daily

Scientists have confirmed that the Moon can keep regenerating a thin surface layer of water-related molecules when solar wind protons slam into lunar soil and supply hydrogen that bonds with oxygen in the minerals. The NASA-led lab test used Apollo 17 samples inside an airless chamber and detected the telltale 3-micron infrared signal associated with hydroxyl and water formation. That same signature also follows a daily cycle that fades as the surface heats and strengthens again as it cools, which points to an active source replenishing it.

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