Rebecca Sato writes on the Daily Galaxy:
Scientists recently solved some longstanding lunar mysteries, including how the Moon is producing its own water.
While it turns out that the Moon is not made out of Swiss cheese (disappointing, I know—that would have been a food source for lunar explorers), it does act like a big sponge of sorts. The lunar surface is a loose collection of irregular dust grains, known as regolith. Basically, the regolith absorbs electrically charged particles given out by the Sun. These electrically charged particles interact with molecules of oxygen that are already present in lunar dust, and voila, you have H2O.
Incoming protons are trapped in the spaces between the grains, absorbed, and then interact with the oxygen in the lunar regolith to produce hydroxyl and water.
So, there’s water on the moon, and we now know how it’s getting there, but what does that do for us from a practical standpoint? Could humans living on a lunar base drink this moon water, for example?
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