What happens to exposed moisture quickly when a human is subjected to the lunar vacuum?

Answer

It would begin to vaporize and boil away (ebullism).

The lack of atmospheric pressure causes the boiling point of water to drop dramatically, leading to the rapid vaporization and boiling of any exposed moisture, such as that in the eyes, mouth, and lungs.

What happens to exposed moisture quickly when a human is subjected to the lunar vacuum?

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