.....................on the moon?
EDIT: to have wind the moon needs an atmosphere, now we know that terraforming is possible, but if that was the case, why can't we see the atmosphere? terraformed mars and Venus don't have invisible atmospheres, and in the scene it's clearly not night time on the moon, so what gives?
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I read a book where they had atmosphere generators which was pretty dang cool. Maybe the Hell mouth is a large atmosphere generator.