the.com/regolith

the moon's skin: pulverized rock that's been getting hit for four billion years and shows it.

means the loose layer of dust, soil, and broken rock covering solid bedrock on planets, moons, and asteroids.

from from greek rhegos (blanket) plus lithos (stone) — coined in 1897 by geologist george merrill to describe earth's weathered rock cover, later borrowed wholesale for the moon.

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