As far as I know, outside of purported outgasings on the lunar surface, it is
indeed quiet. But this has not always been so. Early in the moon's formation
it was geologically active, as was the earth's surface. Both were kept
active, in large part, to the steady slammimgs of large meteorites, which by
hydrostatic shock, helped induce volcanos. With the ceasing of so many meteor
strikes on the moon (except for that one in the 11th century, observed by an
English monk, that caused the moon to swing like a bell in its orbit),
volcanic geological activity is minimal.
<<Hmmm.... I know there are volcanos on Mars & Io and I think a
couple of other moons, but I didn't think our moon had any.
I thought the general consensus was its been a dry and
relatively solid planet most of its life.
I'm willing to stand corrected if you can find me a picture
of a volcano on the moon.
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