Quote:
Originally Posted by PTTG
Just rough estimates here, one 100-ton rock that could hit the Earth at dangerous velocities, if it instead hit the moon, would probably have much less than 50% efficiency at dropping moon rocks on Earth at dangerous velocities.
That's not to say that it's a bad approach; a lunar debris storm after a, say, Ceres-sized object strikes the moon would result in a very interesting world exactly because it is one with a heavy rain of smaller impacts. Plus the moon would be glowing orange, so that would be cool too.
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The dinosaur killer was probably more like a billion tons than a hundred. Let us not speak of such trivialities. You be hard pressed to get the 100-tonner out of the single digit kiloton equivalent range.