Maybe a soft-landing, drilling and analyzing the samples in lunar mini-lab is a better idea that shoot projectiles at the Moon? But who knows - let's hope the results are good.

But that would also question (if there is water in the dark, never to Sun oriented areas in craters) how the Apollo PLIS can worked. If water in shadow on the Moon does not evaporate, then those PLIS cannot work the way they say they did...

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"It is dangerous to be right in matters on which the established authorities are wrong." - Voltaire
...just keep folding, just keep folding... :)