A SpaceX rocket stage will soon smash into the Moon

Well, that’s more or less exactly what’s happening. I have a good physics-geek friend who works for Hopkins Applied Physics Laboratory. A few years age they worked on a different project with very similar goals - crash something into the moon so that the plume could be checked for signs of water and other things. Pretty cool stuff. I don’t recall how far their thing went but do remember that there was extensive discussion about the morality of the experiment, particularly the (admittedly small) potential to introduce earth biology.

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