My understanding is a permanent base beyond LEO would need radiation shielding. If they find caves that are large, stable, and not too deep, they could be a site for a lunar base.
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NASA chief Jared Isaacman wants to keep an open mind about UFOs, but leans towards natural phenomena or unfamiliar technology. “If it’s aliens” makes the headline. His preference for more ordinary explanations gets rather less billing. space.com/space-exploration/se…