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Aliens haven't contacted us. Scientists found a compelling reason why.

tectonic planet are rare

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  • Rare Earth by Peter Ward is what you're after here. I took an elective in college that effectively was reading a bunch of space science (and history, it was odd) and discussing. This one caught me off guard but was a decent breakdown of a possible answer to Fermi.

    I don't necessarily agree with the supposition, mainly because it still comes from a place of specifically carbon-based life as the end goal. But they do lay out reasoning in an easy to understand way that was super neat to learn.

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