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Aliens haven't contacted us. Scientists found a compelling reason why. (mashable.com)

submitted 4 months ago by [email protected] to c/[email protected]

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tectonic planet are rare

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[–] [email protected] 5 points 4 months ago (1 children)

Actually life needs complex elements that only form in neutron star collisions(kilonovas) It could have been that the universe needed to be a couple billion years old before the elements that could create complex life actually came into existence. Everything else is pretty accurate, and I do think interstellar travel will end up being impossible, even terraforming other planets seems like it's a couple thousand years away.

As far as earth-like planets being rare, even if they are only 1 in 10,000 there would likely still be tens of millions in our galaxy alone.

[–] [email protected] 3 points 4 months ago

I think 1 in 10k is way too common still. Somewhere between 1 in a billion to one in a trillion is more reasonable.