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@patrick.doyle.lol

Something I think people don't say often enough about Hawking radiation: There are no known black holes anywhere in the universe that are actually evaporating. Any black hole more massive than the moon has a temperature lower than the cosmic microwave background, so they absorb more than they emit.

Patrick Doyle 🇨🇦

@patrick.doyle.lol

We know of no way to form such tiny black holes, so the only lunar-mass black holes that exist are primordial, and we have little evidence yet that those exist. Known black holes won't even begin evaporating until the very very far future. Like on the order of half a trillion years from now.

27/9/26, 2:32 pm0 reposts0 likes

Patrick Doyle 🇨🇦

@patrick.doyle.lol

(Caveat: I did these calculations myself and I'm not an expert. Take with a grain of salt.)