

Ace covered it well enough, and I think you can find their “shelf life” using the math Hawking came up with to predict when a certain mass black hole will be fully evaporated. How accurately I’m not sure.
The actual form of the radiation emmited back into space from evaporation depends on the mass IIRC. So stellar to supermassive would show up as photons and neutrinos. As they shrink they get hotter for some reason (I’m just a layperson too) and then could emit stuff like electrons, muons, etc. Evaporation also accelerates as the black hole mass shrinks.
Not sure what happens when the black hole reaches the mass of something that’s not a black hole like a Neutron Star. Does the black hole singularity explode? Don’t know. That’s one idea vs just shrinking until it winks out of existence.
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