Could, in theory, we merge black holes to prolong the life of the universe?

HonoraryMancunian@lemmy.world to

Ask Science@lemmy.worldEnglish · 8 months ago

Seeing as the heat death of the universe occurs once black holes have stopped emitting Hawking radiation, and BH’s life spans are tied to their mass, could a (very, very advanced) civilisation bring two or more together? Assuming nobody’s succumbed to proton decay before then, of course.

Bonus question: if so, what’s the longest timeline we could theoretically make? I’m thinking it would involve a black hole using all the matter in our local galaxy cluster.

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