What will happen if a small black hole passes through the human body?

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What's dumber than Flat Earth Theory?

Hollow Earth Theory.

"Scientists have suggested that primordial black holes (PBHs) could gather inside planets and asteroids, hollowing out their cores. They also noted that a PBH passing through Earth’s material would leave a detectable microscopic tunnel and suggested that such a passage through the human body would not be fatal. This is the question being addressed here."


This β€œarticleβ€œ reads like llm slop


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I remember reading this a while back, so I may be a bit off... but I think that while only a microscopic amount of mass would be directly consumed by the event horizon, the radiation caused by particles getting accelerated from passing *near* it would be enough to kill you.


The same thing that would happen if small anything would pass through human body.


Note that a blackhole with event horizon radius less than 1 mm would be a little bit more massive than the earth. If it is moving slowly enough, it would "capture" you in a tug of war with the earth. If it wasnt for earth I think you would end with it in your center of mass but given the earth, I think higher in your body.


TL;DR:

It would need to weigh more than 140,000,000,000,000 kg to kill you.


Reminds me of that new series Omni Loop.


The article is a little unclear whether 1.4Γ—10^17g is the cutoff mass for the definition of a PBH, or the mass above which they calculate a PBH would cause fatal damage.

If it's the latter, that is many orders of magnitude larger than i would have expected!

The paper itself has more info. Though I'd be lying if I understood it.

https://arxiv.org/html/2502.09734v1

EDIT: Removed the quote since it wasn't directly relevant. Section II in the paper is probably what you want.


Yeah, black holes are apparently weak AF. One 9mm round weighs 7*10^1 grams and can ruin my afternoon.




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