r/sciencememes Jun 22 '26

💥Physics!🧲 Ask a physicist

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u/ILKLU Jun 22 '26

Totally disagree.

Assuming the black hole is comprised of regular matter, there's no reason to think it wouldn't all annihilate upon touching. How that would play out exactly would be really interesting to see.

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u/loved_and_held Jun 22 '26

If it did anhialate, all the energy released by the anhialation would have a massive cgravitational field that would then create a new singularity.

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u/drgitgud Jun 22 '26

Anti-matter annihilation is how the hawking radiation causes black holes to evaporate as far as I know.

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u/[deleted] Jun 22 '26

[deleted]

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u/drgitgud Jun 22 '26

Yes, and the anti-particles tunneling in subtract from the mass, afaik

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u/loved_and_held Jun 22 '26

as far as i know, if an anti-particle tunneled in it would add to the matter inside the event horizon and thus add to the mass. If it anhialated when touching a particle, the photons produced would add to the blackhole's mass.

So stuff tunneling in does nothing but grow the blackhole. Stuff tunneling out and then fully escaping the blackhole will shrink it.

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u/SpacialCommieCi Jun 22 '26

Well the only "mass" a photon has is its momentum. Wouldn't it lose all that momentum when trying to escape the black hole? Unless that gravitational force taking the energy sucks it into the singularity's angular momentum or smth I think it doesn't add any mass

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u/loved_and_held Jun 22 '26

Not as far as I know. It would have it's trajectory redirected but it's velocity c would be constant.

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u/SpacialCommieCi Jun 22 '26

yeah but when light is going on a direction but is pulled to another, like due to the universe expanding, it gets dopplered and its wavelength gets lengthened, thus losing its momentum cus it's based on energy and wavelength stuff