this post was submitted on 17 Aug 2025
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No Stupid Questions

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[–] remon@ani.social 147 points 1 month ago
[–] dual_sport_dork@lemmy.world 75 points 1 month ago (4 children)

You evaporate over billions of years via Hawking radiation.

[–] rikudou@lemmings.world 31 points 1 month ago (1 children)

Try more like trillions of trillions of trillions... repeat a few more times.

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[–] TranquilTurbulence@lemmy.zip 14 points 1 month ago* (last edited 1 month ago) (1 children)

As if being shredded to atoms wasn't harsh enough, you don't even get keep your neutrons and electrons in this process. I guess it still counts as "exiting" the black hole, but just barely.

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[–] Kolanaki@pawb.social 42 points 1 month ago (1 children)

Generally speaking, as Hawking Radiation.

[–] HeyThisIsntTheYMCA@lemmy.world 10 points 1 month ago (1 children)

what if i want to use my legs afters

[–] adespoton@lemmy.ca 6 points 1 month ago (1 children)

You’d have to build them first.

Anything more complex than an atom is going to be disintegrated before it even enters a black hole due to the intense energies at play at the interface.

[–] Tinidril@midwest.social 8 points 1 month ago

Anything as complex as an atom will be disintegrated too.

[–] dogs0n@sh.itjust.works 38 points 1 month ago (1 children)

When you're ready, you should see a bookshelf. Start messing with the books to send a message to your daughter and maybe she will help you.

Prerequisites: daughter

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[–] JPSound@lemmy.world 33 points 1 month ago (3 children)

Literally, impossible. To exit the event horizon of a black hole, you'd have to travel faster than the speed of light. We know for a fact that anything with mass cannot travel at the speed of light. (And anything without mass MUST travel at the speed of light) Once you cross the event horizon, you've been entirely and irreversibly separated from the rest of the universe.

[–] WoodScientist@sh.itjust.works 11 points 1 month ago (1 children)

It's not even about needing to exceed the speed of light. Once you cross the event horizon, spacetime around you is so warped that "out" doesn't exist anymore. Point your ship in any direction and fire up your FTL engine; it doesn't matter. No matter which way you try and fly your ship, you'll be getting closer to the center. Once you cross the event horizon, there is literally no way out.

[–] JPSound@lemmy.world 5 points 1 month ago* (last edited 1 month ago)

I love how mind bending it is imagining what lies inside a black hole. Everything we know about physics may essentially go right out the window beyond the event horizon.

[–] chicken@lemmy.dbzer0.com 4 points 1 month ago (2 children)

Does this also mean that black holes are totally indestructible?

[–] WolfLink@sh.itjust.works 7 points 1 month ago

Basically.

They slowly decay as hawking radiation, but there’s nothing you can do to speed up the process.

[–] JPSound@lemmy.world 6 points 1 month ago

Well, there's the hypothesis of a "naked singularity" whereas if enough charge or spin could be added to a black hole, the event horizon, aka, the black part of a black hole, could just vanish. This would expose the singularity at its center but its just a hypothesis. Or better yet, a thought experiment at best. This wouldn't eliminate its mass though.

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[–] db2@lemmy.world 24 points 1 month ago (3 children)

You wait for it to reach a critical mass and explode. Might take a little while.

[–] remon@ani.social 29 points 1 month ago

You're maybe thinking of white dwarfs. Black holes don't do that.

[–] victorz@lemmy.world 9 points 1 month ago (2 children)

Do they do that? Is that what the Big Bang was?

[–] remon@ani.social 33 points 1 month ago (1 children)
[–] Lumidaub@feddit.org 8 points 1 month ago (1 children)

That's a hypothesis though, right? They haven't detected any yet afaik (which the article could make clearer in its introduction).

[–] remon@ani.social 7 points 1 month ago (5 children)

Yeah, it mentions it at the end under the "Experimental observation" section.

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[–] timroerstroem@feddit.dk 13 points 1 month ago (1 children)

More or less. In my layman's understanding: Black holes 'evaporate' slowly through Hawking radiation, losing mass as a function of their surface area (simplistically, particle/anti-particle pairs 'pop out of nothing' near the event horizon, one gets swallowed up the other escapes, this means a net loss of energy, which has to 'paid' by the black hole losing mass, think E=mc^2^).

Since a black hole behaves (geometrically) like any other sphere, the proportion of its area to its volume will grow as the black hole loses mass (i.e. it will have more and more relative area the smaller it gets), this process speeds up over time thus ending in what I guess you could call an explosion (more a whimper than a bang, to borrow a phrase).

Part 2 of your question: We don't know.

[–] meco03211@lemmy.world 4 points 1 month ago (3 children)

Wouldn't the hawking radiation need to be a higher rate than the black hole is absorbing matter?

[–] remon@ani.social 6 points 1 month ago* (last edited 1 month ago)

Yes, the effect is extremely tiny and easily offset when a black hole is "feeding".

[–] rikudou@lemmings.world 5 points 1 month ago (2 children)

Which will eventually happen to all black holes because the last things remaining will be black holes, so there would be no matter to absorb.

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[–] zakobjoa@lemmy.world 24 points 1 month ago (1 children)
[–] phoenixz@lemmy.ca 20 points 1 month ago (6 children)

Space time gets so curved that literally every direction around you is the center of the black hole.

You look forward? Black hole center.

Behind you? Center

Up down? You guessed it

From your perspective, the center literally is the only direction you can go, deeper.

[–] DeathByBigSad@sh.itjust.works 17 points 1 month ago

Have 5D future humans put you in the tesseract, then you exit seeing your daughter on their deathbed while you barely aged a day.

[–] nikosey@lemmy.world 16 points 1 month ago (1 children)

don't fight against gravity by trying to fly directly towards the universe. Instead, fly parallel to the universe until you are out of the black hole's pull, then angle back towards the universe.

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[–] Strider@lemmy.world 14 points 1 month ago* (last edited 1 month ago) (2 children)
[–] _cryptagion@lemmy.dbzer0.com 7 points 1 month ago (2 children)

since black holes are incredibly common in the universe, if everything that went into a black hole came out the "other end" from a white hole, then it would logically follow that white holes would also be incredibly common. however, while white holes might exist, nobody has ever observed one, or found any mechanism capable of creating one, or evidence suggesting that they even exist, or have ever existed, or will ever exist. meanwhile, we have directly imaged the accretion disk around a supermassive black hole.

one definitely exists, the other is firmly within the realm of theoretical only, where it is expected to stay indefinitely.

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[–] BrainInABox@lemmy.ml 13 points 1 month ago (1 children)
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[–] Im28xwa 11 points 1 month ago (1 children)
[–] Notyou@sopuli.xyz 4 points 1 month ago

Exactly, when you're going through hell, keep going. Maybe you'll find a white hole in the other end with a new universe to explore.

[–] JcbAzPx@lemmy.world 9 points 1 month ago

You'll be slowly radiated out one half of an entangled pair of particles at a time. Arranging for reconstruction might prove difficult.

[–] allo@sh.itjust.works 9 points 1 month ago

with a stronger blackhole next to your blackhole. just have a stronger pull.

its like how do u have bribed politicians not vote according to that bribe: bribe them with a bigger bribe.

[–] Zachariah@lemmy.world 8 points 1 month ago (3 children)
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[–] Fleur_@aussie.zone 7 points 1 month ago (6 children)

Are you capable of moving faster than the speed of light?

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[–] hungryphrog@lemmy.blahaj.zone 7 points 1 month ago
[–] AA5B@lemmy.world 6 points 1 month ago

As a jet of energy, assuming you haven’t actually crossed the event horizon

[–] thatradomguy@lemmy.world 6 points 1 month ago

feed it taco bell

[–] xePBMg9@lemmynsfw.com 5 points 1 month ago (3 children)

With the assumption that we are alright in there, wait until it evaporates naturally. I hope you brought a lot of books, cause depending on its mass, it can take some time.

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[–] zaphod@sopuli.xyz 5 points 1 month ago

That's the fun part, you don't.

[–] Asidonhopo@lemmy.world 4 points 1 month ago
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