Feeling like taking a vacation.
You evaporate over billions of years via Hawking radiation.
How would one exit a black hole?
Submitted 5 days ago by renamon_silver@lemmy.wtf to [deleted]
Comments
dual_sport_dork@lemmy.world 5 days ago
rikudou@lemmings.world 5 days ago
Try more like trillions of trillions of trillions… repeat a few more times.
pressanykeynow@lemmy.world 3 days ago
Luckily time flies fast inside.
TranquilTurbulence@lemmy.zip 5 days ago
As if being shredded 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.
scarabic@lemmy.world 4 days ago
Well your information is preserved in the universe and that’s all any of us can really lay claim to anyway.
ApathyTree@lemmy.dbzer0.com 3 days ago
That assumes black holes aren’t the Big Bang white hole events of new pocket universes of the fizzy foam multiverse.
You could be part of a whole new universe! You wouldn’t know it, but how fun!
ivanafterall@lemmy.world 4 days ago
What if I have somewhere to be before then?
Kolanaki@pawb.social 5 days ago
Generally speaking, as Hawking Radiation.
HeyThisIsntTheYMCA@lemmy.world 5 days ago
what if i want to use my legs afters
adespoton@lemmy.ca 5 days ago
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.
dogs0n@sh.itjust.works 5 days ago
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
sbeak@sopuli.xyz 4 days ago
:0
db2@lemmy.world 5 days ago
You wait for it to reach a critical mass and explode. Might take a little while.
remon@ani.social 5 days ago
You’re maybe thinking of white dwarfs. Black holes don’t do that.
victorz@lemmy.world 5 days ago
Do they do that? Is that what the Big Bang was?
timroerstroem@feddit.dk 5 days ago
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.
Tollana1234567@lemmy.today 4 days ago
depends how close you are, and not getting spaghettified.
JPSound@lemmy.world 5 days ago
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 4 days ago
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 4 days ago
I love how mind bending it is imagining what lies inside a black hole. Everything we know about physics essentially goes right out the window beyond the event horizon.
chicken@lemmy.dbzer0.com 5 days ago
Does this also mean that black holes are totally indestructible?
WolfLink@sh.itjust.works 4 days ago
Basically.
They slowly decay as hawking radiation, but there’s nothing you can do to speed up the process.
JPSound@lemmy.world 4 days 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.
aeternum@lemmy.blahaj.zone 4 days ago
And anything without mass MUST travel at the speed of light
You’re not the boss of me! I do what i want!
phoenixz@lemmy.ca 4 days ago
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.
BuboScandiacus@mander.xyz 4 days ago
SkyezOpen@lemmy.world 3 days ago
So if you walk backwards, every direction leads out. Easy!
phoenixz@lemmy.ca 2 days ago
So if you walk backwards, every direction leads further in. Easy!
Exactly!
renamon_silver@lemmy.wtf 4 days ago
Vacation is seeming further and further away.
phoenixz@lemmy.ca 4 days ago
The good news though is that so does work. So does anything, really.
ilinamorato@lemmy.world 3 days ago
Well, the end of it is, at least.
zeropointone@lemmy.world 5 days ago
Just use the same technology that allowed you to enter a black hole without dying.
JPSound@lemmy.world 5 days ago
With super massize black holes, you could pass the event horizon and not even know it. To you, everything would remain relatively (no pun intended) comfortable. You could live for a couple days, falling towards the singularity before the gravitational gradient becomes enough to rip you apart, thus ending your life.
zeropointone@lemmy.world 5 days ago
…which is why you need technology so powerful it can protect you from a singularity.
daniskarma@lemmy.dbzer0.com 4 days ago
Now I have a doubt. Could you have a stable orbit around the singularity but inside the event horizon?
Maybe you could live a comfy life there.
CatDogL0ver@lemmy.world 5 days ago
Which technology? Become a bigger AH than the black hole?
zeropointone@lemmy.world 5 days ago
I mean… kind of.
rikudou@lemmings.world 5 days ago
That’s actually not that hard, if we’re talking about a rotating black hole that’s sufficiently large (like the supermassive ones are).
DeathByBigSad@sh.itjust.works 5 days 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.
BrainInABox@lemmy.ml 4 days ago
One wouldn’t
PetteriSkaffari@lemmy.world 4 days ago
You can eveporate your way out of it, given enough time.
Strider@lemmy.world 4 days ago
Through a white hole.
(not kidding)
_cryptagion@lemmy.dbzer0.com 4 days ago
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.
Olhonestjim@lemmy.world 3 days ago
Or if every Universe begins with a white hole, you now have a set of keys to the Multiverse.
yermaw@sh.itjust.works 3 days ago
hungryphrog@lemmy.blahaj.zone 3 days ago
You don’t.
nikosey@lemmy.world 5 days ago
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.
Backhandedsmack@lemmy.world 4 days ago
No no no. You need to take the u-turn at the other end of the universe.
JcbAzPx@lemmy.world 4 days ago
You’ll be slowly radiated out one half of an entangled pair of particles at a time. Arranging for reconstruction might prove difficult.
Im28xwa@lemdro.id 5 days ago
go to the other end
Notyou@sopuli.xyz 5 days 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.
allo@sh.itjust.works 5 days 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.
AA5B@lemmy.world 4 days ago
As a jet of energy, assuming you haven’t actually crossed the event horizon
Zachariah@lemmy.world 5 days ago
by entering a black hole nested in that black hole
zaphod@sopuli.xyz 3 days ago
That’s the fun part, you don’t.
thatradomguy@lemmy.world 5 days ago
feed it taco bell
HatchetHaro@pawb.social 3 days ago
same as you would anybody’s hole: just pull out.
xePBMg9@lemmynsfw.com 5 days ago
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.
ilinamorato@lemmy.world 3 days ago
Actually, it may be that it quite literally can’t take any time inside a singularity! As you approach a singularity, the spacetime curve representing the passage of time approaches zero, meaning that from your perspective, the universe outside the event horizon moves more and more impossibly fast, and from an outside perspective, you move more and more slowly until your motion appears to stop entirely.
At the singularity, our understanding of spacetime basically just shrugs in an infinite manner, puts on its hat, and clocks out for the day. It may be that, for the singularity, the entirety of time between the collapse of the star that formed the black hole and the eventual evaporation of the black hole due to Hawking radiation are compressed into a single instant, and no time at all passes for it.
So you might not need any books at all, because by the time you reach the singularity (which wouldn’t take a particularly long subjective time), it may well be the end of the universe. Hope you paid the meter.
RedGreenBlue@lemmy.zip 3 days ago
Enjoyable read!
667@lemmy.radio 5 days ago
Only from an outside perspective. Inside the black hole it’s already next Tuesday.
wreckedcarzz@lemmy.world 4 days ago
You go into a white hole, duh
Asidonhopo@lemmy.world 5 days ago
Magic
vane@lemmy.world 4 days ago
With space time snapshot machine I guess, you setup space time snapshot machine to take snapshot and setup detector on your body particles to roll you back from snapshot after your every particle is altered and it rolls you back to previous state. I think this should work.
YiddishMcSquidish@lemmy.today 4 days ago
And never trust it when it says “quick save” always make a manual backup!
RizzRustbolt@lemmy.world 4 days ago
Find the Myotrope, invert your orthocameral orbit, grab your ankles, and hold on!
Batman@lemmy.world 2 days ago
you just walk out. might need to build a bridge first
Tiger666@lemmy.ca 5 days ago
The singularity will pull you in, feet first, then the tidal effect will spaghettify you. You will be ripped apart atom by atom by those same tidal forces. You cannot escape the event horizon.
Good luck!
CatDogL0ver@lemmy.world 5 days ago
Perhaps op can escape in a form of radioadiation…
fritobugger2017@lemmy.world 3 days ago
I don’t know about exiting but I like Enter A Black Hole Backwards followed by Chilly Water.
remon@ani.social 5 days ago
Image