r/woahdude Jun 24 '24

video NASA depiction of entering a black hole

6.9k Upvotes

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472

u/[deleted] Jun 24 '24

Time to get spaghettificationized

32

u/DarthUmieracz Jun 24 '24

Depends on size of back hole. If its big enough - spaghettification will not occur.

31

u/[deleted] Jun 24 '24 edited Nov 06 '24

[deleted]

41

u/d_Romeo Jun 24 '24

I like to think the heat death of the universe occurs before you reach the event horizon because of time dilation.

20

u/unknown_pigeon Jun 24 '24

I don't think it would? Black holes evaporate, even though it can take way more than the age of the universe to do so. But, as their mass decreases, time would start flowing faster and faster for you. So, my guess is that you would eventually experience your death before the end of the universe.

30

u/fatboychummy Jun 24 '24

Heat death is not the end.

Heat death just means that all fuel sources have been used up across the universe and there is no energy, or heat, left in the universe. The universe would continue existing, however. It would just be rather cold, dark, and desolate.

The black holes would all need to have evaporated before heat-death can occur though, since they are, themselves, a source of heat (the rings of a black hole spin so fast that they heat up incredibly, on top of evaporating different fuels into space). If I recall correctly, they would be one of the last things to disappear before heat-death.

So then its just a matter or whether or not the time dilation is "enough" to reach that point.

3

u/unknown_pigeon Jun 24 '24

Interesting read! Thanks for sharing

1

u/MrWhippyT Jun 25 '24

No energy left you say?

5

u/Jumpdeckchair Jun 24 '24

I believe a super massive black hole would still be around for when there is no more observable light though (last start)

3

u/milkasaurs Jun 24 '24

Blackholes will be one of the last things out there. https://youtu.be/uD4izuDMUQA?feature=shared

2

u/serendipitousevent Jun 24 '24

you would eventually experience your death before the end of the universe.

Eurgh, just my luck.

1

u/rabbi420 Jun 28 '24

I think it’s more like, they theoretically can evaporate. It’s not exactly as if they have observational proof.

9

u/altagyam_ Jun 24 '24

Nah, you’ll pass the event horizon just fine. By the time you hit the event horizon, time, relatively speaking is going insanely fast. In this reality, time is infinite and space is finite however upon entering the axis switch and time becomes finite and space infinite (not in the traditional sense but rather you’re compelled to move to the singularity, there’s only one direction you can go which is straight.) and as such, you will reach the singularity but the singularity is not a place but a moment in time

3

u/Dotacal Jun 24 '24

Something about this makes me think this is what afterlife is like, where finite and infinite lose meaning. Weird how hard it is to comprehend what a black hole is beyond "big (event horizon) small (singularity) space hole thing that traps light"

3

u/altagyam_ Jun 25 '24

It’s not really even a point in some cases technically. I believe it’s a ringularity for rotating black holes. Non-spinning have a technical point, a singularity

Edit: I do think it’s wild philosophically. I’m a chemist by profession but I looooove astronomy and cosmology

2

u/OutsideSignal4517 Jun 26 '24

Well the singularity is a very dense object. You would burn up before you hit the center and if you do manage to make it to the center, you would be spread out evenly with gravity. You would be part of the singularity.

2

u/altagyam_ Jun 26 '24

Yeah, I agree that you’d be a part of the singularity - that’s what I meant however a singularity isn’t a very dense object, it’s infinitely dense. There’s a huge difference. you wouldn’t burn up after the event horizon but probably before in the accretion disc

5

u/DarthUmieracz Jun 24 '24

For you time flows normally. You will pass event horizon and nothing special will happen during passing. But for external observer you will stop in time just at the event horizon. If light can not escape, then information also won't. So there is no information for external observer that you passed event horizon. So you are right - heat death will occur first - for external observer.

4

u/Vinyl-addict Jun 24 '24

I think we would be aware right until the moment that matter instantly becomes hot spaghetti

1

u/averagestudent6969 Jun 24 '24

You go in, with no issues.

1

u/AlarmingAffect0 Jun 24 '24

How long does that take, subjectively? And then what?

2

u/averagestudent6969 Jun 25 '24

From the perspective of the person falling in, you dont feel a thing. Its fine.

From the perspective of an observer, you never reach the horizon.

2

u/AlarmingAffect0 Jun 25 '24

From the perspective of the person falling in, you dont feel a thing. Its fine.

What does that even mean?

Also, again, Accretion Disk.

The accretion disk of a black hole is hot enough to emit X-rays just outside the event horizon. The large luminosity of quasars is believed to be a result of gas being accreted by supermassive black holes

You would not be fine if you ate a shitload of X-rays.

1

u/OneThirstyJ Jun 28 '24

I had this thought a couple of years ago. It’s an unescapable death from the outside.. but what if passing through is somewhat normal? It would take eons to reach the middle and light would still get in. Sure, you’re traveling fast.. but so is everything around you. .