/r/blackholes

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A place to post and ask questions about the phenomena known as Black Holes

/r/blackholes

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4

living in a black hole

i watched a video (https://youtu.be/F1W9TtshrQI?si=3vk5SKltlOUKm9qT) and it said you could live in a black hole if it’s big enough and watch the universe evolve. but like how would it be in there? wouldn’t you get hungry or bored or sad or want to go for a walk? or what if you have to breathe

2 Comments
2024/04/28
15:33 UTC

3

Can anything really cross a black hole event horizon?

After watching interstellar I have been thinking about the time dilation effects on things orbiting a black hole.

When the characters in the movie go to millers planet, the astronauts who go to the surface of millers planet experience time moving very normally until they get back to the orbiting craft and realise that nearly 30 years has passed in what seemed to the landing party as a few hours.

I’m assuming here that to the astronaut on the orbiting ship, he would observe the landing party moving extremely slowly. To the landing party they would observe things moving on the orbiting ship very quickly. Is this correct?

If we had two observers, one observer was approaching the event horizon of a black hole and the other observer orbiting the black hole.

To the orbiting observer the observer approaching the event horizon would move slower and slower and even appear to stop altogether as they approached the event horizon. The closer they got the more they would appear to slow down, subsequently taking an almost(?) infinite amount of time to reach and cross the event horizon.

To the observer approaching the event horizon looking back at the orbiting observer (and the rest of the universe) it would appear to them that the orbiting observer and the universe was increasingly moving faster and faster. The closer they got to the event horizon the faster they would observe time to be progressing in the rest of the universe.

Is this correct? If not, what am I missing? If I am then surely it means that it’s impossible to cross the event horizon? The observer approaching the event horizon would look out and watch the universe age to infinity (maybe even end) whilst the orbiting observer would watch the watch the descending observer stop forever just before reaching the event horizon.

3 Comments
2024/04/27
06:32 UTC

4

Large Blackholes

Am I the only person who thinks it’s not a coincidence that every single galaxy has a large black hole in the centre.

I’m not an expert or even a reliable knowledge source when it comes to black holes - but if it’s true that every galaxy has a large blackhole in the middle that could hypothetically suck everything out of existence - as strange as this sounds - it seems like they could be a way to reset or remove the universe 😂

JUST A THOUGHT

4 Comments
2024/04/27
00:08 UTC

4

Are closer black holes more difficult to detect?

Just heard someone state that black holes which are closer to us are harder to detect, I can't find anything supporting this statement and wanted to make sure if it does even make sense.

5 Comments
2024/04/21
19:11 UTC

4

Is dark matter just black hole masses locked in time?

These thoughts keep me up at night. See below:

I imagine time is a 4th axis that connects finite (Planck measurement) x, y, z, graphs. In order to change coordinates on x, y, or z then the entity MUST traverse on the 4th time axis.

Anything smaller than a Planck measurement cannot exist in time and is considered a black hole… so it cannot receive a new 4th axis coordinate thus cannot move on x, y, or z.

Wouldn’t this mean that the mass of a black hole is locked in space and time and not be able to interact with anything other than gravity? Can the contents be locked somewhere in space but mass outside the event horizon in OUR universe still moving around it? Could the contents of an event horizon be the dark matter locked in place somewhere else (almost like if an event horizon and the black hole singularity are in two different x, y, z, t places)

Plenty of holes to poke in for sure but let me know if I can clarify anything more.

0 Comments
2024/04/14
16:38 UTC

1

Paradise machine model

0 Comments
2024/04/10
12:50 UTC

2

Is it possible to measure a black hole's gravitational force in m/s²?

5 Comments
2024/04/07
09:57 UTC

3

How is space minus 453 degrees when the sun is 10,000 degrees? Also, how is space completely void of light but somehow the sun lights and heats the earth every single day? Please explain to me how we get sunlight and heat but space doesn’t

4 Comments
2024/04/06
10:11 UTC

3

Is it possible that the Big Bang came from an evaporated black hole?

Hawking radiation slowly evaporates the mass of a black hole, but as the black hole loses more and more mass, the evaporation process speeds up.

A black hole that is unthinkably massive could contain all the matter in our known universe and eject it rapidly into space

3 Comments
2024/04/05
02:38 UTC

1

Question about a article I saw online

So I get lots of science articles in my news feed as I have a general interest in things science and astronomy related, and every once in awhile I will get a article saying something to the effect of scientists and black holes in an experiment, while I generally assume whenever a scientist does anything with a black hole, especially when it involves the word simulation, it's done inside of a computer. Should I assume that anything and everything done with a black hole is inside of a computer simulation, or can scientists create or mimic the effects of a black hole outside of computer, using real atoms?

4 Comments
2024/04/03
20:46 UTC

2

Could someone working in a supercollider age slower than somebody who isn’t?

If a supercollider can create quantum black holes, even in theory, could they slow down time enough, even a millisecond per year, that someone would age slower working near one?

1 Comment
2024/03/31
14:08 UTC

6

The Final Frontier: What's at the End of Space?

0 Comments
2024/03/29
02:18 UTC

4

The Enigma of Black Holes: A Deep Dive

0 Comments
2024/03/29
01:20 UTC

5

Falling in a black hole in an indestructible spaceship

Ive been deep in thought about black holes cause ive just whatched interstellar, sick movie, but it got me thinking. So suspend belief for a second and pretend you can get beyond the event horizon in an indestructible spaceship, without getting turned into plasma by the ecretion disk or the ridiculous tidal forces or the photosphere (yes irl you would get absolutely destroyed on an atomic level before you even got there) once you've travelled past the event horizon things would get very weird. If you're faceing the center and you raise your hand up in front of you you wouldn't see anything, you need light to enter your eyes to see and all the light from that light bulb above you is now curving towards the singularity, it may hit you sure but it doesn't bounce back to you eye now arching towards the singularity. You have to put yourself between the light and the singularity to see anything and what you see would be blueshifted. when you raise your hand you'd simultaneously see the back and front of your hand at the same time cause the light can't move away from you anymore and it curve back in on itself but the other side of your hand would be redshifted as light slows down thanks to the pull of the singularity. Would be a really cool rainbow like lightshow before everything goes black, you get turned into spaghetti and crushed to the windscreen of your indestructible spaceship.

3 Comments
2024/03/26
19:30 UTC

0

Magnets for antimatter?

So suppose we forget what's happening with everything we know now about the laws of nature and perhaps, fundamentally, and say that the reason that most matter is stable in the universe is because black holes are actually keeping the antimatter that should have been abundant in our universe, from annihilating it. Not that the black hole is made from antimatter but that the function of super massive black holes run differently then we can comprehend. Less that it eats light and matter, but the powerful beasts keep secrets where we can't see, and play a sort of, white blood cell role, to the cosmos. A magnet of sorts, perhaps gravity playing a weird part being it might effect antimatter a different way, maybe that's the future to light speed travel seeing we could theoretically build a gravity feild to travel at speed that would be insane, to say the least.

I'm no scientist but I've been a lover of anything related to the stars. Truly fascinating we know so little and this is just hypothetical but I thought to myself, why not? someone tell me I'm not crazy for thinking this, if you understand what I'm trying to mean.

2 Comments
2024/03/13
12:17 UTC

7

Why do we only see Light around a black hole in one axis?

So, if my understanding is correct, black holes attract matter to themselves, including light, in all directions right? So why is it that we only see a ring of light on a black hole, and not a sphere? Also, if light is going into a black hole and not being reflected, how can we see it at all?

10 Comments
2024/03/08
12:47 UTC

12

Hi, I'm 11 years old and I made this blog post about black holes. I would love if you gave me any feedback.

4 Comments
2024/03/05
21:23 UTC

2

PhA vs Ton6-18

is phoenix A confirmed to be larger?

0 Comments
2024/03/04
11:50 UTC

11

Can we see in a black hole?

Assuming humans found a way to travel to the centre of a black hole completely unaffected, would we be able to see anything? Would it be extremely bright; similar to looking at the sun, just thousands of times brighter. If light enters a black hole, but cannot leave it then surely it is flying around inside. Or at least densely packed in the centre. Is there even any way for us to decide?

8 Comments
2024/03/03
18:06 UTC

17

Where exactly does the matter sucked into black holes “go?” (or does it go anywhere at all?)

I’m no astrophysicist, but I am somewhat of a hobbyist and at least know more than the average bear (like the fact that black holes are not actual holes, but super dense spheres). As such, black holes both fascinate and boggle my mind.

I was listening to an episode of the podcast Ologies about black holes, and realized I don’t really understand some fundamentals.

  1. Where does the matter go? Do we know yet whether the matter just compounds down and becomes infinitely dense, or if it seems to get spit out somewhere else (e.g., white holes)?
  2. If the matter does just compound and become more dense, does that increase the gravitational pull of the black hole so that it “eats” more matter even faster (and could get so large/dense that it hypothetically eats up entire galaxies/universes)? Or does the black hole reach some kind of homeostasis and maintain a constant “strength?”

TIA for any insight!

8 Comments
2024/02/28
19:21 UTC

2

Proverbial Black Hole Rat’s Nest

Christopher B.W. Fair Email: Chris.tk.fair2@gmail.com

Wednesday, February 28, 2024 5:57am ————————————————————

Abstract

A thought experiment that makes specific assumptions and generalizations to proposes the structure of the universe is not a mostly static surface but rather offers a view of a fundamentally chaotic and complex substrate structure of the universe that provides a (albeit not entirely formed) theory of the nature of Dark Matter and Dark Energy. This experiment is intended to offer an alternative to a static shaped universe.

Keywords

Black Holes, Complementarity, Dark Energy, Dark Matter, SMBHs (Supermassive Black Holes), Cell Membrane, Electromagnetic, Surface Roughness, Boundary Measurements, Fundamental Particles, Cosmology

————————————————————

Introduction and Background

Stephen Hawking points out black holes appear to violate a tenant to quantum theory which says that quantum information cannot be destroyed [1]. This went on to become known as the “Black Hole Information Paradox.” Susskind offered his “Black Hole Complementarity” hypothesis to explain the paradox. He suggested two different complementarity models (one from the outside perspective and one from inside perspective) to explain quantum information’s interactions with black holes [2]. Light’s competing particle and wave interpretations of the double slit experiment is an example of physical complementarity.

This paper is not intended to be a review, a reference, or even an accurate representation of physics as we understand it. The following presupposes complementarity in physics as defined as two different but equally valid perspectives of a single physical object or event.

The intent of this paper is to demonstrate a paradigm shift in the way we perceive the nature and foundation of our universe from a static shape perspective to one of a chaotic universal framework in constant flux.

Origins of Gravity

We are going to assume Chandra’s synopsis outlined in his Origin of Gravity [3] to be the closest to correct explanation for gravity’s seemingly mediocre rise in influence.

Discussion

The shape of the universe is one of physicists’ current lines of inquiry but our contemporary technology and understanding of physics are making the question “what shape do we live on/in?” a difficult question to answer. For this, instead we imagine the differences between a flat piece of paper, a Pringle, and a salad bowl with galaxies sprinkled over the surfaces. These are closer to the shapes more commonly among theories today. What I’m suggesting here instead would be closer to the surface of a lake during a hail storm. Chaotic, dynamic, but all together there.

The fabric of space time is bumpy, jostling, and chaotic. What is responsible for this chaos you ask? The SMBHs at the center of most [spiral] galaxies are A) within this universe and as such, contain all the information it has consumed to date and B) the catalysts for the very same singularity at the beginning of the Big Bang creating their own “bangs”. However, we’re going to suppose Tatum’s new complementarity interpretation of black hole interior “space-and-time-reversal” framework outlined in Black Hole Complementarity in Terms of the Outsider and Insider Perspectives [4]. Here, the space and time dimensions are flipped and as their space expands. Occasionally they cross over or through our time (4th) or even one of many higher dimensions within our universal frame of reference. Let’s also consider, for the sake of ease, Black Hole Spray [5] as the primary cause for a quick decimation of Black Holes through the early universe. We’re unable to see any of this matter, being in a different dimension than the ones we experience daily. Let’s call this Dark Matter. There are also plenty of collisions between particles and antiparticles [6] in this “expansion chaos” releasing oodles of energy. Again though, because it is within a distinctly different dimension, we’re unable to see or measure the energy. Let’s call this Dark Energy.

This line of thought also implies that our universal frame of spacetime is the result of one of a higher dimensional universe’s black hole’s singularity. Up to infinite universes are possibly creating and being created by and within themselves to such a degree that when viewed from enough dimensions removed (zoom out) they’re clearly part of a singular structure combining to create the Universe. This makes measuring the size of the universe akin to measuring Norway’s coastline [7].

Hopefully you can picture a more “fluid in crisis” surface for the shape of the universe in your mind. Hold that image there and just make the fluid a ferrofluid, and start introducing various magnets and currents and have them move and spin [8]. Now sprinkle some galaxies on that very dynamic surface. This would be a closer approximation to the underlying chaos that is our universe than what a flat plane model is.

Summary and conclusion

Holding onto a static view of our universe’s underlying structure may be preventing us from seeing the true, seemingly chaotic, unintuitive structure of our universe. Other than a boiling river during a hailstorm of wizards [9], the closest analogy we have for a structure of this complexity and variability would be akin to something like multiple surfaces of cell’s membranes [10] several billion times over and all existing within and without one another in and out of time with respect to each other. But also all as one, all at once.

In following along with this… whatever this was… hopefully the reader was able to see a universe built on, in, and around itself. Of itself. And ultimately contained within itself.

Conflicts of Interest

The author declares no conflicts of interest regarding the publication of this paper.

References

[1] Hawking, S.W. (1976) Physical Review D, 14, 2460-2473 https://dx.doi.org/10.1103/PhysRevD.14.2460

[2] Susskind, L. and Lindesay, J. (2004) An Introduction to Black Holes, Information and the String Theory Revolution: The Holographic Universe. World Scientific Publishing Co., Singapore. https://doi.org/10.1142/5689

[3] Chandra, K.P. (2023) On the Origin of Gravity and the Emergence of a Black Hole. Journal of High Energy Physics, Gravitation and Cosmolo- gy, 9, 720-724. https://doi.org/10.4236/jhepgc.2023.93059

[4] Tatum, E.T. (2024) Black Hole Complementarity in Terms of the Outsider and Insider Perspectives. Journal of Modern Physics, 15, 184-192. https://doi.org/10.4236/jmp.2024.152010

[5] Rom, R. (2023) The Black Hole Spray and the Cosmic Web. Journal of High Energy Physics, Gravita- tion and Cosmology, 9, 519-523. https://doi.org/10.4236/jhepgc.2023.92042

[6] El-Sherbini, T.M. (2022) A Cosmological Model for the Early Universe: The Formation of Fundamental Particles. Journal of High Energy Physics, Gravitation and Cosmology, 8, 1073-1083. https://doi.org/10.4236/jhepgc.2022.84075

[7] Cao, L. (2013) Riemann Boundary Value Problem of Non-Normal Type on the Infinite Straight Line. Applied Mathematics, Vol.4 No.8 https://www.scirp.org/journal/paperinforcitation?paperid=35589

[8] Lu, W., Jin, J.F., Lin, Z., et al. (2010) A Simple Design of an Artificial Electromagnetic Black Hole. Journal of Applied Physics, 108, Article ID: 064517. https://doi.org/10.1063/1.3485819

[9] Yousaf, M. Usman, S. (2015) Role of Surface Roughness during Natural Convection. World Journal of Engineering and Technology, 3, 140-148 http://www.scirp.org/journal/wjet http://dx.doi.org/10.4236/wjet.2015.33C021

[10] r: Sieber, M., Hanke, W. and Kohn, F.P.M. (2014) Modification of Membrane Fluidity by Gravity. Open Journal of Biophysics, 4, 105-111. http://dx.doi.org/10.4236/ojbiphy.2014.44012

I’m wondering if anyone could make heads or tails out of this or if it really does qualify as incoherent rambling. I know it’s incomplete but could the thoughts be followed?

Written poorly on my iPhone

1 Comment
2024/02/28
13:20 UTC

3

Magnetic field behavior in and around black holes

I know exactly zero things about this topic specifically and I would like to know as much as my mind will allow. Mostly because I’m curious but also because I have a short story in mind but it would be irresponsible to write a story full of inaccurate physics. I’d rather have trouble getting the story to fit the physics than to have a good story that makes up whatever physics it needs in that moment.

If anyone has a paper they can point me towards (preferably open source) or an article I would really appreciate it.

3 Comments
2024/02/26
18:15 UTC

4

Isn't it far more likely that black holes are just massive bodies similar to neutron stars with just enough gravity to prevent the escape of light, but not some esoteric concept like runaway collapse and a dimensionless singularity?

As above. Isn't it just the most massive of bodies without disappearing matter from the universe in a singularity?

15 Comments
2024/02/25
22:42 UTC

2

My theory of the universe

We live in an infinite omniverse. And within those many places in this large place are black holes. But what if.. black holes are doors? What if.. the omniverse is many universes? With those universes having a massive number of black holes. What if all universes touch each other, or have a small bridge to the next one? What if the door to those new universes are black holes, and spaghettification is just the transition of your matter entering a new universe, so that your dust creates a star? What if Hawking’s Radiation is new matter from certain universes being transferred? And maybe there was a big bang. But a big bang happens after a black hole in one universe is formed, and needs a universe to connect to. This is my theory of what the universe really is. I mean, nothing escapes a black hole. The matter doesn’t return. Every individual black hole in our universe connects to a new one. Some black holes in our universe may share a universe to visit with others, but roughly, this is an infinite chain of universes in a large omniverse.

4 Comments
2024/02/19
21:36 UTC

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