Can You See a Parallel Universe Through a Black Hole?

In summary: Not sure about the difference in what you would see through a static black hole but from the link its really nothing special. Highly doubt you would see a parallel universe regardless of any circumstance one might find themselves in.
  • #1
cashflow
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I read somewhere that in a particular type of black hole, an instant before falling past the event horizon, you can see light from a parallel universe. Now I can't find the link. Was it the Schwarzschild black hole? Can't remember.

What is the validity of that theory?
 
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  • #2
http://cosmology.berkeley.edu/Education/BHfaq.html#q3

not sure about the difference in what you would see through a static black hole but from the link its really nothing special. Highly doubt you would see a parallel universe regardless of any circumstance one might find themselves in.
 
  • #3
cashflow said:
I read somewhere that in a particular type of black hole, an instant before falling past the event horizon, you can see light from a parallel universe. Now I can't find the link. Was it the Schwarzschild black hole? Can't remember.

What is the validity of that theory?

What you read was garbage.
 
  • #4
Theres an annoying idea floating around the interwebz and even IRL that inside a black hole is a gate way to another universe. Theres no evidence for that at all, any more than the statement "inside a black hole you can find unicorn gold"
 
  • #5
doesn't sound real. It is likely a 'theory' based on no scientific data (ie a guess or something someone would like to be real)
 
  • #6
cashflow said:
I read somewhere that in a particular type of black hole, an instant before falling past the event horizon, you can see light from a parallel universe. Now I can't find the link. Was it the Schwarzschild black hole?

This is true for the maximally extended Schwarzschild solution. The two external universes are regions I and IV of the diagram on page 189 (pdf page 196) from the link below.
cashflow said:
What is the validity of that theory?

It is not thought to be physically realistic. For a diagram that corresponds to a black hole formed from stellar collapse, see the diagram on page 191 (pdf page 198) from the link below.

http://arxiv.org/abs/gr-qc/9712019
 
  • #7
cashflow said:
I read somewhere that in a particular type of black hole, an instant before falling past the event horizon, you can see light from a parallel universe. Now I can't find the link. Was it the Schwarzschild black hole? Can't remember.

What is the validity of that theory?

You might be talking about the Schwarzschild wormhole-

http://en.wikipedia.org/wiki/Wormhole#Schwarzschild_wormholes

Though you only see the other universe once you've crossed the horizon.
 
  • #8
cashflow said:
I read somewhere that in a particular type of black hole, an instant before falling past the event horizon, you can see light from a parallel universe. Now I can't find the link. Was it the Schwarzschild black hole?

I just noticed that this is the subject of problem 25 from chapter 12 of Hartle's book Gravity: An Introduction to Einstein's General Relativity.
 
  • #9
Thanks everyone for your answers. That's what I was wondering about. So, do they exist?
 

FAQ: Can You See a Parallel Universe Through a Black Hole?

What is a black hole and how does it work?

A black hole is a region in space where the gravitational pull is so strong that nothing, including light, can escape from it. This happens because a large amount of matter is squeezed into a very small space, creating a strong gravitational field. The size of a black hole is determined by its event horizon, which is the point of no return for anything that gets too close.

Can we see through a black hole?

No, we cannot see through a black hole. The intense gravitational pull of a black hole causes light to bend and get trapped, making it impossible for us to see what is happening inside.

Is it possible to enter a black hole and survive?

It is currently not possible for anything to enter a black hole and survive. The extreme gravitational forces would cause anything to be pulled apart and crushed. However, there are theoretical concepts such as wormholes that could potentially allow for safe passage through a black hole.

What would happen if a person fell into a black hole?

If a person were to fall into a black hole, they would experience a process called spaghettification. The intense gravitational forces would stretch and pull their body apart until it became a thin stream of particles. This is due to the difference in gravitational pull between the person's head and feet.

Can we learn anything by looking through a black hole?

While we cannot physically look through a black hole, scientists can learn a lot about the universe by studying the effects of black holes on their surroundings. Black holes have a strong influence on the motion of stars and galaxies, and studying these effects can help us better understand the laws of physics and the formation of the universe.

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