Can You See a Parallel Universe Through a Black Hole?

[cashflow]

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?

 

[ajgrebel]

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.

 

[Nabeshin]

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.

 

[Ryan_m_b]

there's an annoying idea floating around the interwebz and even IRL that inside a black hole is a gate way to another universe. there's no evidence for that at all, any more than the statement "inside a black hole you can find unicorn gold"

 

[L2E]

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)

 

[George Jones]

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.

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

 

[stevebd1]

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.

 

[George Jones]

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.

 

[cashflow]

Thanks everyone for your answers. That's what I was wondering about. So, do they exist?