All Questions
8
questions
1
vote
1
answer
72
views
Why are there two interior regions in this diagram?
Why are there two interior regions in this diagram? There seems to be two inner horizons, and two wormhole regions.
Where do the two such regions comes from? What determines which reason someone falls ...
- 2,908
1
vote
0
answers
144
views
Is it experimentally verifiable if we are a inside a white hole that never fully formed?
There are a lot of questions on this site about white holes, but none of them specifically answer my question. Most of these questions talk about observing white holes from outside, but do not talk ...
- 29k
4
votes
2
answers
2k
views
Is it possible we live in a white hole?
Is it possible we live in a white hole? We live in a universe that is expanding at an accelerating rate – does this not seem similar to a white hole? Could a living organism interpret a black hole as ...
- 257
2
votes
1
answer
176
views
Near a white hole, what do lightcones look like?
In the vicinity of a Schwarzchild black hole, spacetime looks like this (at least according to a quick google search). Here, the centre of the black hole is supposed to be at $x=0$ and the event ...
- 77
4
votes
2
answers
263
views
Is there some physical interpretation of the parallel exterior region?
Let the maximal extension of the Schwarzschild spacetime be given. It admits as coordinates the Kruskal-Szekeres coordinates $(T,X,\theta,\phi)$ with $$T^2-X^2<1$$
since the singularity occurs at $...
- 36.4k
2
votes
2
answers
206
views
Direction of time inside Schwarzchild black holes
How do we know that the direction of increasing time inside the event horizon a Schwarzchild black hole is that of decreasing $r$, instead of increasing $r$? Both directions would be timelike, but how ...
- 349
29
votes
4
answers
6k
views
Could the black hole in the center of the galaxy be a white hole?
In the center of the galaxy there is a strong radio source which we call Sagittarius A*. Based on the high speed and orbit of nearby stars we have calculated that something with the mass of more than ...
- 1,141
-3
votes
2
answers
1k
views
Is a black hole really connecting two parallel universes? [duplicate]
What is beyond the point of singularity in a black hole and universe expands in all the three $x$, $y$ and $z$ axis?
So how can one thing be on top of another when we don't know where the end point ...
