Are black holes the actual edge of the universe? Because spacetime is another dimension, I would assume the universe doesn’t have perceived corners or edges. At least humans cannot perceive it. The edges are the black holes scattered across the universe. Is that right?
Asked
Active
Viewed 286 times
1 Answers
1
Are black holes the edge of our universe ?
No, at least not in the way that physicists and mathematicians understand an edge ("boundary" would be a more technical term). An edge or boundary to a surface is something that cannot be crossed without leaving the surface - but we know that the event horizon of a black hole can be crossed. We can even define a spacetime co-ordinate system which is smooth at the event horizon, so the event horizon is not even like a "crease" in spacetime.
It is true that we don't know what happens at the centre of a black hole because our current theories of physics break down at that point (which is popularly called the black hole's singularity) - but that is a shortcoming of our current physics. We still have no reason to think that there is an "edge" to spacetime anywhere inside a black hole.
gandalf61
- 63,999