What's beyond the universe?

Question

Okay...I'm aware of the theories that say: Space-time is curved onto itself and is finite without boudnary.

But consider this hypothetical situation:


if someone could tear space-time and somehow escape through this ....similar to the Earth analogy ...if Space-time were a sphere then you could just accelerate upwards and escape the topology of the sphere.

If this could happen, what would we observe? Is it just purely a philosophical inquiry ...would there be "nothingness"
would it be timeless ---what would a timeless nothingness entail??? immortality?


???

Answer 1

pure ifinity......................

Answer 2

There is nothing known to physics corresponding to a "tear" that would allow you to escape to a continuum of greater dimensionality. You can stretch space as much as you want, though. The closest thing to what you're proposing consistent with General Relativity is a worm hole. One could, hypothetically speaking, connect to another universe whose space-time manifold in independent of ours, except for the hole connection, of course.

I'm not sure what constraints there are of the dimensionality of the other universe. Current thinking in string theory is that the fact that 4 macroscopic space-time dimensions somewhat arbitrary, but I don't know if GR can be extended to connect to a universe with a higher number. I don't even know if anyone has generalized GR beyond 4-D. It might be a good PHD thesis.

Answer 3

Oh one of the questions I try not to let my drive myself crazy with! What is beyond it? What does it exist in? Human minds just are not wired to be able to grasp an actual concept of infinity and we're smart enough to know we can't understand this stuff, so it drives us nuts! lol

Answer 4

There is no known answer to this.