there might be something "on the other side" but there's no reason to believe that it has a 3+1 signature or is anything like the space we know at all.
There is plenty of reason to believe that, if a horizon does form, the region of spacetime on the other side will be spacetime, not something completely different.
There are some (speculative) reasons to believe that quantum effects might possibly prevent horizons from ever forming, but that would mean there is no "other side".
There is plenty of reason to believe that, if a horizon does form, the region of spacetime on the other side will be spacetime, not something completely different.
There are some (speculative) reasons to believe that quantum effects might possibly prevent horizons from ever forming, but that would mean there is no "other side".