Does a rotating black hole offer a gateway into an entirely different universe?

This video examines the Penrose diagram of a Kerr spacetime, illustrating how the mathematics of rotating black holes suggest that space does not simply terminate at a singularity, but potentially opens into other regions of existence.

When physicists apply the principles of general relativity to model a black hole with angular momentum, the resulting equations reveal a complex geometry. Rather than the gravitational collapse ending in a total void, the math allows for a trajectory that continues beyond the initial point of entry.

This path leads away from the starting universe, effectively mapping a multiverse structure. The visual representation, known as a maximally extended Penrose diagram, serves as a guide to these theoretical regions that exist outside our own, demonstrating that the gravitational pit of a rotating black hole may function as a bridge to elsewhere.

Source: Mapping the Multiverse