If you went into a black hole would you end up in another dimension?

The laws governing the world outside the black hole also apply to the world inside it; the only differences are that gravity is much stronger, relativistic effects are more pronounced, and light cannot escape. However, the idea that a black hole is a portal to another "dimension"—whatever that means—seems more science fiction than fact.

According to one theory, the entire mass of the universe would form a black hole that would be roughly the same size as the universe itself. This suggests that we may already be in a black hole at this very moment.

However, I haven't read the calculations behind this theory, so I'm not sure if it's a physicists' urban myth or an accurate estimate.

The fate inside a black hole is not entirely understood, but current theories suggest gravitational forces would lead to extreme spacetime curvature, possibly ending in a singularity. However, entering a black hole wouldn't necessarily lead to another dimension.