New research suggests that black holes may act as tunnels to other worlds.
Black holes are places where matter has been squashed to such a density by gravity that the normal laws of physics break down.
The new theory rejects the view that at the centre of a black hole spacetime curves to an infinite point known as a “singularity” and all matter is destroyed.
Instead, it proposes that the heart of the simplest type of electrically charged, non-rotating black hole, is a very small spherical surface. This acts as a “wormhole” – a doorway or tunnel through the fabric of spacetime of the kind seen in countless sci-fi stories.