Wormholes which might be surrounded by matter, just like the ring that gathers round a black gap, may create unusual rotating clouds of scorching plasma. Something that falls in a single finish may shoot out the opposite at 200 million kilometres per hour, and even sooner if the wormhole is gigantic.

A wormhole is a tunnel between two areas in space-time. The best variations of those hypothetical objects have black holes as “mouths” on both finish of the throat connecting them – nothing can escape as soon as it has…