Bizarre portal-like ‘ring wormholes’ could let you time travel

Wormholes are sometimes regarded as tunnels by means of space-time with black holes for entrances, however they might theoretically be flat as an alternative, like a door into one other location and even one other universe. These are often called “ring wormholes”, and in some circumstances they may additionally turn into time machines.

Ring wormholes, first proposed in 2016, are made up of a string of unique matter with adverse power – a property that’s attainable because of quantum results, however solely, so far as we all know, …