Physicists have finally turned a long standing thought experiment into a laboratory reality, showing that electromagnetic waves can be reflected in time as cleanly as light bounces off a mirror in ...

Time mirrors sounds like a concept straight out of a sci-fi film. But physicists confirm that time mirrors exist—and it’s not as mind-boggling as it sounds. Instead of a regular mirror that bounces ...

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a ...

It’s not just in your head — time can actually flip. Physicists in New York have pulled off what sounds like a page ripped from a sci-fi script: They’ve confirmed that “time mirrors,” a trippy ...