Can People Time Travel?

Can People Time Travel? General relativity. Time travel to the past is theoretically possible in certain general relativity spacetime geometries that permit traveling faster than the speed of light, such as cosmic strings, traversable wormholes, and Alcubierre drives. Does the past still exist? In short, space-time would contain the entire history of reality, with each

How Can We Time Travel?

How Can We Time Travel? Time travel is possible based on the laws of physics, according to new calculations from researchers at the University of Queensland. But time-travelers wouldn’t be able to alter the past in a measurable way, they say — the future would stay the same. What are the rules of time travel?