Time Travel

Which time travel movie got the rules right? According to experiments using a quantum time travel simulator, reality is “self-healing,” so changes made to the past won’t drastically alter the future you came from – at least, in the quantum realm.

Wormholes are a sci-fi staple – but could they be science fact? Surprisingly they fit into current physics models, although no evidence has ever been found. Now, researchers have outlined how we might go about looking for wormholes in our own galaxy.

Renowned physicist Stephen Hawking, who passed away in March, is set to be interred in Westminster Abbey in June. In a final show of the man’s wit and dedication to the weirder realms of physics, it seems that time travelers are on the guest list.

Researchers at the University of Queensland, Australia claim to have simulated the behavior of a single photon traveling back in time and interacting with an older version of itself, in an effort to investigate how such a particle would behave.

This week, Google announced a new Street View feature. If there's a clock in the upper left-hand corner of an image, it means you can see what that scene looked like up to seven years ago.

At this juncture in time, humanity does not know how to travel into the past, or even if such a concept has any meaning. So if you are an astrophysicist who wants to discover something about time travel, what do you do? You look for time travelers on Twitter.