Wormholes Let You Travel Back In Time

    • Indiatimes
    • Publish Date: Apr 25 2019 12:52PM
    • |
    • Updated Date: Apr 25 2019 1:04PM
Wormholes Let You Travel Back In Time

But they aren't shortcuts to another galaxy or universe...

Wormholes are a popular trope in science fiction, appearing as tunnel-like bridges between two points in space time.

These aren't ever really explained, at most attributed to passing through a black hole somehow, but they always allow spacefarers to take a shortcut.

Wormholes aren't purely fictional creations however, their portrayal in sci fi movies and literature draws from the real life Einstein-Rosen bridge. This is a theoretical structure that connects two points in spacetime. It's been theorized because it's compatible with Einstein's general theory of relativity, but the phenomenon has yet to be proven to exist.

To understand the concept, think about a sheet of paper with two points marked on it. They're both points in linear spacetime, and the line you draw to connect them is the path you'd have to take to travel from one point to the other. In that case, a wormhole would be if you folded the paper in half, so the points align, and then simply travel through spacetime.

We're not even sure what kind of travel to expect from wormholes. They could theoretically let you travel just a few metres in space or a few billion light years, or could even let you move through time or between universes.

Harvard physicist Daniel Jafferis has a thing or two to say about wormholes now. Firstly, that they exist, which is great news! Secondly however, he suggests they're not likely to be good shortcuts for space travel.

"It takes longer to get through these wormholes than to go directly, so they are not very useful for space travel," Jafferis said in a news release.

The inference is part of Jafferis' new theory, presented at the 2019 American Physical Society April Meeting in Denver. He and his co-researchers, Ping Gao from Harvard and Aron Wall from Stanford University, used quantum field theory to simulate how wormholes could exist and how we could travel through them.

Instead of being a shortcut though, these ripples in spacetime might actually take us longer to traverse, meaning they won't help us navigate the final frontier.


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Neha Varadharajan The Orbis School

Kinda good news, don''t you think?

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