Could we actually use wormholes for space travel? New study explains

Written by on November 15, 2021

A new theory has attempted to explain whether wormholes, a theoretical connection of two separate points in spacetime, can be used as a viable solution to space travel by future humans.

But what are wormholes, exactly?

Discovered by legendary Jewish physicist Albert Einstein and American-Israeli physicist Nathan Rosen, who coined it as the term “Einstein-Rosen bridge,” a wormhole is a hypothetical passage through spacetime allowing for a rapid, instantaneous journey between two distant points in spacetime.

Although these wormholes have never been observed, they are compatible with Einstein’s theory of general relativity.

Before a new study by physicist Pascal Koiran, it was widely believed a form of theoretical exotic matter would be needed to keep a wormhole open, as it would disappear quickly after its creation without a force keeping it from being shut.

Now, a study, published in the scientific journal arXiv in October, proposes wormholes might be more stable than previously thought.

Albert Einstein (credit: PIXABAY)Albert Einstein (credit: PIXABAY)

Koiran proposes to analyze wormholes using not the popular Schwartzchild metric commonly used to analyze black holes, but the Eddington-Finkelstein metric.

The study found that by using the metric, a particle could be documented crossing the event horizon in the entrance of the wormhole, go through it and reach the other side in a finite amount of time.

That means the path of a particle passing through a hypothetical wormhole could be more easily traced using the Eddington-Finkelstein metric. 

If particles can cross through a wormhole and reach the other side unharmed, perhaps someday humans might be able to travel through a wormhole and reach points in spacetime that are currently unreachable using current forms of space travel.

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