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What is a wormhole? © Science Photo Library

What is a wormhole?

Published: 16th February, 2022 at 04:00
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You'll often see wormholes in science fiction as a way to travel across the Galaxy.

A ‘wormhole’, first proposed by Albert Einstein and Nathan Rosen in 1935, is a theoretical ‘bridge’ through folded space-time, which could provide a means of traversing large distances instantaneously.


Mathematically, wormholes appear to be highly unstable and would likely collapse as soon as they form, as well as being vanishingly small. And they can only form with so-called ‘eternal’ black holes – ones which do not interact with matter or lose mass through Hawking radiation.

So, most scientists would admit that wormholes, although a useful and interesting theoretical possibility, probably don’t exist in reality.

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Asked by: Tam McMillan, Fife


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