Wormholes may not exist – we’ve found they reveal something deeper about time and the universe

By Enrique Gaztanaga, Professor of Astrophysics at Institute of Cosmology and Gravitation, University of Portsmouth

Wormholes are often imagined as tunnels through space or time — shortcuts across the universe. But this image rests on a misunderstanding of work by physicists Albert Einstein and Nathan Rosen.

In 1935, while studying the behaviour of particles in regions of extreme gravity, Einstein and Rosen introduced what they called a “bridge”: a mathematical link between two perfectly symmetrical copies of spacetime. It was not intended as a passage for travel, but as a way to maintain…

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