What if the Big Bang wasn’t the beginning? Our research suggests it may have taken place inside a black hole

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

The Big Bang is often described as the explosive birth of the universe — a singular moment when space, time and matter sprang into existence. But what if this was not the beginning at all? What if our universe emerged from something else — something more familiar and radical at the same time?

In a new paper, published in Physical Review D, my colleagues and I propose a striking alternative. Our calculations suggest the Big Bang was not the start of everything, but rather the…

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