Enrique Gaztanaga in Singularity Hub:
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 (full preprint here), my colleagues and I propose a striking alternative. Our calculations suggest the Big Bang was not the start of everything, but rather the outcome of a gravitational crunch or collapse that formed a very massive black hole—followed by a bounce inside it.
More here.
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