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New research puts age of universe at 26.7 billion years, nearly twice as old as previously believed (phys.org)

submitted 2 years ago by [email protected] to c/[email protected]

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New research puts age of universe at 26.7 billion years, nearly twice as old as previously believed::Our universe could be twice as old as current estimates, according to a new study that challenges the dominant cosmological model and sheds new light on the so-called "impossible early galaxy problem."

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[–] [email protected] 2 points 2 years ago

Well, yeah. We know for example that the coupling constant of the strong, weak and electromagnetic interactions are "running", i.e. they change depending on what energies the interacting particles have.

https://www.physicsmasterclasses.org/exercises/keyhole/en/projects/running_alphas.html

That's why we assume that those interactions are all part of one single, more fundamental interaction at very high energies. We already know that the electromagnetic and weak interaction combine into a single interaction at high energies, and it looks like the strong interaction will combine with that at even higher ones.

This doesn't say anything about how those couplings change with (cosmological) time, however.