Cosmologists have found galaxies that are said to be too old to exist. Why isn’t this simply evidence that the universe is older than we think?
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It can be, but right now our understanding of galaxy formation, especially for the “first galaxies” is much poorer than our understanding of the big bang and when it occured, so the consensus in the community is that we should start with the galaxies instead
It very well could be though that the 2 or 3 measurements for the universe’s age are wrong (they’re not perfect, after all) and someone at some university somewhere is probably looking into it, but most of us are much more confident in those measurements than we are in the galaxy formation timelines
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