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?

Question

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?

In: 81

Answer 1

These newly discovered galaxies aren’t older than the universe, but they are too old for their size, because it’s thought that large galaxies did not start forming until the universe was a few hundred million years old. They’ll probably reconsider galaxy formation process, not the universe age.