What is the evidence that the sun is a relatively young star in the universe?

Answer 1

Though no authority on this subject I would guess that color would suggest that our sun is a relatively young star. Yellow being a much younger star than say the blue or red stars which are much hotter, so suggesting that they are much older. There are some who would suggest that our sun has used up all of its energy and is cooling down making it much older that I first suggested.