Light from an ionized state of helium in a distant galaxy
If we take the eventual heat death of the universe to be at about 10^100 years, the era we are in with stars and so on only lasts about 10^14 years. Which means light and stars and galaxies are actually just a tiny tiny blip at the start of the lifespan of the universe. Nearly all of the life of the universe will be dark with no stars, just black holes and dark distintegrating rocks and isolated particles.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Future_of_an_expanding_universe#The_Stelliferous_Era" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Future_of_an_expanding_univers...</a><p>Sweet dreams