How old is the universe?

Black holes and dark matter can be the same. Proposing an alternative model for how the universe came to be, astrophysicists suggest that all black holes—from those as tiny as a pin head to those covering billions of miles—were created instantly after the Big Bang and account for all dark matter.

The Man Who Brought Us the Universe: 4 Things We Have Thanks To Carl Sagan

The James Webb Space Telescope should show us what the universe looked like as a baby