Compare that to the size of the observable universe which is a sphere with a diameter of 5 x 10^23 kilometers. Or to the number of stars in the observable univ

Compare that to the size of the observable universe which is a sphere with a diameter of 5 x 10^23 kilometers. Or to the number of stars in the observable universe - 200 x 10^21. One star / (roughly corresponding) solar system is unimaginably huge and then there's so many of them. In comparison to some of these other measures, the age on the order of 10s of billion years seems actually surprisingly modest.