Quasars prove time ran more slowly after a the Big Bang than is does today
(phys.org)https://phys.org/news/2023-06-quasar-clocks-universe-slower-big.htmlScientists estimated a standard period or “tick” of a quasar and then observed quasars up to 12 billion light years away at an earlier era of the universe to calculate that time progressed at 1/5 the rate it does now, due to time dilation.
Detection of the cosmological time dilation of high-redshift quasars, Nature Astronomy (2023)
www.nature.com/articles/s41550-023-02029-2