Quasar ‘clocks’ show Universe was five times slower soon after the Big Bang
www.eurekalert.org
Quasars are the supermassive black holes at the centres of early galaxies. Scientists have unlocked their secrets to use them as ‘clocks’ to measure time near the beginning of the universe.
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The original was posted on /r/ufos by /u/ImInTheAudience on 2023-07-03 16:13:00+00:00.

Original Title: Astronomers observe time dilation in early universe. Events appeared to unfold five times slower when the universe was a mere 1bn years old, or about a tenth of its present age, because of the way the expansion of the universe stretches time.