Jul 3, 2023
Quasar ‘clocks’ show the universe was five times slower soon after the Big Bang
Posted by Genevieve Klien in categories: cosmology, physics
Scientists have for the first time observed the early universe running in extreme slow motion, unlocking one of the mysteries of Einstein’s expanding universe. The research is published in Nature Astronomy.
Einstein’s general theory of relativity means that we should observe the distant—and hence ancient— universe running much slower than the present day. However, peering back that far in time has proven elusive. Scientists have now cracked that mystery by using quasars as “clocks.”
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