Ask Ethan: Did time run slower in the early Universe? - Big Think
- Ask Ethan: Did time run slower in the early Universe? Big Think
- Wild Astronomical Discovery Confirms Einstein Was Right About Time Itself Inverse
- Why the day is 24 hours long: Astrophysicists reveal why Earth's day was a constant 19.5 hours for over a billion years Phys.org
- The Early Universe Ran in Slow Motion Universe Today
- Why the day is 24 hours long: The history of Earth's atmospheric thermal tide, composition, and mean temperature Science
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