historyMay 23, 20262:35pending
1661: "The Earth's Core is Younger than its Surface"
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Interesting Things with JC #1661: "The Earth's Core is Younger than its Surface" – A clock at Earth’s core runs slightly slower than a clock on the surface, and over 4.5 billion years that tiny relativity effect leaves the center of the planet about two and a half years younger than the ground above it.
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