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A gravitational battle within the Earth is changing the length of days
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A gravitational battle within the Earth is changing the length of days

So: Earth's days aren't perfectly steady in length, and scientists have been tracking tiny shifts for decades. It turns out these small changes come from a fascinating tug-of-war deep inside our planet, between the inner core's gravity and the mantle's forces. The inner core spins at a different rate, causing gravity to try and realign it, which subtly affects Earth's rotation speed. This new study offers a fresh explanation for these gradual shifts, showing how Earth's inner layers play a quiet but powerful role in our daily rhythm.
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