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jpipersson t1_j5n9r4m wrote

Reply to comment by Redbeardroe in Earth's inner core seems to be slowing its spin according to new research published in Nature Geoscience. The study authors suggest this might be part of an approximately 70-year cycle where the core speeds up and slows down relative to the rest of the planet. by shiruken

>So is the ELI5 on this essentially the earths core stopped rotating and is about to reverse?

No. This is not what it says. Reread more carefully. Perhaps also read something about the conservation of angular momentum.

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