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GeoGeoGeoGeo t1_j5sojkg wrote

Reply to comment by thebiologyguy84 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

It's linked to rotational currents in the liquid outer core, not the solid inner core.

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