Science

Two University of Alberta physicists traced millisecond swings in Earth’s length of day to the inner core’s gravitational tug on the mantle, and their model suggests the solid core deforms in about 10 years

A day on Earth isn't exactly 24 hours. Physicists at the University of Alberta now say the solid inner core's gravity explains a big part of why Earth's length of day keeps wobbling. Huifeng Zhang and Mathieu Dumberry…

By Adrian Villellas · 53 minutes ago

Computer model of flow and magnetic field inside Earth's core around the inner core, linked to changes in Earth's length of day

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