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Earth’s inner core stopped spinning? A new study suggests it may soon start turning in reverse

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The rotation of Earth’s inner core may have paused and it could even go into reverse, new research suggests. The Earth is formed of the crust, the mantle and the inner and outer cores. The solid inner core is situated about 3,200 miles below the Earth’s crust and is separated from the semi-solid mantle by the liquid outer core, which allows the inner core to rotate at a different speed from the rotation of the Earth itself. Earth’s inner core stopped turning? A new study suggests it may soon start turning