January 26, 2023
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0:46Now PlayingThe earth's inner core may have stopped turning and could go into reverse, said researchers who studied seismic waves from decades of earthquakes.
RELATEDGreen comet to pass Earth, won't be back for another 50,000 years
Planet Earth's inner core may have stopped turning and could go into reverse, according to a study published this week.
Earth is formed of three layers: the crust, the mantle, and the core.
Made almost entirely of metal – specifically, iron and nickel, its inner core rests 3,200 miles below the crust, separated from the mantle by the liquid outer core which allows the inner core to rotate at a different speed from the planet's rotation.
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