The mysterious iron ball at the center of the Earth may have stopped spinning and reversed direction

  • The mysterious iron ball at the center of the Earth may have stopped spinning and reversed direction

    Posted by on January 24, 2023 at 10:22 PM

    A 3D rendering of the Earth’s layers, including its inner core.

    Earth’s inner core may have paused and reversed its spin, a new study suggests. Earthquakes and nuclear blasts can send seismic waves through the mysterious solid-iron core. Those waves hint that the core changed direction in the 1970s, and may be undergoing another reversal today.

    Living on Earth’s surface, we only see about 0.5% of the planet. Deep below the crust, then the hot rock mantle, then the liquified outer core, lies one of our planet’s biggest mysteries: the solid iron core at the center.

    That iron ball — Earth’s inner core — may have recently stopped rotating, then

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