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Deep beneath our feet, far beyond the reach of drills or submersibles, Earth hides a solid metal heart that behaves in ways geophysicists have struggled to explain. New experiments now suggest that a ...
The mysterious iron ball at the center of the Earth may have stopped spinning and reversed direction
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 ...
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