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Earth's inner core is solid and blistering hot. For decades, scientists have known the inner core is solid thanks to the pioneering work of Danish seismologist Inge Lehmann, who first proposed its ...
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 ...
Peering into a hidden metal world Earth’s inner core sits more than 5,000 kilometers below the surface, a solid ball of mostly iron and nickel surrounded by a liquid outer core that powers the ...
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