Earth’s molten core suddenly reversed direction — and scientists don’t know why
Scientists have observed a sudden, unexplained reversal in the flow of molten iron within Earth's outer core beneath the Pacific Ocean, which occurred in 2010. Data from satellite missions like Swarm and CryoSat helped researchers track this shift, which influences the planet's geomagnetic field.
Liquid iron in Earth's outer core can behave in surprising ways. Scientists discovered that a large flow of molten material deep beneath the Pacific Ocean changed direction for reasons that remain unclear. Data from ESA satellites helped researchers trace the shift and build a more detailed picture of what is happening near the center of the planet.
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