Earth's core

A cross-section of the Earth showing the hot core and the magnetic field lines surrounding the planet.

The flow of iron in the Earth's outer core has changed direction beneath the Pacific Ocean

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Researchers have reconstructed the movement of liquid iron in the Earth's outer core and found that in 2010 the direction of flow reversed over a large area beneath the Pacific Ocean. Data from Swarm satellites and other missions show that
A look at the interior of the Earth a billion years ago: Tangled magnetic field lines inside the core are linked to the external magnetic field. (Scientifically correct image from a study simulation). Credit: ETH Zurich / SUS Tech

Earth's ancient shield: Scientists crack billion-year-old mystery of magnetic field

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A new model reveals how the Earth's core maintained a stable magnetic field even before the inner core formed, providing insights into the origins of life and our technological future.
The Earth's core began to slow down around 2010, moving more slowly than the Earth's surface. Credit: USC

Is the Earth's core losing speed?

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The researchers collected and analyzed seismic data recorded around the South Sandwich Islands from 121 repeated earthquakes that occurred between 1991 and 2023. They also used data from two Soviet nuclear tests between 1971 and 1974,
Earth's layers - solid inner core, liquid outer core, mantle and crust. Illustration: shutterstock

The earthquakes that tell the story of the Earth's core

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