Learn how some of Earth’s magnetic field flips last longer than others, weakening our defenses against cosmic radiation.

Ancient rocks show Earth’s magnetic field followed deep heat patterns inside the planet for hundreds of millions of years.

Scientists have debated for decades whether Earth’s magnetic field plays a role in keeping the planet habitable. The question ...

Earth’s magnetic field is easy to forget. It doesn’t make noise, it doesn’t flash, and it doesn’t ask for attention. Yet it ...

While we have sent probes billions of kilometers into interstellar space, humans have barely scratched the surface of our own ...

The continent-sized blobs are much hotter than the lower mantle, creating a significant temperature gradient in the rocky ...

Deep beneath the ocean floor, ancient sediments hint that Earth’s magnetic field sometimes changed far more slowly than expected.

A team of geologists found for the first time evidence linking regions of low seismic velocity and the shape of the Earth’s magnetic field.

The South Atlantic Anomaly, a weak spot in Earth's magnetic field, has expanded by nearly half the size of continental Europe ...

Far beneath the Atlantic, a vast distortion in Earth’s magnetic shield has been charted with a clarity that would have been unthinkable a decade ago. The South Atlantic Anomaly, a sprawling weak zone ...

Earth's magnetic field is generated by the churn of its liquid nickel-iron outer core, but it is not a constant feature. Every so often, the magnetic north and south poles swap places in what are ...

Exploring Earth's deep interior is a far bigger challenge than exploring the solar system. While we have traveled 25 billion ...