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

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 ...

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

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

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 ...

Deep inside Earth, two massive hot rock structures have been quietly shaping the planet’s magnetic field for millions of ...

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

"A strong magnetic field is very important for life on a planet," study lead Miki Nakajima, an associate professor in the ...

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

Head, Research and Development Section, Computer Dept. Raytheon Manufacturing Co., Waltham, Mass. MAGNETIC core circuits can be found performing the computer functions of storage, manipulation, ...