The weak spot, known as the South Atlantic Anomaly, was identified in the 19th century and expanded in recent years.

Learn about the growth of the South Atlantic Anomaly, a region where Earth's magnetic field has significantly weakened.

Earth’s magnetic field protects the planet from space weather like cosmic radiation and charged particles from the Sun. The ...

The South Atlantic Anomaly, a huge weak spot in the geomagnetic field off South America, has expanded and sprouted a lobe in ...

Satellite data reveal that a weak region in Earth's magnetic field has grown by an area roughly half the size of continental ...

New satellite data show Earth’s magnetic field changing fast, with a growing weak spot over the South Atlantic.

Per the ESA, this phenomenon can be best explained by strange behaviors far within the Earth at the boundary where the Earth's liquid outer core meets the rocky mantle layer. This boundary, referred ...

A weak zone in Earth’s magnetic field, known as the South Atlantic Anomaly, has expanded at an alarming rate over the past ...

More than a decade of satellite monitoring has mapped Earth’s magnetic field as it subtly altered between 2014 and 2025 — and what scientists have learned is remarkable. The South Atlantic Anomaly, a ...

A giant dent in Earth's magnetic field is continuing to expand, according to the latest data from a trio of satellites ...

Using 11 years of magnetic field measurements from the European Space Agency's Swarm satellite constellation, scientists have ...