Earth's magnetic field originates in the outer core and extends out into the magnetosphere — a region of space that helps protect Earth from space weather.

A rare geological event occurs every 300,000 years or so: the Earth’s magnetic poles flip. The magnetic poles are the two ends of the magnetosphere, which surrounds the Earth like a giant, invisible ...

A new model describes Neptune's "badly behaved" magnetic field, showing how its tilt and interactions with the solar wind lead to a lopsided magnetosphere. The model could lend insight into ...

The oldest firm age yet for Earth's magnetic field suggests that it developed before a solid planetary core, 3.7 billion years ago.

Earth’s magnetic field was once 30 times weaker than it is today. This change may have played a pivotal role in the blossoming of complex life, new research found.

Researchers have spotted interesting changes in the South Atlantic Anomaly, which is a region of Earth’s magnetic field that has a large dent. The area … ...

Thousands of years ago, Earth’s magnetic field underwent a significant power surge over a part of the planet that included the ancient kingdom of Mesopotamia. People at the time probably never ...

Ever seen the northern lights? You have a magnetic layer in Earth’s atmosphere to thank for those beautiful displays. But the magnetosphere does a lot more than create auroras.

The magnetic field – or magnetosphere – is a giant invisible shield that protects the planet, repelling solar wind and other forms of space weather that could threaten life on Earth.

At planetary scale, Earth’s magnetic field induces such a current, which regenerates the magnetic field, which induces more current, and so on in a self-sustaining process known as a geodynamo. German ...