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 ...

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 of weak magnetism appears to be splitting ...

The dayside magnetosphere, the side of the magnetic field directly between the Earth and the sun, is a vast place. It usually extends some 10 times the radius of the Earth toward the sun, ...

The magnetic field of our planet -- otherwise known as the magnetosphere -- extends out to about 65,000 kilometers (40,000 mi) above the surface of the planet.

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 magnetosphere—the magnetic field that surrounds our planet like a protective shield—had degraded to its lowest intensity ever, according to a study published January 28 in Nature Geoscience.

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.

So-called cracks in the Earth's magnetic field have led to spectacular aurora light shows being seen in the skies, despite there not having been a solar storm to generate them.. According to ...

The oldest firm age yet for Earth's magnetic field suggests that it developed before a solid planetary core, 3.7 billion years ago. When you purchase through links on our site, we may earn an ...

Unlike the Earth, Mars does not have a strong, global magnetic field. This field helps to protect our planet from cosmic rays and retain its atmosphere.