Earth’s inner core began to solidify sometime after 565 million years ago — just in time to prevent the collapse of the planet’s magnetic field, a study finds.

Essentially, a big boost of energy was needed to drive the geodynamo and stop the magnetic field from collapsing—and the solidification of Earth's core would have done just that.

Supercomputer models of Earth's magnetic field. NASA. Around 3,000km (1,900 miles) below our feet—270 times further down than the deepest part of the ocean—is the start of the Earth's core, a ...

Doughnut-shaped region found inside Earth’s core deepens understanding of planet’s magnetic field Peer-Reviewed Publication. Australian National University ...

Every several years, magnetic field observatories record quick changes to the position or strength of the planet’s magnetic field, so-called geomagnetic ...

Lopsided growth of the Earth’s core could explain why its magnetic field reverses direction every few hundred thousand years. If it happened now, we would be exposed to solar winds capable of ...

A doughnut-shaped region thousands of kilometers beneath our feet within Earth's liquid core has been discovered, providing new clues about the dynamics of our planet's magnetic field.