The Earth's magnetic field and oxygen evolved together over 540 million years, according to a major NASA study.

Earth’s magnetic field, generated deep within the planet’s liquid iron core, has been bending, stretching, and occasionally flipping for billions of years. That invisible shield determines whether ...

Earth’s survival story has always invited grand explanations, from divine intervention to elegant equations in physics. The idea of a “newly found force field” around our planet taps into that same ...

Cartoon of the Earth with cutaway showing the mantle and inner and outer core. Magnetic field lines produced by the geodynamo extend into space and interact with the solar wind. The iron-rich core at ...

New satellite-based analysis explains how energy carried by Alfvén waves moves from Earth’s magnetosphere into the atmosphere to generate auroral light emissions.

Not all of the solar system’s building blocks formed simultaneously. Some of the first solid bodies, or planetesimals, formed in the first million years after the Sun was born. Others, including the ...

As much as 45 oceans’ worth of hydrogen may be in Earth’s core, scientists reported, suggesting most of Earth’s water was ...