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 ...

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

Most of the time, the shape of Earth’s magnetic field is quite similar to that which would be produced by a bar magnet ...

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 ...