If Earth’s magnetic field resembles that of a bar magnet, Jupiter’s field looks like someone took a bar magnet, bent it in half and splayed it at both ends. The field emerges in a broad swath across ...

The physical processes behind the two phenomena are different. When heated, a permanent magnet loses its magnetism because its relatively well-aligned magnetic domains, which are tiny magnets, get ...

Earth’s magnetic shield is shifting in dramatic ways. New data from ESA’s Swarm satellites show that the South Atlantic Anomaly — a vast weak spot in Earth’s magnetic field — has grown by nearly half ...

We are all very familiar with the concept of the Earth's magnetic field. It turns out that most objects in space have magnetic fields but it's quite tricky to measure them. Astronomers have developed ...

Earth's magnetic poles have reversed numerous times, a phenomenon driven by chaotic processes in the planet's outer core. Recent research suggests some reversals may have been missed, particularly ...

For the first time, researchers measured the magnetic pull inside a single bacterium, turning a biological mystery into hard numbers.

John Tarduno receives funding from NASA and the US National Science Foundation. Surrounding Earth is a powerful magnetic field created by swirling liquid iron in the planet’s core. Earth’s magnetic ...

Learn about the continent-sized rocks hidden deep within Earth's mantle that have influenced the magnetic field for millions of years. The depths of Earth pose numerous questions about the planet’s ...