Far beneath the Atlantic, a vast distortion in Earth’s magnetic shield has been charted with a clarity that would have been unthinkable a decade ago. The South Atlantic Anomaly, a sprawling weak zone ...

Before two dead stars slam together in one of the universe’s most violent events, their magnetic fields erupt in a storm so intense it can light up space long before the crash. Using a powerful ...

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

It is not known when humans first noticed the attraction or repulsion between pieces of magnetic material. The first important device depending on these forces was the magnetic compass, which is ...