New research reveals how dramatically Earth’s magnetic field weakened and shifted during an event called the Laschamps geomagnetic excursion, potentially influencing human evolution at a pivotal ...

When an electric current passes through a metal wire, a magnetic field forms around that wire (see diagram at right). Likewise, a wire passing through a magnetic field creates an electric current ...

Assuming that the magnetic field guides only the emitting electrons while the radiation is weakly scattered cannot explain the directivity pattern in multi-spacecraft observations without invoking ...

A vast and evolving anomaly in Earth’s magnetic field, situated above South America and the southern Atlantic Ocean, continues to attract focused attention from NASA researchers. This region ...