Add Yahoo as a preferred source to see more of our stories on Google. The Earth's magnetic field deflects particles emitted by the Sun. Mark Garlick/Science Photo Library via Getty Images The Earth’s ...

Geophysicists have modeled how Earth’s magnetic field could form even when its core was fully liquid. By removing the effects of viscosity in their simulation, they revealed a self-sustaining dynamo ...

In addition to clearer images, these observations provide insights into the polarized light around black holes. At higher frequencies, Faraday rotation—a phenomenon that alters the orientation of ...

A newly developed model defines the upper limit to the strength of planetary magnetic fields. The model can help better ...