New simulation reveals how Earths magnetic field first sparked to life

Geophysicists have modeled how Earths 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 that mirrors todays mechanism. The results illuminate Earths early history, lifes origins, and the magnetism of other planets. Plus, it could help forecast future changes to our planets protective shield.