But in the ancient past—up until about 4.12 to 4.14 billion years ago—Mars seems to have had an inner dynamo powering a planet-wide magnetic field. What shut down the Martian dynamo?

Mars' dynamo was "driven by convection within the planet's iron core much like Earth's," and "could shield the surface from harmful cosmic rays, crucial for maintaining a habitable environment ...

Without that stirring motion to drive the planet's interior dynamo, the Earth's magnetic field might not have formed. Without the magnetic field, the planet's surface would be exposed to a ...

Sato said that atmospheric waves, including gravity waves and global-scale tidal waves, affect the ionospheric dynamo, a process generating an electrical current around the planet through the ...

The so-called Coriolis force also plays a role in sustaining the geomagnetic dynamo. Our planet's spinning motion causes the moving liquid metal to spiral, in a way similar to how it affects ...

An international team of scientists has modeled the formation and evolution of the strongest magnetic fields in the universe.