This self-sustaining loop is known as the geomagnetic dynamo. Energy is needed to keep the dynamo running. This energy comes from the release of heat from the surface of the solid inner core.

A new study finds that unique ionospheric changes occurred in the upper atmosphere in response to the May 2024 geomagnetic ...

generated by a now-extinct molten core dynamo. This ancient field likely even connected with Earth's, according to NASA, creating a protective magnetosphere that shielded both bodies from solar wind ...

Mars used to have a geomagnetic field ... creating a self-sustaining dynamo, Schnepf explains. At least, that’s the textbook explanation – the truth is more nuanced, akin to “when you ...

MOSCOW, August 18. /TASS/. A G3-class, or "strong" geomagnetic storm has begun on the Earth, said Mikhail Leus, a leading expert at the Fobos weather center. "A geomagnetic storm began on the ...