What did Earth's ancient magnetic field look like?

What did Earth's ancient magnetic field look like?

Earth's ancient magnetic field was significantly different than the present day field, originating from several poles rather than the familiar two, new research suggests. Then, shortly after our planet's core solidified, this work predicts that Earth's magnetic field transitioned to a 'strong,' two-pole one. Read more at sciencedaily.com

2016-07-05 11:19