It was a lot more powerful than anyone believed.
Ancient Australian crystals unlock history of Earth's first magnetic field : Read more
Ancient Australian crystals unlock history of Earth's first magnetic field : Read more
As the report states, "Earth has had a magnetic core for 4.2 billion years, according to the new study. But until 565 million years ago, long before the dinosaurs arrived and a bit before complex life emerged in the Cambrian explosion, that magnetic core worked completely differently. At that point, there was no inner core."It was a lot more powerful than anyone believed.
Ancient Australian crystals unlock history of Earth's first magnetic field : Read more