Earth's solid iron core formed a BILLION years ago and is still growing

Is Earth's core lopsided? Strange goings-on in our planets interior.

A New Power Source for Earth's Dynamo

Earth's core is wilder than you can imagine

The core of our planet is about a billion years old, young in cosmic terms!

The center of the Earth is an iron ball with a radius of 650 kilometers, Science

Earth's core is wilder than you can imagine

Earth's mysterious innermost core is a 400-mile-wide metallic ball

History of the Earth timeline

Earth's inner core - Wikipedia

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Earth's inner core is much younger than we thought

Earth's core is growing 'lopsided' and scientists don't know why

Earth's inner core is slowing down its spin. Should we be worried? - BBC Science Focus Magazine