As early as 2024, scientists from the US and China discovered that the Earth’s core had slowed down and even stopped moving in relation to the Earth’s crust. But until now, the general public—that’s people like you and me—has barely noticed this remarkable change.

The Earth’s core is comprised of metals and, as the name suggests, makes up the interior of the Earth. It consists of a liquid outer core (made of iron and nickel and other elements, which play a role in the Earth’s magnetic field) and a solid inner core (also made of iron and nickel, at a temperature up to 5,700 degrees Celsius).

The Earth’s outer core begins around 1,800 miles below the Earth’s surface and the inner core begins around 3,200 miles below.

Rotation changes in the Earth’s core

For a long time, scientists

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