The rotation of Earth’s inner core may have paused and it could even go into reverse, new research suggests.

Imagine Earth’s inner core — the dense center of our planet — as a heavy, metal ballerina. This iron-rich dancer is capable of pirouetting at ever-changing speeds. That core may be on the ...

Earth’s inner core isn’t just slowing; it’s also shape-shifting, study finds A new study from USC scientists reveals Earth’s inner core is undergoing structural transformation.

A new study offers compelling evidence that Earth's inner core reversed direction and is slowing down.

Exactly how the inner core rotates has been a matter of debate between scientists — and the latest research is expected to prove controversial.

Atoms within the enormous ball of iron in Earth's inner core may move around much more than previously thought, which could explain recent findings about the core's surprising softness.

The inner core at the center of the Earth, a ball of iron and nickel about 1,500 miles wide, may not be perfectly solid. A new study finds evidence that the inner core’s outer boundary has ...

Earth’s core is transforming, which could affect the length of our 24-hour day, Earth’s magnetic field, and more ...

The Earth’s inner core is separated from the rest of the planet by its liquid outer core, so it rotates at a different pace and direction.

Earth’s inner core is surprisingly soft, and wiggling iron atoms may help explain why. The innermost part of our planet is a solid iron ball smaller than the moon and almost as hot as the ...

Earthquake data hint that the inner core stopped rotating faster than the rest of the planet in 2009, but not all researchers agree.

Scientists have discovered that our planet's core has been rotating at a slower rate for nearly 15 years -- and it could mean longer days for some.