We do not feel churnings happening under the surface of the planet unless we are shaken by violent swirling or crushing fault lines in the form of an earthquake or volcanic explosion.

A new study has now revealed that the Earth's inner core recently stopped spinning and then changed its spin orientation in the opposite direction.

The study published in Nature Geoscience states that the globally consistent pattern suggests that inner-core rotation has recently paused.

The rotation came to a grinding halt in 2009 and then it surprisingly turned in an opposite direction.

The rotation came to a grinding halt in 2009 and then it surprisingly turned in an opposite direction.

Researchers have long believed that the inner core rotates, relative to the Earth's surface, back and forth, like a swing.

Researchers have long believed that the inner core rotates, relative to the Earth's surface, back and forth, like a swing.

"One cycle of the swing is about seven decades, meaning it changes direction roughly every 35 years.

"One cycle of the swing is about seven decades, meaning it changes direction roughly every 35 years.

It previously changed direction in the early 1970s, and predicted the next about-face would be in the mid-2040s,"the researchers from China's Peking University told AFP.

Earth's layers are divided into three parts: the crust, mantle, and core.

Earth's layers are divided into three parts: the crust, mantle, and core.