Earth's rotation experiences slight variations in day length due to interactions within its inner core and mantle.

Tiny changes in Earth’s rotation may reveal a tug-of-war between its deformable inner core, liquid outer core and deep mantle.

Earth's inner core swings about 2.35 degrees over roughly 70 years, and its gravitational pull changes the length of a day by ...

We use a day as 24 hours. When we look at a clock, it feels as though time from morning to night progresses at a constant ...

Two Canadian researchers may have discovered the source of the multi-decades-long changes in Earth's length of day.

The Earth’s Inner Realm: Anything but Boring For generations, people wondered what was hidden deep underground. It wasn’t until the 19th century, with the rise of seismology, that scientists started ...

Diagram of Earth's structure showing inner core, outer core, mantle and crust. A doughnut-shaped structure almost 3,000 kilometers beneath our feet has been discovered by scientists from the ...

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Introduction]Beneath our feet, deep within the Earth, lies a massive lump of metal known as the 'inner core'.In recent years, ...

Earth’s inner core has both changed its relative rotation rate and deformed in the past few decades, according to an analysis of seismic waves recorded when the inner core occupied the same relative ...

Seismic data like the lines pictured on this 3D map help scientists understand the structure of the earth's core. This particular map helps scientists at Chesapeake Energy’s Oklahoma City headquarters ...

This artist’s concept of the Earth’s core shows the inner core in red, the outer core in blue, and the donut in red. The donut region contains more light elements around the equator. Image via ...