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

A study published in Nature identified the inner core as a key factor behind variations in day length that occur over several ...

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

Geophysicist John Vidale noticed something striking while tracking the way seismic waves move from Earth's crust through its core. The very center of the planet, a solid ball of iron and nickel ...

The rotation of Earth's inner core began to slow down more than a decade ago, altering the length of our days by fractions of a second. Researchers from the University of Southern California (USC) ...

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

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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 days are not always exactly 24 hours long. Tiny changes in the planet’s rotation can add or shave off a few ...

The inner core was discovered in 1936, and its size (about 20% of Earth's radius) is one of the best-constrained properties of the deep Earth. We use this information to estimate the core's ...

Scientists may have solved why the length of Earth’s day changes by a few milliseconds over decades. Subtle shifts in the ...

Watch a video about how Earth’s inner core changes shape over time, from the University of Southern California. Earth’s inner core is less solid than we once thought Earth’s inner core lies some 3,000 ...