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

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

When the rotation of Earth’s axis speeds up or slows down, which happens over decades, a day might end up being milliseconds ...

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 ...

The length of Earth’s day drifts by a few milliseconds over decades, and a Nature paper from the University of Alberta argues ...

Earth takes a few milliseconds longer or shorter to turn on some days than on others, and the differences build up over ...

What the research is about Earth's inner core is thought to consist mainly of iron, yet many questions remain about its ...

A battle of forces, driven by the motion of Earth’s core, can explain small variations in the planet’s rotation, study finds.

A study by researchers at the University of Oxford, University of Leeds, and University College London has identified a new constraint on the chemistry of Earth's core, by showing how it was able to ...

Add Yahoo as a preferred source to see more of our stories on Google. Earth's molten outer core is critical to life on our planet. Churning some 2,900 kilometers beneath the surface, it's a vast "sea" ...

The Earth does not hide a proven “second core“, but seismological data show that its interior is much more complex than the ...