The Earth's inner core was once liquid, but has turned solid over time. As the Earth gradually cools, the inner core expands outwards at the surrounding iron-rich liquid "freezes." ...

Scientists say they’ve confirmed Earth’s inner core has been slowing down. Here’s what it could mean — and why the topic has been the subject of fierce debate.

USC scientists have made a groundbreaking discovery about the nature of Earth’s enigmatic inner core, revealing for the first time that this 1,500-mile-wide ball of iron and nickel is changing.

The surface of Earth's inner core may be shape-shifting, new research suggests. The study, published Feb. 10 in the journal Nature, looked at earthquake waves that have skimmed the edge of the ...

Earth's inner core has been exhibiting some unusual behavior. Christoph Burgstedt/Getty Images 2024-07-02T15:13:46Z Share. Facebook Email X LinkedIn Copy link An icon in the shape of a lightning ...

The inner core is made of solid iron-nickel about 3,000 miles below the surface of the Earth. Scientists believe that the inner core’s rotation began to slow down in 2010 , but what that really ...

Earth’s inner core isn’t just slowing; it’s also shape-shifting, study finds. Feb. 11, 2025. Show Comments. Climate & Environment Science & Medicine World & Nation Breaking News.

Earth’s inner core — like a planet inside another planet — appears to move to its own beat. A team of scientists previously found that it has been spinning at slightly different speeds than ...

While it's unlikely the deep-buried treasure chest will ever be cracked open, scientists call the discovery significant.