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.

As the Earth gradually cools, the inner core expands outwards at the surrounding iron-rich liquid "freezes." That said, it is still extremely hot, at least 5,000 Kelvin (K) (4,726.85°C) .

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.

Find Earth Rotation Speed Latest News, Videos & Pictures on Earth Rotation Speed and see latest updates, news, information from NDTV.COM. Explore more on Earth Rotation Speed.

As the Earth gradually cools, the inner core expands outwards at the surrounding iron-rich liquid "freezes." That said, it is still extremely hot, at least 5,000 Kelvin (K) (4726.85 degrees Celsius) .

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.

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 ...

Scientists have uncovered evidence that precious metals like gold are leaking from Earth’s core into the mantle, ultimately ...

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