For a long time, scientists thought the Earth's inner core was a solid ball of metal, sort of like a planet within a planet that sits some 3,000 miles (4,828 kilometers) below the surface.

A new study of decades worth of seismogram data shows that the surface of Earth’s iron and nickel core is more malleable than scientists thought.

Scientists have identified another possible commonality between Earth and Mars: a solid inner core. Scientists have ...

It appears to be both changing its spin rate and deforming at its surface, challenging our understanding of what lies at our planet’s center. Earth’s inner core was long thought to be a solid ...

Earth appears to be a chill blue planet, but deep down, it’s really a metalhead. Its outer core is mostly molten iron (and ...

Located 3,000 miles below the Earth’s surface, the inner core is anchored by gravity within the molten liquid outer core. It's believed to play an important role in maintaining the planet’s ...

The planet’s inner core was previously thought of as a hard, solid sphere. But a new study has found that its edges are softer than realized and actually changing shape as they press against the ...

USC scientists published a study showing that Earth’s inner core has been slowing since 2010. This deceleration slightly affects the planet’s rotation, leading to marginally longer days. “It’s very ...

It is responsible for the planet's magnetic field ... as it enhances our understanding of inner core dynamics," said Miyazaki. Devika Rao has worked as a staff writer at The Week since 2022 ...

An international team led by researchers in Japan and Europe has discovered a new multi-planet system around a Sun-like star, ...