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." That said, it ...

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 ...

This appears to be the case, to a rather stunning extent, in the instance of the reporting this week around new findings that researchers say shows the rotation of Earth’s inner core is slowing ...

Thanks to a new study proves that Earth's inner core since 2010 has been rotating more slowly than usual. This intriguing ...

Deeper still is the Earth's hot, liquid iron-nickel outer core, larger than the moon. Like a peach pit, at the very center is the inner core, some 1,500 miles across. The ways seismic waves reflect ...

A trio of physicists, two with Coventry University, in the U.K., and the third with Laboratoire National des Champs ...

Deep within Earth 's fiery belly, beneath layers of molten rock, a peculiar jig is underway. Our planet's inner core, a solid iron ball bigger than Pluto, isn't just spinning – it's doing a ...

A University of Minnesota professor said the Earth’s inner core hasn’t stopped but has slowed down in response to a CNN article published Jan. 26 titled “Earth’s Core May Have Stopped Turning and ...

Caption A cut-away of Earth's interior shows the solid iron inner core (red) slowly growing by freezing of the liquid iron outer core (orange). Seismic waves travel through the Earth's inner core ...

A new study challenges the long-held assumption that Earth's inner core is hard, like a solid metal sphere. Instead, our planet's heart is likely much gooier than previously thought, "kind of like ...

Earth’s inner core has been slowing down for 14 years. It comes just weeks after another team of researchers suggested that the slight increase in the length of a day may be because Earth’s ...

Is there something strange and alien confined deep inside the Earth? Is it trying to break free and escape into the heavens?