Add Yahoo as a preferred source to see more of our stories on Google. The Earth's layers arranged like a Russian nesting doll in outer space. The Earth's layers arranged like a Russian nesting doll in ...

New study reveals that Earth's inner core is undergoing unexpected structural changes, challenging long-held assumptions about its solidity.

Scientists have long thought Earth's inner core is like a huge solid metal ball. But an experiment revealed it may be a lot softer — more like butter, a lead scientist said. It could help explain why ...

Earth’s core isn’t just a boring, featureless ball of metal, it turns out. A recent study used seismic waves from earthquakes to make a 3D model of the center of our planet, and the researchers ...