The Earth’s inner core is incredibly tricky to study, since it’s buried beneath thousands of miles of rock. New seismic studies suggest that it’s not just a solid ball of iron, as has been assumed, ...

Though Earth's innermost core is solid, new research suggests that it hosts a lot of variation. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

A new analysis has found that Mercury has a solid inner core, just like Earth does. And Mercury’s core is just about the same size as our own planet’s. I’m biased here, but Mercury is an incredible, ...

NASA researchers recently discovered the largest solid core ever found in an extrasolar planet, and their discovery confirms a planet formation theory. “For theorists, the discovery of a planet with ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Earth might have more layers than scientists thought. New research finds that there may be a ...

With more than 5,000 km (3,000 mi) of rock between us and the Earth's core, it's hard to get a clear look at what's going on down there. It's long been thought that the inner core is a solid ball of ...