Scientists have long known that Earth's core is mostly made of iron, but the density is not high enough for it to be pure iron, meaning lighter elements exist in the core, as well. In particular, it's ...

Add Yahoo as a preferred source to see more of our stories on Google. New research suggests Earth’s core may store up to 45 oceans’ worth of hydrogen, reshaping theories of water’s origin. (CREDIT: ...

Earth's molten outer core is critical to life on our planet. Churning some 2,900 kilometers beneath the surface, it's a vast "sea" of liquid iron that swirls around the planet's solid inner core. This ...

It was a journey to the center of the Earth, if only for the briefest of moments. But rather than tunneling thousands of miles from Earth's surface, researchers from Lawrence Livermore National ...

Earth's inner core, the solid iron-rich mass at the center of our planet, is slowly growing as the surrounding molten outer core cools and freezes. But this process has been a source of debate amongst ...

PCWorld reports that scientists discovered Earth’s inner core has slowed its rotation relative to the crust, even appearing to stop moving in a phenomenon that occurs every 35 years. This iron-nickel ...