Earth’s core could contain helium from the early solar system. The noble gas tucks into gaps in iron crystals under high pressure and temperature.

The discovery that helium and iron can mix at the temperatures and pressures found at the center of Earth could settle a long ...

Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.

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

These results suggest that similar reactions between helium and iron may have occurred within Earth’s core shortly after its formation, trapping much of the primordial helium-3 in the material that ...

The discovery that inert helium can form bonds with iron may reshape our understanding of Earth’s history. Researchers from ...

This primordial element was already known to exist inside Earth. Each year, about 4.4 pounds (2 kilograms) of helium-3 leaks out of mid-ocean ridges where the crust is pulling apart and out of ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Scientists discover Earth may have huge quantities of helium trapped in its core after ...