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.

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 ...

Earth's diameter is about 7,900 miles. The planet's internal structure comprises four layers: a rocky crust on the outside, then a rocky mantle, an outer core made of magma and a solid inner core.

Our planet’s core is made mostly of iron, but it might also contain primordial helium that formed just after the Big Bang. Helium normally has trouble bonding with other elements, but researchers were ...

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

Experts hope the minerals they find via this method will “power green, renewable energy sources for a sustainable future.” ...

Primordial helium from the beginning of the solar system may be stuck inside Earth's solid core, new research suggests ... out of volcanic hotspots that tap magma from the deep mantle.