Earth’s core is not as dense as pure iron, and studies have hypothesized that is because its outer core might contains lighter elements, such as carbon, oxygen, and silicon.

Although more than 99.95% of Earth's gold is locked in the molten core, tiny amounts may be coming up to the surface in magma, a study found. A lava fountain at Kilauea in Hawaii is seen in early May.

Earth's core is rich with gold, and it's leaking out through the mantle and into the crust, new research has found. A new study of isotopes found in the volcanic rock that oozed out from deep ...

Like a dragon, Earth is hoarding most of its gold: research suggests more than 99 percent is in its metallic core – enough to cover all of Earth's land in gold 50 centimeters (20 inches) thick.

Earth’s core formed over 4 billion years ago and contains more than 99.999% of the planet’s gold supply. But as Nature reported, previous studies indicated that some volcanic rocks consisted ...

Researchers have found evidence that Earth's core is leaking gold and other precious metals, according to a new study. The vast majority (99.9%) of Earth's gold and other precious metals are ...

Despite its importance, there is still much that scientists do not know about the center of the Earth. A 2024 study, for example, found that the rotation of Earth's core had slowed down.

Without the aid of unobtainium to explore the Earth’s depths (a la 2003’s The Core), scientists instead have to rely on seismograms that track seismic waves as they travel through the Earth.

While ¹⁰⁰Ru does exist in Earth’s mantle, it’s slightly more abundant inside of the core —alongside 99.999 percent of the planet’s gold and other precious metals.

Beneath Earth s surface, nearly 3,000 kilometers down, lies a mysterious layer where seismic waves speed up inexplicably. For decades, scientists puzzled over this D' layer. Now ...