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 ...

As much as 45 oceans’ worth of hydrogen may be in Earth’s core, scientists reported, suggesting most of Earth’s water was ...

A new scientific revelation reveals that deep in the Earth’s core lies a good amount of hydrogen as well as a large amount of iron. While the iron in the core has always been recognized as dominant, ...

How Earth got its water has remained an open question for years. Some scientists suspect that much of it came from icy comets that pelted the planet during its youth. But now, new research supports ...

Precious metals may be escaping from the planet’s core. This hotly debated subject could help us understand Earth’s evolution and determine whether life exists elsewhere in the Universe ...

Earth's core contains nine to 45 times more hydrogen than the planet's oceans do, according to a new study that could settle ...

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 under ...

Scientists suggest that huge reserves of hydrogen inside the Earth may have been key in the formation of water.

Measurements of seismic waves over many years suggest the Earth's core is deformed and reshaped by conditions of extreme heat ...

Earth cross section showing the classic distinction between crust, mantle and core. But new research shows Earth's structure is far more complicated and may change over time. Analyzing an unusual ...

Earth’s inner core is changing shape, scientists have found. The discovery resolves a long-simmering controversy about what’s happening at the heart of the planet — which was long thought to be solid ...

The solid inner core at the center of the Earth, surrounded by the outer core, mantle and crust. Here’s why: While it is well known that a material must be at or below its freezing temperature to be ...