With an estimated 6 sextillion kilograms of the stuff—that’s 21 zeroes by the way—the Earth’s core is another example of why ...

Earth’s core has often been described as just a giant ball of iron and nickel. Now, a new study argues that it is also a ...

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 ...

An experiment to quantify the amount of the universe’s lightest element in Earth’s core suggests that the planet’s water has ...

A team of researchers has produced the strongest experimental evidence yet that Earth’s iron core holds enormous quantities ...

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

The volume of the ocean, its average purity, and the chemical makeup of H₂O allow a simple estimate of the amount of hydrogen ...

For years, scientists have tried to understand what’s hidden in the Earth. Now, a recent investigation has revealed something ...

Scientists have long debated whether most of Earth's vital liquid was delivered via icy comets or was homemade ...

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

The Earth's magnetic field and oxygen evolved together over 540 million years, according to a major NASA study.