Far below the familiar blue of the oceans, scientists are uncovering evidence of a vast hidden reservoir of water locked ...

When the early Earth’s magma ocean crystallized 4.4 billion years ago, the deep mantle trapped an ocean’s worth of water, scientists say.

When Earth was a molten inferno, water may have been locked safely underground rather than lost to space. Researchers ...

Earth's deep mantle stored enough water in rocks to equal one ocean during our planet's early molten days, helping explain ...

This surprising study reveals that the “secret water vault” within Earth is one of the most consequential geological ...

Some 4.6 billion years ago, Earth was nothing like the gentle blue planet we know today. Frequent and violent celestial impacts churned its surface and interior into a seething ocean of magma—an ...

Today, oceans cover about 70% of Earth’s surface. This stark contrast has long driven scientific interest in how water ...

Earth’s deep interior still shapes the world above your feet. Water trapped far below the surface helps control how rocks ...

In recent years, science has unveiled some astonishing secrets—from what lurks inside black holes to the discovery of a vast new “8th continent.” Even closer to home, researchers have uncovered a ...

Learn how we know the Earth is round, and the science behind the shape of our gravitational field.

On November 16, 2025, the Sentinel-6B satellite launched from Vandenberg Space Force Base (VSFB) in California.