NASA's Magellan orbiter launched from Florida in 1989 helped scientists discover a vast underground lava tube on Venus in 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 ...

Deep beneath the familiar blue of the oceans, Earth may be hiding a far larger sea of potential. New high pressure experiments suggest the planet’s metallic heart could store hydrogen equivalent to ...

Volcanic caves are not just an Earth thing. Scientists have spotted signs of lava tubes on the Moon and Mars. Now, ...

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

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

Scientists find radar evidence of a vast underground lava tunnel beneath Venus, hinting at hidden volcanic activity.

Hydrogen reserves in Earth’s core large enough to supply at least nine oceans may influence processes on the surface today.

Researchers had only hypothesized the existence of underground lava tubes on Venus —until now.

The blobs lie at the base of Earth’s mantle, around 1,802 miles beneath Africa and the Pacific.