What Is an Underground Ocean? An underground ocean refers to vast amounts of water stored inside Earth’s mantle rock. It’s not a flowing body of water like a lake or sea. Instead, this water ...

Beneath Ethiopia, the Earth’s mantle is pulsing like a slow, steady heartbeat, slowly tearing Africa apart and laying the ...

Scientists have collected the deepest samples of mantle rock ever, and it could shed light on how life formed on Earth.

The good news is that there's a vast ocean of water under the surface of Mars – enough to cover the entire planet to a depth of a mile (1.6 km). The bad news is that this repository is so deep ...

A new study of Saturn's 'Death Star' moon Mimas finds evidence of a young, underground ocean that may be hospitable to early forms of life.

Scientists think geysers on Saturn's moon Enceladus might come from a "mushy" zone of ice along the world.

Seismic records reveal that this immense amount of energy was built up in rock under the ocean floor because of building gas pressure, which was all released at once in a huge explosion.

Evidence of a deep global ocean beneath the crust of Saturn's moon Mimas—sometimes called the "Death Star"—has surprised astronomers because it's such an unlikely place to find one. A new ...

Scientists want $60 million to try trapping carbon dioxide in the sea floor off the coast of Canada. They say reactive basalt rock across the planet could turn CO2 into rock at the bottom of the ...

A NEW ocean is forming beneath Ethiopia as a “heartbeat”-like pulse deep below the Earth’s surface splits the African continent in two, according to scientists. While a new ocean ...