(Left) A colorful view of Mercury produced using images from the color base map imaging campaign during MESSENGER's primary mission (Right) what Mercury may look like were its outer layers stripped to ...

A layer of diamonds up to 18 kilometers (11 miles) thick could be tucked below the surface of Mercury, the solar system’s smallest planet and the closest to the sun, according to new research. The ...

"We calculate that, given the new estimate of the pressure at the mantle-core boundary, and knowing that Mercury is a carbon-rich planet, the carbon-bearing mineral that would form at the interface ...

The solar system’s smallest planet may have vast riches beneath its surface, according to a stunning discovery by a NASA spacecraft. Scientists have determined that Mercury, the closest planet to the ...

An excess of carbon on the planet means that Mercury is starkly drab and gray on the surface. But new research suggests that underneath, the tiny world harbors a glittering interior fit to be the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A layer of diamonds ...

NASA's MESSENGER mission has revealed that Mercury, the solar system's tiniest planet and the closest to the sun, hides a big secret. When you purchase through links on our site, we may earn an ...