The smallest planet in our Solar System may be hiding a big secret. Curious bright streaks on Mercury's surface, doodled on ...

Learn about the bright streaks that may represent recent geological activity on Mercury, which has been considered a dead ...

Although Mercury was geologically active in its early days, today its surface appears almost completely static. This is why ...

For decades, Mercury has been seen as astatic, heavily cratered planet, a relic of early Solar System history. Its surface, ...

(CNN) — 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.

BepiColombo, a joint European-Japanese mission, completed its latest flyby of Mercury, sending back a sneak peek of the cratered planet it will begin to orbit in 2026. By Katrina Miller On Thursday, a ...

Meteorites may be the only practical way to study Mercury's surface directly. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. It should also be ...

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 ...