Mercury is the solar system’s smallest planet, and it’s also the one residing closest to the Sun. But while Mercury is commonly shrugged off as just a boring hot and rocky planet with seemingly no ...

Far smaller and closer to the Sun than it should be, Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission arriving in 2026 might ...

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 ...

Learn about the bright streaks that may represent recent geological activity on Mercury, which has been considered a dead planet in the past. Mercury’s barren surface has led to the planet being ...

Analyses of data from the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft’s second flyby of Mercury in October 2008 show that the planet’s atmosphere, ...

Mercury is a cold and desolate planet that appears to have little surface, no sign of water, and little atmosphere that can be observed. Wikimedia Commons A European-Japanese space mission will reach ...