A pair of still-attached probes just completed the closest flyby of the solar system’s least explored planet, capturing the first clear view of Mercury’s impact craters. BepiColombo pulled off ...

A Planet Parade describes the rare celestial event when multiple planets align in the same region of the sky as seen from Earth. On Sunday, six planets will line up, Venus, Jupiter, Saturn, and ...

Mercury has closer encounters with the Sun than any other planet in the solar system. It seems that such a planet would be doomed to turn into another Arrakis, especially after billions of years ...

Based on my research, which include image composites of two flyby views of Mercury from the MESSENGER spacecraft, I conclude that Mercury has not cooled and shrunken as much as previously thought.

Mercury is the closest planet to the sun and the smallest planet in our solar system. With a diameter of about 3,032 miles (4,880 kilometers), Mercury is less than half the size of Earth, which is ...

Six planets are hanging out in the sky this month. It's what's known as a planetary parade and it's the last one of the year.

Messenger, which orbited Mercury 2011-2015, showed many more “lobate scarps” (as they had become known) in all parts of the globe.

Mercury may be small, but it’s mighty, zipping around the Sun faster than any other planet. And despite being so close to the ...