Europe's BepiColombo mission will enter orbit of the solar system's first planet in about two years, but it's been whizzing past Mercury regularly as it lines up its approach. The ESA reports that ...

The last week of February holds a special celestial treat in store for astronomers and amateur stargazers. Mercury will become the seventh planet to line up in a current “planetary parade” that’s ...

Mention the word “mercury” and one of two things comes to mind: the silvery metal that is liquid at normal temperatures, or ...

As the orbit of Mercury around the Sun is tilted compared with the orbit of the Earth around the Sun, the planet normally appears to pass above or below our nearest star. A transit can only take ...

Mercury has the shortest and fastest orbit around the Sun and experiences dramatic temperature changes as it rotates. It is a world of extremes. Explore facts about our solar system's fastest planet.

This means that, from our perspective on Earth, it appears as if Mercury is moving backward in its orbit around the sun. Mercury in retrograde is not a rare or sudden occurrence. It happens three ...

Dwarf planet Pluto, on the other hand, has a fairly squashed orbit. Mercury, the closest planet to the sun, has the most eccentric orbit, with the difference between the distance at perihelion and ...

But of these planets, which is nearest to the sun? Mercury is a strange little world. There are some craters on its surface that never see sunlight. It also has the most extreme temperatures of ...