Close-up pictures reveal dark craters that may hold a clue to Mercury’s greatest mystery – the existence of water on the planet closest to the Sun.

Contrary to what an unsigned Sound Off ... The Mercury editorial writers are economically and historically illiterate. He’s baaack! The biggest badass on the planet is already kicking butts ...

The Mercury’s story on West Pottsgrove’s plans ... Wow, take a break from the ranting of Sound Off and the name-calling goes full bore. Hey, Freedom Fighter, my definition of a sore loser ...

Mercury – named after the Roman god Mercury, the messenger to the gods – is the smallest and closest to the Sun of the eight planets in the Solar System, with an orbital period of about 88 ...

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.