The planet Mercury is the closest planet to the sun, and also the most difficult for spacecraft to visit and explore. This is ...

Mercury is the closest planet to Earth — yet for decades, scientists struggled to reach it. Extreme heat, intense radiation, ...

CAPE CANAVERAL, Fla. (AP) – The only spacecraft ever to orbit Mercury ended its four-year tour with a crash landing Thursday. NASA’s Messenger plunged from orbit as planned and slammed into the sun’s ...

Pieces of Mercury may have been found on Earth, potentially allowing scientists to study the Solar System's innermost planet. While we have sent two spacecraft to Mercury – Mariner 10 and MESSENGER – ...

We have many planets in the solar system and THIS is the song to sing along to if you want to remember them. Get your ...

Scientists have discovered an ultra-compact quadruple star system where three stars fit within Mercury's orbit.

A collision with an asteroid might have set the planet Mercury whirling oddly in its orbit, a new study suggests. When one body orbits another — say, a moon around a planet or a planet around a star — ...