They’re not a perfect match, but it’s way too hot on the first planet for us to hop over and confirm for ourselves.

Scientists may have solved alongstanding mystery in the study of Mercury. For the first time, pieces of the Solar System’s ...

Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

Pieces of Mercury may have been found on Earth, potentially allowing scientists to study the Solar System's innermost planet.

With a total volume little more than the Moon, it is the smallest planet in the Solar System and is situated the closest to the Sun. Mercury has no atmosphere to retain heat, meaning that the ...

Mercury is by far the smallest planet in the solar system, with only around 5.5% of both the mass and volume of Earth.Despite that diminutiveness, Mercury manages to be the second-densest planet ...

Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System -- only the third ...

Hold tight, the solar system is going to get bumpy in a few months. Mercury retrograde is on its way. Maybe you've heard people lament over the astrological phenomenon, blaming their woes on the ...