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 ...

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.

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

As the closest planet to the Sun, Mercury is exposed to the star's enormous gravitational field. And it's really stressful.

Scientists have discovered what might be only the third known interstellar object to pass through our solar system, the ...

The nights surrounding June 7 will see Jupiter and Mercury crowd together close to the horizon in the northwestern sky.

To get a glimpse of the “Swift Planet,” EarthSky suggests waiting for the sun to set before looking west for the planet ...