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.

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

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

Mercury is a mystery. It’s the smallest planet in our solar system, the closest to the Sun, and one of the most extreme. Its ...

Mercury doesn't give up its secrets easily. The smallest planet in our solar system is also one of the most extreme—a ...

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

Mercury is the month's highlight, reaching greatest elongation July 4. Also on show in the Southern Hemisphere: Mars, Saturn, ...

In the latest shutdown, the cosmic ray subsystem experiment on Voyager 1 and Voyager 2’s low-energy charged particle ...