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.

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

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

A meteor shower, a planet sighting, and a full moon. Here's how to see all of space's eye-catching activity in July.

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.

Despite being covered in impact craters that could potentially send pieces of the planet into space, we have never found a ...

The sun rises from the east, and sets in the west - this is a well-established fact for the longest time, and this is due to ...

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

Two meteorites discovered in the Sahara Desert could potentially be fragments of Mercury that broke off during a collision in ...

Our solar system is a pretty wild place, full of amazing stuff. From the giant Sun to the tiny rocks floating around, there’s ...

Mercury moves super fast around the Sun, finishing its year in just 88 Earth days. The planet has crazy temperature swings, ...

Mercury reaches its point of greatest eastern elongation on Friday (July 4), presenting an excellent opportunity to spot the ...