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 ...

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

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

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

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 ...

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

Passing stars could trigger instability across the solar system, resulting in Earth being hauled out of its orbit.

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

NASA also points out that July and August is an excellent chance to view the constellation Aquila, also known as the eagle as ...

According to US space agency NASA, the interloper - named 3I/ATLAS - was first spotted on Tuesday by an Asteroid ...