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.

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

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

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

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 ...

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

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 ...

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

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

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