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.

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

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.

The planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. If you include the ...

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

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

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