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.

The Sun, our life-giving star, is slowly dying. In about 5 billion years, it will exhaust its fuel and transform into a red giant, altering the solar system forever. But long before that, the Sun’s ...

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

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

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.

A recent study indicates a small chance that Earth could be ejected from our solar system due to passing stars. Simulations ...

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

For folks in the United States, July evenings mean 4th of July fireworks. While you're waiting for the show, be sure to watch ...

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