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.

Mount Everest may be the tallest mountain on Earth, but it's nothing compared to the towering giants scattered across our ...

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

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 ...

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

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 ...

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 ...

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