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

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.

As the closest planet to the Sun, Mercury is exposed to the star's enormous gravitational field. And it's really stressful.

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

A recent study in Icarus suggests a wandering star could disrupt our solar system. Simulations reveal that a star passing ...

New research suggests that Mercury's crust is shifting and twisting in unexpected ways thanks to the force of the Sun.

The nights surrounding June 7 will see Jupiter and Mercury crowd together close to the horizon in the northwestern sky.

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

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

Celebrate the Fourth with the Fireworks Galaxy, then check out the Demon Star Algol and the Full Buck Moon in the sky this ...