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 ...

Pebble-sized building blocks of planets have been found around two young stars, offering a glimpse into how solar systems ...

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

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

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

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

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

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

Interstellar comets offer the tantalizing opportunity for us to touch something truly otherworldly,” says the European Space ...