Earth’s blue sky is just one version of how the heavens appear. Join us on a journey to other planets and moons, where the skies come alive with alien colors, distant suns, and surreal landscapes.

Tiny grains from asteroid Ryugu are revealing clues to the magnetic forces that shaped the far reaches of the solar system over 4.6 billion years ago. The findings suggest the distal solar system ...

Astronomers are investigating the possibility of a hidden ninth planet beyond Neptune, which could explain unusual orbital patterns in the Kuiper Belt.