Among the solar system’s hundreds of known moons, few are as enticing as the handful that scientists believe have a global ocean lurking below their crusty surface. But two of these hidden oceans may ...

Could the icy moons of our solar system hold life beyond our planet? Keith Cooper looks at how planetary scientists plan to find out ...

The solar system’s largest planet shines bright as the Moon wanes and Saturn’s moons dance in the sky this week.

The week features the observation of transient celestial events, including a recently identified supernova candidate (AT 2025yyn) in Ursa Major and Comet C/2025 A6 Lemmon, which is nearing naked-eye ...