Planetary rings explained: composition, formation theories, and a comparison of Saturn, Jupiter, Uranus, and Neptune’s rings.

Skygazers, mark your calendars because one of the coolest celestial events is coming around again toward the end of February.

Jupiter's moon count reaches 95+ official satellites. Explore the history of the Jovian system, from Galileo to the latest NASA discoveries.

Skygazers who look up at the moon tonight may be able to spot Saturn below it. Here's when and how to spot the conjunction.

Jupiter and Saturn host some of the strangest weather in the Solar System, and nowhere is that more obvious than at their ...

Step through the ultimate visual tour of the outer solar system. From Mars’ iconic rover panoramas to Jupiter’s Great Red ...

Skygazers who look up at the moon tonight may be able to spot Saturn below it. Here's when and how to spot the conjunction in ...

Saturn and the moon will appear close together in Nevada skies. Here’s how and where to spot the pairing, known as a ...

Sky This Week is brought to you in part by Celestron. Friday, January 23Pluto reaches conjunction with the Sun at 5 A.M. EST.

Stargazers are about to have a chance to spot Saturn and the moon sharing a section of the night sky in what's known as a ...

A distinctive curved marking etched into the Moon’s surface comes into sharp relief this week as winter darkness, crisp air ...