On November 21, Uranus will appear the brightest this year, as it enters apposition, or opposition. The term "opposition" in ...

Chiron, a 200 km icy centaur between Saturn and Uranus, has complex rings and a dust-ice disk, revealing how ring systems ...

Material around Chiron, a small icy world in the far reaches of the solar system, may be taking shape into a ring system of its own. The rare event is unfolding in real time, giving astronomers a ...

Uranus is the only planet that rotates sideways with a 98-degree tilt. Learn why Uranus spins this way, how its seasons last ...

This marks the first time astronomers have observed the formation of a ring system. Saturn isn't the only planet in our solar system with a ring system. While Saturn's rings are the most dramatic, the ...

Sky This Week is brought to you in part by Celestron. Friday, November 21 The solar system's seventh planet, the ice giant Uranus, reaches opposition this morning at 7 A.M. EST among the stars of ...

Cutting-edge simulations show that Enceladus’ plumes are losing 20–40% less mass than earlier estimates suggested. The new ...

From Cassini’s awe-inspiring flybys to cutting-edge simulations, scientists are decoding the secrets of Enceladus’s geysers.

In a universe where change usually unfolds over eons, astronomers have gotten a rare front-row seat to watch a small, icy world beyond Saturn build a brand-new set of rings in real time.

In the 17th century, astronomers Christiaan Huygens and Giovanni Cassini pointed some of the earliest telescopes at Saturn and made a surprising ...

Bundle up and blast off to the far reaches of our Solar System for Ice Giant Night at the historic Cincinnati Observatory.

In the 17th century, Christiaan Huygens and Giovanni Cassini focused their telescopes on Saturn and realized its bright bands were not solid features ...