Despite their size, a number of moons have now been found orbiting ... Repeated observations suggest that Quaoar's ring is also irregular in shape. This has also been seen in other rings, where ...

“For example, the discovery of CO2 ice on the irregular outer moon Phoebe suggested that it originated in the Kuiper Belt.” The lack of volatiles, therefore, is yet further proof that the ring ...

A ring-crossing is where Saturn’s rings seem ... around a planet at the same time as the planet itself forms. Irregular moons are thought to be small planets (planetesimals) that are captured ...

A ring-crossing is where Saturn’s rings seem ... around a planet at the same time as the planet itself forms. Irregular moons are thought to be small planets (planetesimals) that are captured ...

Mars' moon Deimos has an irregular shape, and is the smallest of ... a number of moons had been pulled apart by Mars' gravity and created a ring around the Red Planet, from which a newborn moon ...

These are called "irregular moons" because they aren't neatly spherical like our moon. But they were born in dramatic circumstances. The little moons are grouped cliquishly together, suggesting ...