New NASA research has discovered that four moons that orbit the far outer planet -- Ariel, Umbriel, Titania and Oberon -- may have "oceans that could be dozens of miles deep" perched "between ...

The four biggest moons of Uranus — Titania, Oberon, Ariel and Umbriel — may harbor salty oceans beneath their frozen surfaces, a new study suggests.

The leading and trailing sides had almost the same brightness level on Ariel and Umbriel. On Tatania and Oberon, the outer moons, the leading sides were even darker and redder than the trailing sides.

Possible internal oceans . Back in 2022, a team led by Castillo-Rogez reanalyzed data on five of Uranus' largest moons — Ariel, Umbriel, Titania, Oberon and Miranda — collected by NASA's ...

As for the two other moons, Ariel and Umbriel, it may be that Uranus’s magnetosphere does interact with them but not in a way that’s resulting in a bright and dark side. The recent discovery ...