The Voyager space probe discovered features shaped like rays, called spokes.
These were also seen later by the Hubble telescope.
The Cassini probe photographed the spokes in 2005.
They are seen as dark when under sunlight, and appear light when against the unlit side.
At first it was thought the spokes were made of microscopic dust particles but new evidence shows that they are made of ice.

They rotate at the same time with the planet's magnetosphere, therefore, it is believed that they have a connection with electromagnetism.
However, what causes the spokes to form is still unknown.
They appear to be seasonal, disappearing during solstice and appearing again during equinox.
The Voyager space probe discovered features shaped like rays, called spokes. These were also seen later by the Hubble telescope. The Cassini probe photographed the spokes in 2005. They are seen as dark when under sunlight, and appear light when against the unlit side. At first it was thought the spokes were made of microscopic dust particles but new evidence shows that they are made of ice.
They rotate at the same time with the planet's magnetosphere, therefore, it is believed that they have a connection with electromagnetism. However, what causes the spokes to form is still unknown. They appear to be seasonal, disappearing during solstice and appearing again during equinox.
Saturn