Saturn’s E ring is a huge, fuzzy, donut-shaped circle of particles around Saturn, that puzzled scientists for a long time.
Thanks to the Cassini-Huygens mission, scientists realised that the ring is actually created by particles left behind in the wake of Saturn’s icy moon Enceladus.
This view, taken by Cassini on 15 September 2006, at a distance of about 2 million km from Enceladus, shows a plume emanating from the moon’s south polar region. This plume is created as water from Enceladus’s underground ocean spews out of cracks in its icy surface.