Spectacular storm rages on south pole

The dark eye of the "hurricane" spans about 8000 kilometres and is surrounded by rings of clouds that tower about 30 to 75 kilometres above it.
"It looks like a hurricane, but it doesn't behave like a hurricane," says Andrew Ingersoll, a member of Cassini's imaging team at Caltech in Pasadena, US. "Whatever it is, we're going to focus on the eye of the storm and find out why it's there."

It is unclear how long the storm has been there because Cassini has never before seen the pole at such a high resolution. And scientists are still puzzling over how it formed.