A new kind of aurora has recently been observed over Saturn's polar regions. Unlike aurorae on Earth, which are rings, the new kind on Saturn covers a broad area, more disk than ring. We know our aurorae are the result of an interaction between the solar wind and Earth's magnetic field. We also know that Saturn has an internal power source. So far, however, scientists can't explain what is causing and maintaining this new display.
Couple the new aurora with the huge, hexagon-shaped storm raging around Saturn's north pole, also recently discovered, and it's clear the polar regions of the Ringed Planet are weird and wonderful places.
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