Sights of Saturn
Cassini returned this fantastic photo of Saturn's aurora superimposed on the North polar hexagon. The aurora was photographed at 4 microns on November 10, 2006 and the clouds at 5 microns on June 15, 2008. The aurora has inner and outer components caused by streams of inward and outward magnetic field lines. Concentric lines crowd in on one another near the pole, creating the hexagon. Saturn's poles are hot spots with the highest temperatures of the surface. Heat and polar magnetic fields are clues that Saturn may have formed around a Black Hole.