Auroral rings on saturn and Jupiter


Click the images for more detail

Left: Polar ring aurora above the atmosphere of Saturn [HST 1998]

Right: Polar ring aurora on Jupiter. The ions responsible for the extra spots in the auroral rings on Jupiter are supplied by volcanic eruptions on Io. [HST 1994]

Photos from....

http://antwrp.gsfc.nasa.gov/apod/astropix.html