There are some excellent photos of Jovian aurora from the Hubble Space Telescope and Galileo available here:
- http://antwrp.gsfc.nasa.gov/apod/ap001219.html
- http://antwrp.gsfc.nasa.gov/apod/ap980123.html
- http://antwrp.gsfc.nasa.gov/apod/ap970609.html
Links courtesy of Physics Forums. This entry also posted in the American Military University Introduction to Astronomy newsgroup.