Wired has a story about Saturn’s aurora, recorded with the Cassini orbiter. Lisa Grossman describes the aurora:
Much like Earth’s northern and southern lights, Saturn’s aurora is triggered when charged particles from solar winds are channeled toward the poles by the planet’s magnetic field. At the poles, these particles interact with charged gas or plasma in the upper atmosphere and emit light. Saturn’s aurora can also be caused by electromagnetic waves generated when its moons move through its magnetosphere.
Beautiful and captivating. Enjoy.
Link:
http://link.brightcove.com/services/player/bcpid86663777001?bclid=90190339001&bctid=615464513001