Hubble Provides Clear Images of Saturns Aurora
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Hubble Provides Clear Images of Saturn's Aurora

March 21, 2003
This is the first image of Saturns ultraviolet aurora taken by the Space Telescope Imaging Spectrograph (STIS) on board the Hubble Space Telescope in October 1997, when Saturn was a distance of 810 million miles (1.3 billion kilometers) from Earth. Saturns auroral displays are caused by an energetic wind from the Sun that sweeps over the planet, much like the Earths aurora that is occasionally seen in the nighttime sky and similar to the phenomenon that causes fluorescent lamps to glow.

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