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Dancing Auroras for Saturn
PIA13402 - Scientists have sorted through hundreds of infrared
images of Saturn
taken by the Cassini
spacecraft for other purposes,
trying to find enough aurora images to correlate changes and make movies.
Once made, some movies clearly show that Saturnian auroras
can change not only with the angle of the Sun, but also as the planet
Furthermore, some auroral
changes appear related to waves
in Saturn's magnetosphere
likely caused by Saturn's moons.
above, a false-colored image
taken in 2007 shows Saturn in three bands of infrared light. The rings
relatively blue sunlight, while the planet itself glows in
comparatively low energy red. A band of southern
in visible in green.
Inspection of many more Saturnian images may well lead to an even
better understanding of both Saturn's and Earth's