Saturn Is Red
This false-color image of two density waves in Saturn's A ring was made by the Cassini-Huygens Ultraviolet Imaging Spectrograph instrument. Bright areas indicate the denser regions of the rings. Bright bands in the left part of the image are the 'peaks' of a density wave caused by gravitational stirring of the rings by Saturn's moon, Janus.
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https://www.nasa.gov/image-detail/saturn-red/
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