Catching Saturn’s Ring Waves
The Cassini team got this stunning false color image of Saturn's rings using a technique called "stellar occultation." In simple terms, they pointed one of the spacecraft's instruments through the rings at a star. The flickering of the starlight as the rings passed in front of it was converted into the ring density depicted in this image.
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https://www.nasa.gov/image-detail/catching-saturns-ring-waves/
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