An astronomer's colorful animation shows how Saturn's disappearing rings act like a 'mini solar system' An astronomer's colorful animation shows how Saturn's disappearing rings act like a 'mini solar system' Morgan McFall-JohnsenApr 4, 2021, 19:19 IST Saturn's rings, imaged based on radio data from NASA's Cassini spacecraft. Green indicates regions with particles smaller than 5 centimeters; purple is where no particles are that small. The white area is so dense that it blocked radio signals.NASA/JPL Saturn's seven icy rings each spin at their own speed, behaving like a "mini solar system." But the Saturn is slowly swallowing them, according to O'Donoghue's research.