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8 incredible images of Saturn

Saturn north pole

Photo: NASA/JPL/University of Arizona

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Strange hexagon

Most experts agree that Saturn is a giant ball of gas without a solid surface, though it does appear to have a hot inner core of iron and rock. Partially due to this, Saturn has flat poles and bulges at the equator. This is a nighttime view of Saturn's north pole taken by the visual and infrared mapping spectrometer aboard Cassini. It shows what NASA calls a bizarre hexagonal feature encircling the entire north pole.