As the material separated, the dark patch could have grown steadily over time, resulting in the yin-yang moon seen today. Scientists are not only looking at Iapetus and modeling it to explain the ...

Yin and yang appear to meet on one of Saturn's moons in a photo taken by a spacecraft exploring the ringed planet and its many moons. The new Cassini photo of Saturn's moon Iapetus shows the ...

10 fly-by of Saturn's two-toned moon Iapetus. The pictures show the moon's yin and yang -- a white hemisphere resembling snow, and the other as black as tar. Cassini scientists are poring through ...

This Cassini image hints at the split personality of Saturn’s 1,436 kilometer (892 mile)-wide moon Iapetus. The Voyager spacecraft first imaged this curious yin-yang moon, with its light and ...