Saturns Moon Dione in Slight Color . ... Credit Copyright: NASA , JPL , SSI , ESA ; Post Processing: Marc Canale Explanation: Why does one half of Dione have more craters than the other? Start with the fact that Saturn 's moon Dione has one side that always faces Saturn, and one side that always faces away. This is similar to Earth's Moon . This tidal locking means that one side of Dione always leads as the moon progresses in its orbit, while the other side always trails. ...