Iapetus Flyby Animation
Cassini’s flyby of Saturn’s icy moon Iapetus is set for Dec. 31, 2004. Iapetus is Saturn’s two-faced moon — one side is very bright, and the other is very dark. One scenario for this striking difference is that the moon’s surface is being resurfaced by some material spewing from within.
QuickTime (76.5 MB)
