Flying over the ridge

NASA / JPL / SSI / Animation by Emily Lakdawalla

Cassini flies over Iapetus' equatorial ridge

As Cassini flew by Iapetus on September 10, 2007, it took 13 images of the equatorial ridge rising over the horizon. Most of the flight is over Iapetus' dark terrain, but at the very end of the animation, the white flanks of the Voyager moutains begin to appear.