Accelerate progress in our three core enterprises — Explore Worlds, Find Life, and Defend Earth. You can support the entire fund, or designate a core enterprise of your choice.
Cassini flies over Iapetus' equatorial ridge As Cassini flew by Iapetus on 10 September 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. NASA / JPL-Caltech / SSI / animation by Emily Lakdawalla