A gaggle of moons
A gaggle of moons Cassini caught five moons at the edge of Saturn's ring system in this natural color photo from 29 July 2011. From left to right the moons are Janus, Pandora, Enceladus, Mimas, and Rhea. NASA / JPL-Caltech / SSI / color composite by Emily Lakdawalla

Here's an animated gif showing how the moons were moving with respect to each other at the time the photo was taken.

Five moons simulation, July 29, 2011
Five moons simulation, July 29, 2011 A simulated view from the Rings Node Saturn Viewer through Cassini's Narrow-Angle Camera on July 29, 2011, when five moons passed through the field of view. Cassini took a "Kodak Moment" shot of all five at about 14:53:00, centered on Enceladus. The animation is sped up to 120 times actual speed. SETI Institute / Emily Lakdawalla

And here's a photo showing an intermediate step in the processing of this image.

A gaggle of moons (intermediate processing step)
A gaggle of moons (intermediate processing step) Red, green, and blue-filter images taken by Cassini on 29 July 2011 were aligned on the ansa of Saturn's rings, which appears its proper yellowish color. But the motions of the five moons between the acquisition of the three pictures cause them to spread out across the different color channels. NASA / JPL-Caltech / SSI / color composite by Emily Lakdawalla

"We're changing the world. Are you in?"
- CEO Bill Nye

Sign up for email updates