NASA: Can You See Saturn’s Three Moons?
NASA says this is a photo of Saturn's three moons. But can you see all three?
The photo, taken by the Cassini spacecraft on September 24th,.shows Enceladus, Rhea, and Atlas. Eceladus and Rhea are easy to see, but Atlas is hard to make out. Notice the spec above the other two.
Here, Cassini has captured Enceladus (313 miles) above the rings and Rhea (949 miles) below. The comparatively tiny speck of Atlas (19 miles) can also be seen just above and to the left of Rhea, and just above the thin line of Saturn's F ring.
This view looks toward the unilluminated side of the rings from about 0.34 degrees below the ring plane.
The Cassini mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency.