Flying Saucers!

Two moons of Saturn are shaped a bit like flying saucers, as seen in these images from the orbiting Cassini spacecraft. The top images show Atlas from the side (left) and almost above, while the bottom images show Pan (at right, bisected by Saturn's rings). These small moons acquired their saucer shapes by pulling in bits of ring material, which build up around their waists. [NASA/JPL/SSI]