A Quartet of Moons
"The Cassini spacecraft has sent back yet another jaw-dropping image (just one of thousands now !) of four of Saturn’s moons posing around and inside the giant planet’s rings.
Titan is the largest in the background, and also the largest moon at 5,150 kilometres (3,200 miles) across, with Dione in front of it, which is 1,123 kilometres (698 miles) in diameter. Just to the right of the edge of the rings is Pandora, which is only about 81 kilometres (50 miles) in diameter. Tiny little Pan, only about 28 kilometres (17 miles) across, can just barely be seen as a speck inside the Encke Gap of the A ring on the left side of the image (look closely !).
via universetoday.com