Face of Saturn transited by four of its moons.

Fantastic Hubble image of the transit of four moons — Enceladus, Dione, the giant orange moon Titan, and Mimas — across Saturn’s face. Icy white Enceladus and Dione are on the left, casting their black shadows on the cloud surface of the planet. Mimas is on the right edge of Saturn’s disc, just above the rings. via HubbleSite.