Space - Saturn: moons cast shadows during rare ring alignment

Every fifteen years, Saturn's majestic rings tilt nearly edge-on toward the Sun and Earth. This special orbital geometry was captured in a sequence of images by the Hubble Space Telescope. As the moons Dione, Mimas, and Enceladus traveled across Saturn's disk, their alignment caused them to cast elongated shadows directly onto the planet and its thin rings. Images also recorded the giant moon Titan tracking its own circular shadow across the gas giant's cloud tops.

Source: ESA/Hubble