Saturn and Beyond the Infinite

For more than a decade, the Cassini vehicle has been studying Saturn, the rings of Saturn and the many moons that circle that gas giant. The mission is winding towards a close (and no replacement vehicle is waiting in the wings, which is a shame) but still returning data and stunning views such as today's Astronomy Picture of the Day, this image of Dione, taking during Cassini's last planned flyby of that close-in body.