Astronomy Picture of the Day

In, through, and beyond Saturn's rings are four moons: Titan, Dione, Pandora and Pan. In, Through, and Beyond Saturn's Rings  Image Credit: Cassini Imaging Team, ISS, JPL, ESA, NASA Explanation: A fourth moon is visible on the above image if you look hard enough. First -- and furthest in the background -- is Titan, the largest moon of Saturn and one of the larger moons in the Solar System. The dark feature across the top of this perpetually cloudy world is the north polar hood. ... Full Story