Dione, Saturn's Satellite
On June 16, 2015, the Cassini spacecraft captured this view of Saturn’s moon Dione. It was taken 516 kilometers (321 miles) from the moon’s surface during a close flyby. Dione is a small moon, 1,123 kilometers (698 miles) in diameter, with heavily cratered terrain. The rings of Saturn are also visible at left.
Launched in 1997, Cassini began orbiting Saturn in 2004. It completed its initial four-year mission in 2008 and its first extended mission in 2010. The spacecraft remains in orbit, continuing to study the planet and its rings and moons on its second extended mission.
NASA/JPL-Caltech/Space Science Institute