Two moons, Rhea and Dione, join the planet and its rings in this view from NASA Cassini spacecraft. Rhea and Dione are respectively the second and fourth largest moons of Saturn, but they are tiny compared to the planet.
Two moons, Rhea and Dione, join the planet and its rings in this view from NASA Cassini spacecraft. Rhea and Dione are respectively the second and fourth largest moons of Saturn, but they are tiny compared to the planet.