NASA Cassini spacecraft observes three of Saturn moons set against the darkened night side of the planet. Seen here are Rhea, closest to Cassini, Enceladus to right of Rhea, and Dione, left of Rhea.
NASA Cassini spacecraft observes three of Saturn moons set against the darkened night side of the planet. Seen here are Rhea, closest to Cassini, Enceladus to right of Rhea, and Dione, left of Rhea.