Saturn’s two largest moons meet in the sky in a rare apparent embrace. Smog-enshrouded Titan (5,150 km across) glows to the left of Rhea (1,528 km across).
The image was taken in visible light by the Cassini spacecraft using its narrow-angle camera in 2006. It was about 3.6 million km from Rhea and 5.3 million km from Titan. The moons are in crescent phase.
Image Cedit NASA