A nearly full Rhea shines in the sunlight in this stunning space wallpaper taken in visible light with the Cassini spacecraft's narrow-angle camera on Sept. 10, 2013. Rhea (949 miles, or 1,527 kilometers across) is Saturn's second largest moon.
A nearly full Rhea shines in the sunlight in this stunning space wallpaper taken in visible light with the Cassini spacecraft's narrow-angle camera on Sept. 10, 2013. Rhea (949 miles, or 1,527 kilometers across) is Saturn's second largest moon.