NASA Cassini Image: Saturn’s moon Pandora and the F Ring

Saturn’s moon Pandora (at right center) helps shape the narrow F ring. 

Pandora (50 miles, or 81 kilometers across) orbits outside the F ring. 

Another shepherd moon Prometheus (53 miles, or 86 kilometers across), orbits inside, both helping to prevent the ring from spreading. 

Cassini spacecraft took the image in visible light with the wide-angle camera on March 8, 2014. 

Image released Aug. 11, 2014.

Credit: NASA