Saturn's moons Pandora, Prometheus and Epimetheus

Prometheus (102 kilometres across) and Pandora (84 kilometres across), are seen here shepherding the planet’s narrow F-ring. Epimetheus is 116 kilometres across.

This image was taken with the narrow angle camera on the NASA?ESA/ASI Cassini-Huygens spacecraft on 1 May 2004, at a distance of 31.4 million kilometres from Saturn. Image resolution is 187 kilometres per pixel.