Distances...

Caption NASA originale:"This sweeping view from Cassini gives a sense of the awesome scale of the planet's disk-like ring system, which stretches many thousands of kilometers into the distance. The shepherd moon Prometheus maintains a lonely sojourn with the thin, outer F-Ring.
A notable brightening of the F-Ring material is visible ahead of Prometheus in its orbit, near the right side of this image.
The view was obtained in visible light with the Cassini spacecraft narrow-angle camera on Feb. 18, 2005, at a distance of approximately 1 MKM (approx. 621.000 miles) from Prometheus and at a phase angle of 105°. The image scale is 6 Km per pixel".