Like something from science fiction - but it ain't:

http://photojournal.jpl.nasa.gov/catalog/PIA08158

Original Caption Released with Image:

The Cassini spacecraft looks toward the Saturnian horizon as Dione and Janus glide past.

A few craters are visible on Dione (1,126 kilometers, or 700 miles across). Janus (181 kilometers, or113 miles across) is slightly blurred due to its motion during the exposure.

The rings appear essentially edge-on in this view, as the Cassini spacecraft continues its recent activities close to the ringplane.

The image was taken with the Cassini spacecraft narrow-angle camera on March 10, 2006, using a filter sensitive to wavelengths of infrared light centered at 750 nanometers. The image was acquired at a distance of approximately 2.9 million kilometers (1.8 million miles) from Saturn. The image scale is 17 kilometers (11 miles) per pixel.