Cassini pierced the ring plane and rounded Saturn on Oct. 27, 2004, capturing this view of the dark portion of the rings. A portion of the planet's atmosphere is visible here, as is its shadow on the surface of the rings.

Credit: NASA/JPL/Space Science Institute Download larger image version here

The image was taken with the Cassini spacecraft wide angle camera on Oct. 27, 2004, at a distance of about 618,000 kilometers (384,000 miles) from Saturn through a filter sensitive to wavelengths of infrared light centered at 1001 nanometers. The image scale is 33 kilometers (21 miles) per pixel.

Night side ringplane

The usually bright B ring (at center in below picture) appears very dim in this view of the rings taken on the side of the rings that is not illuminated. The scene resembles a photographic negative, with bright and dark areas reversed (although in some places in the rings, the blackness of space is seen.) From this viewing angle, the rings are lit from below: both dense and empty regions are dark, and regions of intermediate particle density are bright.

Credit: NASA/JPL/Space Science Institute Download larger image version here

The image was taken with the Cassini spacecraft wide angle camera on Oct. 27, 2004, at a distance of about 631,000 kilometers (392,000 miles) from Saturn through a filter sensitive to wavelengths of visible violet light. The image scale is 34 kilometers (21 miles) per pixel.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Cassini-Huygens mission for NASA's Office of Space Science, Washington, D.C. The Cassini orbiter and its two onboard cameras, were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.