PIA07515: Moon Against the Shadows

Moon Against the Shadows


This spectacular and disorienting maze of lines is a Cassini portrait of the gas giant Saturn, its rings and its small, icy moon Mimas. The rings cast dark shadows across Saturn's northern hemisphere, creating a photonegative effect: dark sections are dense and block the Sun, while bright sections are less dense areas or gaps in the rings, which are more transparent to sunlight.

Saturn's moon Mimas (397 kilometers, or 247 miles across) is seen here against the backdrop created by the shadow of the dense B ring. Above Mimas and the B ring shadow can be seen the broad gap of the Cassini Division. The actual Cassini Division, which divides the A and B rings, is visible about one-third of the way up from the bottom of the image.

This view was obtained in visible light with the Cassini spacecraft narrow-angle camera on Oct. 15, 2004, at a distance of approximately 4.7 million kilometers (2.9 million miles) from Saturn. The image scale is 28 kilometers (17 miles) per pixel.

This image was taken from beneath the plane of Saturn's rings. It is similar to the serene portrait provided by Cassini in a natural color view from November, 2004 (see PIA06142 ).

Background Info:

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 mission for NASA's Science Mission Directorate, 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.

For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov . For additional images visit the Cassini imaging team homepage http://ciclops.org .

Cataloging Keywords:

Name Value Additional Values
Target Saturn A Ring, B Ring, Cassini Division, Mimas, Saturn Rings, Sun
System Saturn
Target Type Planet Gap, Ring, Satellite, Sun
Mission Cassini-Huygens
Instrument Host Cassini Orbiter
Host Type Orbiter
Instrument Imaging Science Subsystem (ISS)
Detector Narrow Angle Camera
Extra Keywords Grayscale, Shadow
Acquisition Date
Release Date 2005-06-08
Date in Caption 2004-10-15
Image Credit NASA/JPL/Space Science Institute
Source photojournal.jpl.nasa.gov/catalog/PIA07515
Identifier PIA07515