Casting a Shadow
Blazing like an icy torch, the plume of Enceladus shines in scattered
sunlight as the moon casts a shadow onto Saturn's E ring. Some of the tiny
ice particles erupted from the moon's south polar region go into Saturn
orbit, forming the doughnut-shaped ring, onto which the moon's shadow is
cast in this view.
The shadow of Enceladus (505 kilometers, or 314 miles across) stretches
away to the upper left at around the 10 o'clock position. The
Sun-Enceladus-spacecraft, or phase, angle is 164 degrees here, with the
Sun being located toward the lower right. This means that Enceladus'
shadow extends toward the Cassini spacecraft -- through part of the E
Some of the bright dots in this heavily processed view are background
stars. Others are due to cosmic ray hits on the camera detector.
The image was taken in visible light with the Cassini spacecraft
narrow-angle camera on Aug. 11, 2006 at a distance of approximately 2.2
million kilometers (1.3 million miles) from Enceladus. Image scale is 13
kilometers (8 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 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 operations center is based at the Space
Science Institute in Boulder, Colo.
For more information about the Cassini-Huygens mission visit
http://saturn.jpl.nasa.gov/home/index.cfm. The Cassini imaging team
homepage is at http://ciclops.org.
courtesy NASA/JPL/Space Science Institute
image id: PIA08921