CICLOPS: Cassini Imaging Central Laboratory for OPerationS

Rhea Transits Saturn
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Rhea Transits Saturn
PIA 07806

Avg Rating: 9.32/10

Movie 800x800:
Flash 845 KB
Quicktime 3.9 MB


Rhea Transits Saturn
PIA 07806

Avg Rating: 8.71/10

Still Image 980x980:
PNG 414 KB
  The slim crescent of Rhea glides silently onto the featureless golden face of Saturn in this mesmerizing color movie. In an interplay of contrast and shadow, the moon goes dark against the planet, and then its crescent suddenly brightens as it slips in front of Saturn's night side.

This view looks down onto the unlit side of Saturn's rings, which cast soft, linear shadows onto the planet's northern hemisphere.

The movie was created using 60 images taken using red, green and blue spectral filters over a period of about 45 minutes.

The images were acquired by the Cassini spacecraft wide-angle camera on March 21, 2006 from a distance of approximately 221,000 kilometers (137,000 miles) from Rhea. The image scale is approximately 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 Cassini-Huygens mission for NASA's Science Mission Directorate, Washington, D.C. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colo.

For more information about the Cassini-Huygens mission, visit and the Cassini imaging team home page,

Credit: NASA/JPL/Space Science Institute
Released: June 21, 2006 (PIA 07806)
Image/Caption Information

Alliance Member Comments
preston (CICLOPS) (Apr 7, 2008 at 10:23 AM):
rbethune: You'll see that we've made the correction. We're pretty busy here, and it slipped our minds. But thanks go to ugenius for pointing out the error back in August.
rbethune (Apr 5, 2008 at 7:20 PM):
Since Red-Dragon correctly pointed out that this image is distinctly mis-titled, over a year has passed without CICLOPS action. That is unfortunate.
ugenius (Aug 30, 2007 at 3:06 AM):
This is a nice image, but it is mislabeled. It should be "Rhea transits Saturn."
Transits are eclipses where a small body passes over a larger one; occultations involve a larger body passing over a smaller one, hence making it hidden --- which is
where the word "occult" comes from.
Red_dragon (Jan 24, 2007 at 7:56 AM):
Impressive, of course.

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