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How far down does Saturn's D ring go?

How far down does Saturn's D ring go?

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NASA / JPL / SSI / Emily Lakdawalla

How far down does Saturn's D ring go?
An observation of the shadowed side of Saturn's taken by Cassini on September 2, 2010 was designed to see just how far the dusty D ring extends toward the planet. The sensitive camera exposed this image for 1.2 seconds in order to see the faint D ring, overexposing the outermost F ring. (Typical Cassini image exposure lengths to see moons and planet are tens to a few hundred milliseconds.) The set of observations showed that Cassini needed to pass within 2000 kilometers of the planet's cloud tops in order to be reasonably safe from D ring dust.

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. For uses not allowed by that license, contact us to request publication permission from the copyright holder: Emily Lakdawalla

Original image data dated on or about September 2, 2010

Explore related images: pretty pictures, Cassini, amateur image processing, Saturn, Saturn's rings

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