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The Light of Night
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As Cassini images often show, the Sun is not the only source of illumination in the Saturn System. The huge, reflective planet also shines upon its moons. The left side of this image is illuminated by the Sun, and most of the right side is lit by reflected light from Saturn. This image was acquired by Cassini two minutes after PIA09886 and looks almost directly at down onto the north pole of Dione (1,123 kilometers, 698 miles across) Several background stars made faint trails across the sky during this long exposure. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 22, 2008. The view was acquired at a distance of approximately 649,000 kilometers (403,000 miles) from Dione and at a Sun-Dione-spacecraft, or phase, angle of 99 degrees. Image scale is 4 kilometers (2 miles) per pixel. |
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Alliance Member Comments
Mercury_3488 (Apr 27, 2008 at 11:32 AM):
Very nice image of Dione.
Even in Saturn-shine on the night side on the large ice covered moon, a wide range of surface features are visible, displaying a dynamic past on Dione, one of the most interesting of Saturn's moons.
The overexposed day side will be ideal to search for possible geysers on the limb, a long shot I know, but worth a try.
Andrew Brown.
Even in Saturn-shine on the night side on the large ice covered moon, a wide range of surface features are visible, displaying a dynamic past on Dione, one of the most interesting of Saturn's moons.
The overexposed day side will be ideal to search for possible geysers on the limb, a long shot I know, but worth a try.
Andrew Brown.
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