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The limb of Saturn
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Caption NASA originale."Saturn's B and C-Rings disappear behind the immense Planet. Where they meet the limb, the Rings appear to bend slightly owing to upper-atmospheric refraction.
Crenulations - such as the irregularly wavy or serrated features - in the Planet's clouds denote the locations of turbulent belt/zone boundaries.
The image was taken using a spectral filter sensitive to wavelengths of infrared light centered at 728 nanometers. The view was obtained with the Cassini spacecraft wide-angle camera on Aug. 16, 2006 at a distance of approx. 256.000 Km (about 159.000 miles) from Saturn. Image scale is roughly 12 Km (about 7 miles) per pixel".
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