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Dione unmagnified
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Caption NASA originale:"This unmagnified view of Saturn's moon Dione shows the moon's bright, wispy terrain, along with several large impact craters. Two of the craters have central peaks. North on Dione is up.
This view shows principally the anti-Saturn hemisphere on Dione.
It is now clear why low-resolution NASA Voyager spacecraft images gave the impression that the Dionian wispy terrain might be bright ice deposits: HR Cassini images have shown these to be complex systems of braided (to braid--->intrecciare) tectonic fractures.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 25, 2005, at a distance of approx. 2,8 MKM (such as approx 1,7 MMs) from Dione and at a phase angle of 60°.
The image scale is 17 Km (approx. 11 miles) per pixel".
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