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| Shepherd
Satellites The discovery of two shepherd satellites has advanced our understanding of the structure of the Uranian rings. The moons, Cordelia (1986U7) and Ophelia (1986U8), are seen here on either side of the bright epsilon ring; all 9 of the known Uranian rings are also visible. The epsilon ring appears surrounded by a dark halo as a result of image processing; occasional blips seen on the ring are also artifacts. Lying inward from the epsilon ring are the delta, gamma and eta rings; the beta and alpha rings; and finally the barely visible 4, 5 and 6 rings. The rings have been studied since their discovery in 1977. (Courtesy NASA/JPL) |
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Copyright � 1998 Michael Ammar.
