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A pair of Voyager 2 portraits of Neptune’s ring system, which appears backlit by feeble sunlight. The ring arcs seen in Figure 17 were not captured in either of these images; by unfortunate coincidence they were taken on the opposite side of the planet when these frames were taken 1.5 hours apart.
Figure 16-16 of Burns, J. A. 1998. Planetary Rings. In The New Solar System, 4th Edition_ (J. K. Beatty, C. C. Peters, and A. Chaikin, Eds.), Cambridge University Press. Used by permission.