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Neptune on Triton's Horizon

Photo: Neptune seen from Triton's horizon
The bright blue marble of Neptune glows across the horizon of its scarred and pockmarked largest moon, Triton, in this composite image. The foreground is a computer-generated view of Triton's maria—large, flat areas—as they would appear from a point approximately 28 miles (45 kilometers) above the surface.
Photograph courtesy NASA/JPL

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