Triton, the largest moon of Neptune—The Cantaloupe Moon, with its literal cantaloupe-like terrain and active geysers, Triton is one of the most intriguing objects in the solar system. Aside from these ...

The illuminated crescents of Neptune (foreground) and its largest moon Triton (background) showcase how impressively large Triton, the 7th largest moon in all of the Solar System, is in comparison.

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The planet Neptune reaches “opposition” today. With Earth precisely between it and the Sun, the pale blue ice giant never looks brighter during the year to planet-watchers as it does this week. Last ...