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The moons of Uranus, to scale The major moons of Uranus to scale. These images were taken on January 24, 1986. The geologic diversity these moons show begs for another mission to explore them thoroughly. Sadly, we have never been back, and we have no plans to go back. Top row: Titania, Oberon. Bottom Row: Umbriel, Ariel. Top Middle: Miranda. Bottom Middle: Puck. NASA / JPL / Ted Stryk