Oberon is the outermost major moon of the planet Uranus. It is the second-largest and second most massive of the planet’s moons. The Uranian system has been studied up close only once by Voyager 2  in January, 1986. Several of those images have been used to map about 40% of the moon’s surface. Oberon is named after the mythical king of the fairies in Shakespeare’s A Midsummer Night’s Dream.

Image Credit: NASA

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