Uranus and its five major moons are depicted in this montage of images acquired by the Voyager 2 spacecraft during its January 1986 flyby of the planet. The moons, counterclockwise from bottom right, are Ariel , Miranda , Titania , Oberon and Umbriel . Voyager 2 passed between Miranda and Uranus during 1986, and returned this color composite of the moon. The carved dark streaks on the surface of this icy moon turned out to be ridges and valleys in higher resolution images. Such fractures and grooves in the satellite's surface indicate a complex geologic history.
Titania is the largest satellite of Uranus.
This high-resolution image of Titania is a composite of 2 images taken by Voyager 2 on January 24, 1986. Before the 1986 Voyager encounter, Uranus was known to have five moons. Those farthest from the planet have the highest density, and may consist of a silicate core covered by a thin, ice-rich crust. The moons show increasingly complex surface features closer to the planet. Umbriel is the darkest of the Uranian moons, and has an icy crust pockmarked by craters.