Titania is the largest moon of Uranus, discovered in 1787 by William Herschel. It orbits Uranus at a distance of 271,000 miles (436,000 km), with a period of 8.71 days. Its diameter of 980 miles (1580 km) makes it the eighth-largest natural satellite in the Solar System.
The Voyager 2 spacecraft photographed Titania's surface during its Uranus flyby in 1986. Titania is covered with small craters and a few large impact basins. Its surface shows many faults and canyons, indicating that it has been molded by internal forces in the past. One of these canyons is more than 1000 miles (1600 km) long - dwarfing the scale of the Grand Canyon on Earth, and in the same class as Valles Marineris on Mars or Ithaca Chasma on Saturn's moon Tethys.