Titania, an airless moon of Uranus, is cold and its day is 84 years long. See what it would be like for astronauts on Titania in this Space.com infographic.
Titania is the largest of the 27 known moons of Uranus. Titania is about 980 miles (1,578 kilometers) across.
Uranus is tipped on its side relative to its orbit, so the poles of Uranus and its satellites experience 42 years of sunlight followed by 42 years of night. [Photos of Uranus, the Tilted Planet]
Titania is about half rock and half ice, with a rock crust over an icy mantle. As Titania has no atmosphere, there is no weather. Uranus would appear about 20 times larger in the sky of Titania than the moon does in the sky of Earth.
Gravity on Titania is about 4 percent that of Earth. The average surface temperature on Titania is minus 334 Fahrenheit (minus 203 Celsius). Titania rotates in 8.71 Earth days, but because its spin axis is tilted nearly 90 degrees, a "day" (sunrise to sunrise) would be 84 Earth years – the time it takes Uranus to orbit the sun.
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