NASA
Nasa: Astronomy Picture of the Day: Uranus's Moon Umbriel
Brief overview of Umbriel from NASA. Answers the question "why is the moon so dark"? Provides additional links for more information. A NASA picture of the day.
Nine Planets
The Nine Planets: An Overview of the Solar System
A detailed overview of the history, mythology, and current scientific knowledge of each of the planets and moons in the solar system.
Nine Planets
The Nine Planets: Uranus
An excellent report on the planet Uranus. The site includes detailed information about the planet as well as links to information about Uranus moons, unmanned probes sent to explore Uranus, and an extensive set of images of the planet.
Nine Planets
The Nine Planets: Titania
A general overview of Uranus's largest moon, Titania. Includes a picture and additional links to other sites for more detailed information, making this a great site to check out on the subject.
Nine Planets
The Nine Planets: Uranus's Moon Umbriel
An overview of Uranus's third-largest moon, Umbriel. Provides good statistical data, as well as its discovery and surface structure. Links are also given throughout for additional information on related subjects.