Uranus is the last planet in the solar system that we might be able to see without the aid of binoculars or a telescope. Uranus is another planet that has rings, though very faint and are not visible from Earth. The rings were originally discovered in 1977 prior to Voyager. Uranus is made up primarily of methane gas. The most unique feature of Uranus is that it is tilted only 8° from the plane of its orbit. In other words, it is almost lying on its side! Scientists think that maybe something ran into Uranus and knocked it over...
Uranus' Satellites: Miranda, Ariel, and Oberon.