Uranus: The Coldest Planet in the Solar System

Uranus has 13 rings and like Venus, it rotates east to west. It also rotates at a near 90 degree angle from the plane of its orbit. So this gives it the appearance of spinning on its side. Scientists think that billions of years ago during the formation of the solar system, Uranus very likely suffered a colossal impact by an Earth sized or Mars sized object.