The Universe
Yours to Discover
Once considered one of the blander-looking planets, Uranus has been revealed as a dynamic world with some of the brightest clouds in the outer solar system and 11 dark rings. The first planet found with the aid of a telescope, Uranus was discovered in 1781 by astronomer William Herschel. Uranus is the seventh planet from the Sun and is so distant that it takes 84 years to complete one orbit.
Uranus, with no solid surface, is one of the gas giant planets. (The others are Jupiter, Saturn, and Neptune.) Its atmosphere is composed primarily of hydrogen and helium, with a small amount of |