Uranus is the seventh planet from the sun. It lies in the outer half of the solar system. It is the third largest planet and named after the god of the sky. The outer planets of Jupiter, Saturn, Neptune and Uranus are gas giants. Some consider Uranus an ice giant instead of a gas giant. Uranus has 27 known satellites and has a faint ring.
Photo: Uranus with a thin ring (Creative Commons: NASA).
Facts About Uranus
Size: radius of 25.6 thousand kilometers.
Mass: 14.5 times that of earth.
Gravity: 88% of earth.
Satellites: 27 satellites.
Rotation: 17 hours (length of a day).
Surface Temperatures: 76 °K.
Features of Uranus
The atmosphere of the planet consists of hydrogen (83%), helium (15%), methane (2%) and other gases. The interior planet consists of different forms of ice that includes water, ammonia and methane.
Like Saturn, the planet has rings. Scientists believe that these rings were formed by the destruction of at least one of her moons.
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Solar System Exploration, NASA.