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Uranus: Overview Uranus: Moons Uranus: Rings Uranus: Gallery Uranus: Facts & Figures Uranus: Kid's Eye View
Uranus looks like a big blue sphere in this true-color image.
Uranus as it would appear to human eyes.
Uranus:

Once considered one of the blander-looking planets, Uranus (pronounced YOOR un nus) has been revealed as a dynamic world with some of the brightest clouds in the outer solar system and 11 rings. Uranus gets its blue-green color from methane gas above the deeper cloud layers (methane absorbs red light and reflects blue light).

Uranus was discovered in 1781 by astronomer William Herschel, who at first believed it to be a comet. This seventh planet from the Sun is so distant that it takes 84 years to complete an orbit.

Uranus is classified as a "gas giant" planet because it has no solid surface. The atmosphere of Uranus is hydrogen and helium, with a small amount of methane and traces of water and ammonia. The bulk (80 percent or more) of the mass of Uranus is contained in an extended liquid core consisting primarily of "icy" materials (water, methane, and ammonia), with higher-density material at depth.

Read More About Uranus

Just the Facts
Distance from the Sun: 
2,870,972,200 km
Equatorial Radius: 
25,559 km
Volume: 
69,142,000,000,000 km3
Mass: 
86,849,000,000,000,000,000,000,
000 kg
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