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the seventh planet of solar system discovered - 1781 by W. Herschel temperature -210 ͦC typical blue-green colour

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The rotational period of the interior is 17 hours He has 27 known natural satellites In 1986 NASA's Voyager 2 visited Uranus. Uranus has a complicated planetary ring system, which was the second such system to be discovered in the Solar System after Saturn's. Uranus revolves around the Sun once every 84 Earth years.

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PLANETARY RINGS - composed of extremely dark particles - thirteen distinct rings are presently known - extremely narrow - a few kilometres wide. - rings – grey - discovered – 10.03.1977 - december 2005- detected a pair of previously unknown rings - methane - absorbs red light, giving Uranus its blue-green color - are named 6, 5, 4, Alpha, Beta, Eta, Gamma, Delta, and Epsilon - moons – count –27 –icy moons

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