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