|
Uranus is rarely visible to the naked eye. Its diameter is four times greater than that of the Earth, and its volume about 64 times greater; but it is only 15 times as heavy because it is composed of lighter materials. Period of rotation is 10 hrs. 45 mins. and it takes 84 years to complete its orbit, the diameter of which is 3,600,000,000 miles. Its orbital speed is 15,110 m.p.h. approximately. The orbits of its satellites are unique in that they all lie in the same plane, nearly at right angles to the plane of the orbit of Uranus round the Sun.
|
