From Earth the Uranus in
study by a telescope. Within walking distance of the cloud tops and a pressure
of 0.4 times that recorded on Earth at sea level the temperature is -214 ° C.
The chemical composition of the uppermost layer of the atmosphere is mostly
hydrogen gas while the bulk of Uranus is composed of heavy material. Uranus
should be composed predominantly water ice, ammonia and methane compounds that
because the most abundant elements (hydrogen, oxygen, carbon and nitrogen) are
the usual ice in the solar system. Its south pole exposed to the sun for
decades seemed stained with a reddish tinge; a series of concentric waves could
be clearly seen in the images processed by the computer and handfuls high
luminous clouds swept from east to west by winds of up to 500 km / hour.
