Atmosphere of Uranus at the solstice of 1986, when "Voyager 2" passed by the planet, they were concentrated near the sunlit pole, making it dark in ultraviolet light. The outermost layer of the Uranian atmosphere, extending for thousands of kilometres, is the thermosphere/exosphere, which has a uniform temperature of around 800 to 850 K. This is much higher than, for instance, the 420 K observed in the thermosphere of Saturn. The heat sources necessary to sustain such high temperatures are not understood, since neither solar FUV/EUV radiation nor auroral activity can provide the necessary energy. The weak cooling efficiency due to the depletion
A Planet Called Treason get Lanik out of the eye of the Mueller public, as well as to prevent harm from coming to Lanik's supposed younger brother Dinte. The banishment comes in the form of sending Lanik as an emissary and spy to the Nkumai, a rival nation. Due to his radical regenerative body, Lanik has grown breasts, which makes him appear to be a woman. Using this subterfuge, he poses as an ambassador from the matriarchal nation of Bird in order to discover what the Nkumai are trading in exchange for their abundant metals, which have allowed them to dominate their region militarily.