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 destroy all of the Ambassadors. With no way for any Family to get iron, Lanik concludes, the wars would end and there would be peace. The regions of Treason are named after each of the banished inhabitants. The occupations of the founders are listed (where known). The regions are (alphabetically): A Planet Called Treason A Planet Called Treason (1979) is a science fiction novel by Orson Scott Card. It was originally published by St Martin's Press and Dell Publishing Co. After being heavily revised, the book was republished under the title Treason (1988) by St. Martin's Press. The premise of