The planet Vexillium sits in a vacuum with a thin atmosphere of its own slowly baking under the glare of Sol, Urun, the sun. As sunlight approaches the planet in parallel lines, the middle surfaces of the Vexillium sphere will receive far more intense sunlight than the poles. Image:Vex climate 00.gif Reduce, for a moment, the three dimensions of Vexillium to two, a circle. The same amount of sunlight hits the circle at Area A as hits Area B, yet Area A is smaller (or shorter on our two dimensional planet) than Area B. * Sorry, why do clouds only form over humid, low pressure places?