Hmm, I haven't thought about the temperature of the sun, that's interesting. What is your speculation on the sun's location? I can't decide if it is under the firmament, inside the firmament, or outside the firmament, or some combination because it's height above earth seems impossible to measure (perhaps because it's not the same for different observers). Perhaps viewing the sun through the firmament distorts it's location, just like looking at objects through water. This might make it impossible to accurately measure.