How does anyone explain the amount of energy expelled by the sun compared to its size? ... It's definetly powered by fission.
First off, I think you mean fusion, not fission, but it's a minor point.
It might also be powered by collapse. As the sun slowly contracts under its own gravity, gravitational potential energy is converted into radiated energy.
Then again, I'm not sure what you think is the problem with the sun's energy: does it seem to you to be too much for the FE model, or too little?
Fission requires space, lots of space.
Hmmm.... powerful thermonuclear detonations are harmless hundreds of miles away, and the sun is thousands of miles away. Power decreases by the inverse of the square of the distance, right? So the irradiation of a square meter on the sun's surface is 9,000,000 times stronger than the irradiation of a square meter on the Earth's surface.
-Erasmus