The sun produces a great deal of energy and radiation as a result of the nuclear fission occurring within it. You can think of the sun as a giant, very old nuclear explosion. That energy is captured...
Well we dont know that, put we do know that Jehovah god created all things.
No it does not live.
Nope, the simple explanation is that the sun is made of something called plasma, which is way too hot to support any form of life.