The sun's energy should be nonexistent. The Hydrogen and Helium are not nearly hot enough for fusion to occur. The sun stays burning due to a phenomenon called quantum tunneling. That is where particles use the uncertainty principle to go around energy barriers. This is the same thing as someone standing next to a door, and they unexpectedly pop out on the other side. There is nothing stopping that from happening, there is nothing in the laws of physics that say that cannot happen. Also, the uncertainty principle is what allows computer hard drives to work. Um not going into that though.
