Forgive me but I'm tired of egg-heads stating as fact "theories." Theories are nothing more than glorified hunches and until actual evidence (like a physical sample of the material burning on the Sun collected off the Sun) that's all this "hunch" will be.
You might be surprised what a bunch of "egg-heads" can do. If it wasn't for the "egg-heads" of this country, we'd probably be a Russian satellite state, as they would have gotten the atom bomb first (An man named Arthur Eddington figured that the Sun an off shoot of the atom bomb research is one of that ways how we know what reactions power the sun).
One of the things that chemists and astrochemists have been doing for the past 70 years is understanding chemical reactions. The idea that nucleosynthesis of elements in the universe comes naturally from the stellar lifecycle (and from the Big Bang) comes straight from observations that scientists have been gathering from laboratories right here on earth.
We can tell exactly the composition of the Sun and other stars from their spectra obtained through telescopes, and those observations are well known, having been directly observed in labs all over the planet back in the 1920's and 30s (indeed, they can now be verified in labs that are taught in Astro 101 class in every College and University on the planet, and in an exhibit in the Nat'l Air and Space Museum in DC). We know all about what exists between here and the sun because we have had satellites such as SOHO and other satellites observing the Sun and the planets at every concievable direction that you can think of. We can use physics and chemistry obtained experimentally along with basic observables (like density and temperature) to determine boundary conditions of the environment at the surface of the Sun. With that and a knowledge of what fusion reactions are possible at what range of temperatures (which are derived from theoretical physics and chemistry), it's pretty simple to understand what's going on inside a star, and much of the work was done in this field long before the development of the modern personal computer (i.e. before 1975). A Nobel Prize in Physics was given to Willam Fowler in 1983 for his work done in this field back in the 40's and 50's This stuff is about as well known as you can get without actually building a star in your backyard.
If you can't deal with deductive reasoning and logic, then don't ever set foot into a jury box, you wouldn't believe they things they try to sneak by you with that stuff in a trial.
Sheeez people. If you wish to worship yourselves go for it but stop addressing me k?
Thanks.