What part of the physics of geology do you not beleive? From that comment I am assuming you are a creationist and a young earther. BTW...MD expat was right, the professor was just being nice to you. He was telling you "Show me the math". Bless your heart.
If your theory was correct, then the sun and all stars would not have a fusion reaction going on in their cores. The pressure caused by the huge mass of hydrogen creates the heat necessary to start the fusion reaction and maintain it.
See, well you assume wrong.
I don't have to come up with a replacement theory to discard an obviously inconsistent theory.
Suggesting that we really understand what is going on inside stars is only slightly more fantastic than suggesting that we know what is going on inside the earth.
ML/NJ