Alright. Now, I understand that the Sun is 1/2 way through its complete H-He fusion cycle, and I realize that after this fusion cycle, it will pass through all the elements until Fe, (i don't know whether it passes through each element in 7 seconds, or it takes 7 seconds for each element). My question is, if the atoms are getting larger as you go farther down the table, and the Sun would theoretically expand (possibly) to Jupiter's position in that short time, and considering that matter cannot travel faster than the speed of light, how does this work? I know, I shouldn't think in classical physics terms, but I can't seem to find an answer. The reason being, is that it takes 8 minutes for light to reach Earth from the Sun, however, the Sun would be expanding far beyond Earth in a matter of seconds. Why? P.S. my Physics teacher had told me how far the Sun would expand to, so I'm using his information.