As indicated by Wikipedia the Sun's "capacity thickness" is "around 276.5 W/m3, an esteem that all the more about approximates that of reptile digestion or a fertilizer heap than of a nuclear bomb." My inquiry is, so why is the Sun's center so hot (15.7 million K)? Utilizing a nursery worker's (not a physicist's instinct) it appears to be obvious that you can't continue expanding the temperature of a fertilizer store just by making the load bigger.