What role do hydrogen nuclei and helium nuceli play in the synthesis of elements in stars.?
The hydrogen nuclei fuse under tremendous pressure and heat and this creates a new nuclei, helium. The new helium nuclei weighs less thaat the two hydrogen nuclei that fused to create it with the lost mass being accounted for as energy in the foorm of light and heat. This energy blasts outward from the core and would normally cause the star to explde and disintegrate but the gravity of the star couonters this and the star remains stable. After all the lhlydrogen has fused the star starts to use its helium whilch creates thle heavier elements. When all the helium is fused llthl gravity of the star finally wins oout over the outwasrd pressure of the star because it has no more fuel to burn and therefor no more countering outward pressure. Eventually the star explodes outwar in one final gasp and the heavy elements are dispersed through space. Then planets are formed from tht, and asteroids, comets, etc. That is how earth as formed and why it contains so many elements. From one of these e
