Started this to continue a fascinating conversation about the origin of various elements and to save another thread from derail: The story so far: Most of the heavier elements come from a few supermassive stars (for elements up to iron) or from supernovae (for elements heavier than iron, which is the highest entropy state of matter). One member asserted (perhaps in jest) that this is all an unprovable science based fairy tale. A periodic table was presented showing the origin of each element ( @Vils -could that be reposted here?) which shows that the story is a little more complicated again. What is a white dwarf? A neutron star? How big is a massive star? What causes a supernova?