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PatrickKieliszek t1_je1s5yi wrote

There are actually some exothermic reactions that produce elements more massive than iron.

However, these are usually very short lived in the time immediately before supernovae and are limited by photodisintegration. They don't meaningfully contribute to the amount of heavier elements (Which are primarily produced during nova).


Mord42 t1_je33pck wrote

That's interesting! Thanks for the information.