During which event are elements heavier than iron created?
Answer
A supernova explosion
While normal stellar fusion processes can synthesize elements up to iron, they lack the capacity to create anything heavier. Elements such as gold, silver, and uranium require the extreme heat and intense neutron flux generated during the final, violent moments of a supernova explosion. This explosive event provides the energy needed to forge these complex heavy metals, which are then scattered across space by the resulting shockwave.
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