Super Novas Create Heavy Elements: Does this absorb or release energy?

AI Thread Summary
A massive star collapses during iron production, as iron absorbs energy, leading to the formation of heavier elements. The collapse generates extra mass, requiring additional energy sourced from the kinetic energy of particles involved in the reaction. The gravitational compression facilitates this process, allowing heavier elements to absorb energy before being expelled. The discussion centers on whether energy is absorbed or released during the creation of these heavier elements. Ultimately, the consensus is that the process involves energy absorption.
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A massive star collapses when it begins to create iron in the normal fusion sequence. Iron absorbs energy. The collapse then produces all the heavier elements. When the heavier elements are created is energy absorbed or released?
 
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Extra energy is needed to create the extra mass. It comes from the kinetic energy of the particles going into the reaction.
 
Mathman

Bingo!
 
Agreed. The compression of gravity does all the work as heavier elements absorb the energy before being blasted out.
 

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