28 settembre 2007

Stars and blood

The presence of heavier chemical elements (as Calcium, Iron, etc.) is not explained just as result of plain, boring nuclear fusion that makes stars burn. This is why Hydrogen and Helium are so abundant. The only way to form heavier elements is during a supernova explosion.

So, Calcium in your bones and Iron in your blood are nothing but pieces of dead stars.
This fact never cease to amaze me.

Astronomy Online - Modeling Supernova

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