|MadSci Network: Astronomy|
Correct?: Normal stellar thermonuclear reactions preclude the manufacture of heavier elements. Common stars burn out, making little heavier than carbon. Novas create the heavier elements. Our solar system came from an earlier stellar debris field. How is the abundance of heavier elements created? Gravitational sieve draws heavier elements in and solar wind blows them out to mass dependant diameters? The debris field that would contain all of the mass of our solar system, plus mass lost in formation would be huge. The proliferation of Life depends upon the concentration of heavier elements just as much as any other demand. Without a clear explanation of how sparsely created and distributed heavy elements could concentrate into spacial pinpoints like planets, the prediction of the likelihood of life elsewhere would seem impossibly vague and off the mark. Why heavy Oort objects, light gas giants, heavy planets, light Sun? How does it work? Just because the soup must have been so thick here, is it likely to be that thick with heavy elements in most proto star systems?
Re: Heavy element distribution and concentration in the Universe
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