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Nice link DoctorBeaver; it explains the main sequence very well. I glean from the link that the main sequence stars end with the helium burning process and never get to the iron creation stage. So to make iron, maybe we need monster stars out of the main sequence.
During this phase some Carbon and Helium will fuse12C + 4He --> 16Oresulting in the formation of a Carbon-Oxygen core. When the Helium is exhausted in the core of a star like the sun, no further reactions are possible. Helium burning may occur in a shell surrounding thecore for a brief period, but the lifetime of the star is essentially over.
Sorry for the confusion. I was specifically interested in the Dark Matter foming Dark Stars.If it interacted with Gravity does it form dark stars.
Dark matter interacts only by gravity and it cannot collect to make small dense bodies like stars. The reason for this is that it cannot cool down by radiating electromagnetic energy it can only cool down by radiating gravitational energy.
With regard dark matter, I had not come across that Cambridge research. That makes dark matter even stranger - interacts with gravity but stays apart. hmmmmm...
I heard this on one of the podcasts. How hot is x-ray hot?
Quote from: Chemistry4me on 01/04/2009 09:46:45I heard this on one of the podcasts. How hot is x-ray hot?No takers?