Figure 2. Assumed creation of stars. The first stars start as hypothetical, metal-free Population III stars after the big bang, which then within a few hundred million years become supernovae and seed the interstellar space with sufficient heavy elements to produce Population II stars. These stars then in turn become supernovae and finally produce the material for Population I stars, which eventually may form a supermassive black hole in the galactic centre

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An Element in a Paradigm Shift? – Could Population II Stars Actually be Younger than Population I stars?

Arne Bergstrom

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