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The Elements Forged in Stars

submitted by jwray

1 decade 6 years 6 months 3 weeks ago

Over 99.9% of atoms heavier than Helium-4 were formed via nuclear fusion inside stars. Other natural sources include spontaneous fission, big bang nucleosynthesis, cosmic ray spallation, radioactive decay, photodisintigration, neutron/alpha absorption, and (theoretically, I may have just made this up) ejection of material from neutron stars.