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primordial nucleosynthesis | The process, which took place between one second and 3-4 minutes after the beginning, in which the protons and neutrons of the primordial soup condensed to form the lightest atomic nuclei: Deuterium, Helium-3, Helium-4, and Lithium-7. See isotope and Lithium. | big-bang nucleosynthesis |
stellar nucleosynthesis | The production of heavy nuclei from the fusion of lighter ones within a star. The Sun presently converts hydrogen into helium. | |
X-process | The unknown nucleosynthetic process that Burbidge, Burbidge, Fowler, and Hoyle said had formed the light nuclei deuterium, lithium, beryllium, and boron. | |