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Primordial helium further confirms our understanding of the Big Bang
In the early moments of the big bang, two primary elements were forged: hydrogen and helium. Alongside tiny traces of lithium, the early universe consisted of roughly three parts hydrogen to one part helium. All heavier elements were later created through stellar processes like fusion in stars, supernovae, and neutron star collisions. Despite access limitations on certain sources, primordial composition remains a cornerstone of cosmological models.