Big bang reconciled with 'missing' lithium


One of the niggling things about big bang theory is that it predicts the universe should have far more lithium than we can find. Now we can all rest easy. The stars, it seems, have destroyed the lithium. The lightest elements – hydrogen, helium and lithium – were produced shortly after the big bang. The abundances of hydrogen and helium in the atmospheres of the universe’s oldest stars fit the theory, but there should be two or three times as much lithium. One explanation is that the primordial lithium could have diffused towards the centres of stars and never resurfaced,
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