In old stars there is too little Lithium -- 7, a primordial isotope which was created along with the universe in the first 3 minutes, and scientists do not know why. A team of scientists revisited this 'lithium problem.' Their results provide a new explanation that certifies the validity of the Big Bang Nucleosynthesis and calls for attention to the interaction between the stars and the environment in which the stars were formed.
via Science Daily
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