This is due to the lack of sufficient time during the Big Bang's nucleosynthesis phase to produce carbon by the fusion of 4He nuclei and the very low concentrations of available beryllium-8.
Dette skyldes mangel på tilstrækkelig tid under Big Bang's nukleosyntese-fase til at producere carbon ved fusion af 4He-kerner og meget lave koncentrationer af tilgængelig beryllium-8.