Big Bang nucleosynthesis

nucleosynthesis that occurred during the Big Bang

In physical cosmology, the Big Bang nucleosynthesis was an event that happened during the Big Bang.[1] It made elements heavier than hydrogen when the Universe was young. Most cosmologists believe that it happened roughly 10 seconds to 20 minutes after the Big Bang.[2] It is also calculated to have made most of the helium in the Universe and a very small amount of lithium. It also made two radioactive isotopes. They are tritium and beryllium-7.


  1. C., Patrignani (2016). Big Bang nucleosynthesis (PDF).
  2. Coc, Alain; Vangioni, Elisabeth (2017-07-23). "Primordial nucleosynthesis". International Journal of Modern Physics E. 26 (8): 1741002. arXiv:1707.01004. Bibcode:2017IJMPE..2641002C. doi:10.1142/S0218301317410026. ISSN 0218-3013. S2CID 119410875.