What is Big Bang nucleosynthesis?
In [[physical cosmology]], the '''Big Bang nucleosynthesis''' was an event that happened during the [[Big Bang]].<ref>{{Cite book|url=http://pdg.lbl.gov/2016/reviews/rpp2016-rev-bbang-nucleosynthesis.pdf|title=Big Bang nucleosynthesis|last=C.|first=Patrignani|year=2016}}</ref> It made [[Chemical element|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.<ref>{{Cite journal|last1=Coc|first1=Alain|last2=Vangioni|first2=Elisabeth|date=2017-07-23|title=Primordial nucleosynthesis|url=https://www.worldscientific.com/doi/abs/10.1142/S0218301317410026|journal=International Journal of Modern Physics E|volume=26|issue=8|pages=1741002|doi=10.1142/S0218301317410026|arxiv=1707.01004|bibcode=2017IJMPE..2641002C|s2cid=119410875|issn=0218-3013}}</ref> 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 [[Radionuclide|radioactive isotopes]]. They are [[tritium]] and [[beryllium-7]]. == References == {{Reflist}} {{Cosmology topics}} {{physics-stub}} [[Category:Big Bang]] [[Category:Nuclear physics]]