What are nucleosynthesis?

  • (noun): (astronomy) the cosmic synthesis of atoms more complex than the hydrogen atom.


Nucleosynthesis is the process of creating new atomic nuclei from pre-existing nucleons (protons and neutrons). The first nuclei were formed about three minutes after the Big Bang, through the process called Big Bang nucleosynthesis, which formed the hydrogen and helium content of the first stars, and is responsible for the general hydrogen/helium ratio of the universe today. In space, cosmic ray spallation is also a significant source of specific nuclei (9Be and 10,11B) that are not created by stellar nucleosynthesis.

Read more about Nucleosynthesis.

Some articles on nucleosynthesis:

Nucleosynthesis - Minor Mechanisms and Processes
... These mechanisms include Radioactive decay leading to specific radiogenic daughter nuclides ... The nuclear decay of many long-lived primordial isotopes, especially uranium-235, uranium-238, and thorium-232 produce many intermediate daughter nuclides, some of them quite short-lived, before finally decaying to isotopes of lead ...
B2FH Paper
... to hundreds of observations by astronomers about nucleosynthesis issues, it drew the world of astronomy into nucleosynthesis in stars in a way that Hoyle's prior work had ... This is the most important part of nucleosynthesis, but B2FH had formulated it poorly, trying to pass it off as their ill-conceived alpha process ... See explosive nucleosynthesis section of nucleosynthesis ...
Timeline Of The Big Bang - Early Universe - Photon Epoch - Nucleosynthesis
... Nucleosynthesis only lasts for about seventeen minutes, since the temperature and density of the universe has fallen to the point where nuclear fusion cannot continue ...
Copernicium - Nucleosynthesis - Decay Products
... For example, in May 2006, the Dubna team (JINR) identified copernicium-282 as a final product in the decay of ununoctium via the alpha decay sequence ... It was found that the final nucleus undergoes spontaneous fission ...