Nucleosynthesis: the universe is now 1 minute old, and all the anti-matter has been destroyed by annihilation with matter the leftover matter is in the form of. Nucleosynthesis requires a high-speed collision, which can only be achieved with very high temperature the minimum temperature required for the fusion of hydrogen is 5 million degrees elements with more protons in.
How can the answer be improved. In astronomy – and astrophysics and cosmology – there are two main kinds of nucleosynthesis, big bang nucleosynthesis (bbn), and stellar nucleosynthesis. Nucleosynthesis is the process of creating new atomic nuclei from preexisting nucleons (protons and neutrons) the primordial preexisting nucleons were formed from the quark-gluon plasma of the big bang as it cooled below ten million degrees.
Nucleosynthesis, production on a cosmic scale of all the species of chemical elements from perhaps one or two simple types of atomic nuclei, a process that entails large-scale nuclear reactions including those in progress in the sun and other stars. Discussion big bang nucleosynthesis by the first millisecond, the universe had cooled to a few trillion kelvins (10 12 k) and quarks finally had the opportunity to.
Precisely which elements are involved in nucleosynthesis depends on the age and mass of the star the most prevalent reaction in smaller stars like our sun is the fusion of hydrogen into helium by the proton-proton chain in more massive stars this fusion occurs via the carbon cycle.