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What does the Big Bang nucleosynthesis explain?
In physical cosmology, Big Bang nucleosynthesis (or primordial nucleosynthesis) refers to the production of nuclei other than H-1, the normal, light hydrogen, during the early phases of the universe, shortly after the Big Bang.
Why is it called Big Bang nucleosynthesis?
Nuclear physics in an expanding universe From about one second to a few minutes cosmic time, when the temperature has fallen below 10 billion Kelvin, the conditions are just right for protons and neutrons to combine and form certain species of atomic nuclei. This phase is called Big Bang Nucleosynthesis.
What are the characteristics of Big Bang nucleosynthesis?
There are two important characteristics of Big Bang nucleosynthesis (BBN): It lasted for only about seventeen minutes (during the period from 3 to about 20 minutes from the beginning of space expansion after that, the temperature and density of the universe fell below that which is required for nuclear fusion.
What are the product of the Big Bang nucleosynthesis?
Big Bang nucleosynthesis is thought to yield hydrogen-2, helium-3, helium-4, and lithium-7. It also would have produced hydrogen-3 and beryllium-7, but these would have decayed into more helium-3 and lithium-7. The most abundant product by far would have been helium-4.
What is an example of nucleosynthesis?
When a star is burning hydrogen in its core, it is a main-sequence star. In older stars such as the red giants, nucleosynthesis involves the burning of heavier elements created by earlier fusion; for example, helium may burn via the triple alpha process .
Where does nucleosynthesis occur?
stars
Stellar nucleosynthesis It occurs in stars during stellar evolution. It is responsible for the galactic abundances of elements from carbon to iron. Stars are thermonuclear furnaces in which H and He are fused into heavier nuclei by increasingly high temperatures as the composition of the core evolves.
What is nucleosynthesis reaction?
Nucleosynthesis is the process that creates new atomic nuclei from pre-existing nucleons (protons and neutrons) and nuclei. According to current theories, the first nuclei were formed a few minutes after the Big Bang, through nuclear reactions in a process called Big Bang nucleosynthesis.
What do you mean nucleosynthesis?
new atomic nuclei
Nucleosynthesis is the creation of new atomic nuclei, the centers of atoms that are made up of protons and neutrons. Nucleosynthesis first occurred within a few minutes of the Big Bang.
How is nucleosynthesis formed?
Nucleosynthesis is the creation of new atomic nuclei, the centers of atoms that are made up of protons and neutrons. Nucleosynthesis first occurred within a few minutes of the Big Bang. At that time, a quark-gluon plasma, a soup of particles known as quarks and gluons, condensed into protons and neutrons.
How does nucleosynthesis happen?
Is nucleosynthesis a chemical reaction?
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.
What is nucleosynthesis in chemistry?
What is the real Big Bang theory?
The big bang theory is real or not no one has answer for it as no one know. It is the most excepted theory thought out all which explains the biginning of space time.
What does the Big Bang theory do?
The big bang theory is an effort to explain what happened during and after that moment. According to the standard theory, our universe sprang into existence as “singularity” around 13.7 billion years ago.
What made the Big Bang possible?
Big bang thinking was made possible by an interpretation of the observation of red shift of light coming from distant galaxies. It was observed that the red shift was redder from more distant galaxies which triggered inflationary motion of space, that is, accelerating expansion.
What is Big Bang made up of?
-Big Bang lattice model, states that the universe at the moment of the Big Bang consists of an infinite lattice of fermions, which is smeared over the fundamental domain so it has rotational, translational and gauge symmetry. The symmetry is the largest symmetry possible and hence the lowest entropy of any state.