Physical science

Big bang theory - this rapid expansion cause the universe to cool down and become less tense forming new particles

NUCLEOSYNTHESIS -Protons and neutrons began forming shortly after from about 10 to 6 to 1 second after the big bang within about 3 minutes after the big bang condition cooled enough to these protons and neutrons to form hydrogen nuclei this is called the era of nucleosynthesis

Deuterium - to create light elements and produce gamma rays Combination of protons and neutrons produce deuterium nuclei and gamma rays combined together to produce helium

Nuclear fusion  - the energy and temperature of the universe are extremely high to cause the neutrons and protons to combine and the firm certain species of atomic nuclei in a process by which nuclei fused together to form a heavier nuclei

Light elements - (hydrogen helium lithium beryllium)

Isotopes - formed of elements that has the same atomic number of the original element but with a different atomic must number

Are atoms of the same element that have the same atomic number one different mass number a

Supernova - massive explosion of star

Quarks and electron - these are particles that were formed after the universe began to cool down

Neutron star merger - it is the process wherein heavier elements neutrons star are created by the addition of more neutrons to existing nuclei instead of fusion of light nuclei

Proton- positive 

neutron-neutral 

electron- negative

Stellar nucleosynthesis -process by which elements are created within stars by combining together the proton and neutron from the nuclei of lighter elements