List and explain 3 things that supports the Big bang theory make it 2 paragraph
1) Cosmic Microwave Background Radiation: One of the key pieces of evidence supporting the Big Bang theory is the presence of cosmic microwave background radiation (CMBR). In 1964, Arno Penzias and Robert Wilson discovered a faint background radio noise while conducting research. This noise turned out to be CMBR, which is believed to be the afterglow of the intense heat of the early universe, about 380,000 years after the Big Bang. The CMBR is a form of radiation that uniformly permeates throughout the universe and has been measured to be at a temperature of about 2.73 Kelvin. Its existence and characteristics are consistent with the predictions of the Big Bang theory, providing strong supporting evidence.
2) Redshift and Hubble's Law: Another important piece of evidence for the Big Bang theory is the observation of redshift in distant galaxies and Hubble's Law. Edwin Hubble discovered in the 1920s that galaxies are moving away from one another, and that the farther away a galaxy is, the faster it is moving away. This observation led to the formulation of Hubble's Law, which states that the velocity at which a galaxy is receding from us is directly proportional to its distance from us. The redshift observed in the light from distant galaxies is a result of the stretching of light waves as they travel through expanding space. Hubble's Law and the redshift of distant galaxies provide strong evidence that the universe is expanding, which is a key component of the Big Bang theory.
3) Abundance of Light Elements: The relative abundance of light elements in the universe is another crucial piece of evidence supporting the Big Bang theory. According to the theory, the intense heat of the early universe enabled the formation of light elements such as hydrogen and helium through nucleosynthesis. Observational data gathered from studying the composition of the universe shows that the abundance of light elements matches the predictions made by the Big Bang theory. The observed ratio of hydrogen to helium matches the ratio calculated from the theory's predictions, further strengthening the argument for the validity of the Big Bang theory.
In summary, the presence of cosmic microwave background radiation, the observation of redshift in distant galaxies along with Hubble's Law, and the relative abundance of light elements in the universe are three crucial pieces of evidence that support the Big Bang theory. These observations are largely consistent with the predictions made by the theory, providing substantial support for our current understanding of the origins and evolution of the universe.