What are the key stages of Big Bang model?

The temperature of the fireball drives the resulting mix of particles and radiation, and we can divide the Universe evolution into four stages; heavy particle era; light particle era; a radiation era and the present day era of matter. As the Universe expands its temperature and density decline.

What is the Big Bang model of the origin of the universe?

At its simplest, it says the universe as we know it started with an infinitely hot, infinitely dense singularity, then inflated — first at unimaginable speed, and then at a more measurable rate — over the next 13.8 billion years to the cosmos that we know today.

What are the three evidence for the Big Bang model?

The earliest and most direct observational evidence of the validity of the theory are the expansion of the universe according to Hubble’s law (as indicated by the redshifts of galaxies), discovery and measurement of the cosmic microwave background and the relative abundances of light elements produced by Big Bang …

Does the model support the Big Bang theory?

The Big Bang model is supported by three important observations: In particular, the abundances of helium (the total amount is much larger than could have been produced by stellar nucleosynthesis) and deuterium (stars can only destroy deuterium) strongly suggest their synthesis in the Big Bang.

What is the inflation model of the Big Bang?

Eternal inflation is a hypothetical inflationary universe model, which is itself an outgrowth or extension of the Big Bang theory. According to eternal inflation, the inflationary phase of the universe’s expansion lasts forever throughout most of the universe. Because the regions expand exponentially rapidly, most of the volume of the universe at any given time is inflating. Eternal inflation, therefore, produces a hypothetically infinite multiverse, in which only an insignificant fractal volume

What is an example of the Big Bang theory?

An example of the big bang theory is the accepted scientific theory that the universe started when a hot dense state expanded and exploded causing the universe to cool and start to convert energy into its current state. YourDictionary definition and usage example.

Does big Bang theory have a rating?

The Big Bang Theory 2020 rating PG in the United Kingdom and TV-14 in the United States and overseas. In addition, it is rated PG in Canada, PG in Australia, and 6 in Germany Other ratings include G in New Zealand, 12 in South Korea, 7 in Spain, and 16 in the Netherlands.

What is the Big Bang theory supported by?

The Big Bang theory is supported primarily by two major lines of evidence – first, the fact that all galaxies are rapidly moving away from each other (confirmed by Edwin Hubble in 1929), and secondly, the presence of the cosmic microwave background radiation, or the “echo” of the Big Bang.