In the provision of the different theoretical framework concerning the universe origin, Big Bang theory says that the universe started with a small singularity, then expanded over billions of years to the present cosmos known today. It also elaborates that there is still expansion continuity. Various experimental evidences are in support of this theory which includes: first, an abundance of the elements, helium, and deuterium. In the early expansion, not even neutrons and protons could form due to hot temperatures and rapid collision of basic particles. Due to expansion, however, the cooling was induced thereby allowing neutrons and protons to form. The neutron and proton combinations led to the formation of deuterium, a stable element and finally to a very stable element helium (Will 2018).
Second, the cosmic background radiation discovery also offers strong support for the big bang theory. There was high universe density when objects were closer together caused by the dark matter. As the expansion took place, there was the interaction of matter and light that led to the fall of blackbody radiation due to longer wavelengths. This eventually shows the coldest molecular gas clouds in the galaxy due to absorption of light by cyanogen molecules.
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Third, the red-shifted light experiment again supports the big bang theory. Here, space expanded using the expansion factor. As a result, light emission from the sun reaches the galaxy later due to the expansion factor that increases the wavelength. The expansion factor equals one plus the red-shift. It is, therefore, the result of cosmic background radiation is in support of the hot universe before evolution.
According to Peebles (2015), Hubble’s law elucidates that the universe is in continuous expansion at a constant rate, evident by the red-shifts. The infinite or finite expansion depends on the open or closed universe respectively. In measuring velocity; Velocity= Hubble’s constant multiplied by distance. Consequently; Distance= Velocity divided by Hubble’s constant.
In the development of the universe has a clear connection with linear dependents in that the expansion vectors of the galaxies like velocity and distance rely on one another and each can be written in terms of the other.
References
Peebles, P. J. E. (2015). Physical cosmology . Princeton University Press.
Will, C. M. (2018). Theory and experiment in gravitational physics . Cambridge university press.