The universe consists of space-time and time as well as their contents, which include celestial bodies, celestial stars, planets, stars, and all other types of matter and energy. The Big Bang theory is a modern cosmological model which is used to explain the origins of the universe. It also explains the existence of a great number of alternate earth-like planets in the universe, including the human race.
According to this cosmology, there was a sudden explosion of particles and radiation in the universe at a rate of about one second per second, which is referred to as the “bang.” This phenomenon is also referred to as the “super explosion” and was first predicted by quantum mechanics some half a century before Einstein came up with his theory of relativity. Einstein’s theory of relativity further modified the idea of the universe and explained why it had such high speed rates. According to the big bang theory, the universe was created four billion years ago through a process of nuclear fission and fusion.
After this, smaller stars and white holes formed and then eventually merged together to form a singularity. This is why, when astronomers look at the universe, they find that it appears to be flat with no internal structure. Another model of the universe which is currently gaining popularity is called String Theory, which suggests that different forces govern the evolution of space-time. These forces could be described as being similar to the strong and weak nuclear forces that are found in the body to which a star belongs. The big bang model and String theory are currently being jointly worked upon by NASA and Indian institute of research.