Question

Which theory gives the best explanation regarding the origin of the universe?
A. Steady-State theory
B. Big Bang theory
C. Miller–Urey’s theory
D. Oparin and Haldane theory

Answer 1

The universe came into being during a period of inflation which was started about 14 million years ago. Like a rapidly expanding balloon, it had swelled from a size smaller than an electron to nearly its current size within a tiny fraction of a second and it is still expanding.

Complete Answer:
- According to the Steady-State Theory, the universe is believed to be expanding but maintaining a constant average density. This theory tells us about expansion of the universe but is not having any connection to the origin of the universe.
- Miller–Urey’s research and their corresponding expertise have helped us to know that life sustaining from organic molecules can be obtained from inorganic compounds as well. His area of research is hence not directly related to the evolution of the Universe.
- Alike Miller–Urey Experiment, we have seen the Oparin-Haldane hypothesis in order to prove that life originated from inorganic compounds and thus it does not seem to be directly related to the origin of the universe.
- Lastly, we can say that the Big Bang Theory is the correct answer here. This theory proposes the conditions in chronological manner which exemplifies the origin and evolution of the universe.

Additional information: There were several theories formed about the Origin and evolutions of the universe before the coming up of Big Bang theory. The foundation of this theory was laid by Edwin Hubble.

Note: The theories mentioned above generally talk about the origin of life and how the universe came into existence. The Big Bang theory is different from the rest as it is the only theory that has traced the circumstances which led to the origin of the universe and also has explained the present mechanism of the celestial bodies being found in the universe.