There are several Theories on the Origin of the Universe that seeks to explain the true events that happened during the beginning of time and space. Among those presented by scientists there are a few that stands out and became more popular. These are the theories that offers more scientific based evidence and those mainly accepted by more scientists and scientific community.
The Origin of the Universe - Theories and Evidence
1. The Big Bang Theory.
The Big Bang Theory states that the entire universe started with a very small, hot, and dense singularity. Based on the Big Bang, the Universe was formed billions of years ago, when the singularity suddenly expanded. Then the basic compositions of matter like H, He, D, Li and Be were formed through a process known as nucleosynthesis. Then more elements were formed which combined to form what the universe comprises today.
Watch videos on the Big Bang to have a clearer picture of its explanation :
Evidences of The Big Bang Theory
The Big Bang Theory also presented 3 very compelling evidences based on astronomic data :
1. The Cosmic Microwave Background
2. The Red Shift
3. The Relative Proportions of Matter in the Universe
( 24% of helium, 74% hydrogen, and 2% of other elements )
2. Steady State Theory.
The Steady State Theory proposes that the number of the galaxies in our Universe is not changing. The count has always been constant and the newer galaxies that forms are continuously filling up the empty spaces formed by galaxies or other heavenly bodies which became no more. The Steady State Theory states that the overall structure of the universe has always been same at any point in time and space. This structure of the universe was maintained even through certain events, like birth of new stars balanced by the death of old stars.
3. Pulsating Theory:
The Pulsating Theory make the assumption that the universe is continuously expanding and contracting. It proposes that the universe will keep expanding slowly then contract because of the action of gravitation. The contraction caused by gravity will occur until the universe becomes very compact causing it to explode and then expand again.
