why is the Big Bang theory the most accepted theory about the origin of the universe?
Answers
“Big Bang” broadly refers to the theory of cosmic expansion and the hot early universe. However, sometimes even scientists will use the term to describe a moment in time—when everything was packed into a single point. The problem is that we don’t have either observations or theory that describes that moment, which is properly (if clumsily) called the “initial singularity.”
The initial singularity is the starting point for the universe we observe, but there might have been something that came before.
The difficulty is that the very hot early cosmos and the rapid expansion called “inflation” that likely happened right after the singularity wiped out most—if not all—of the information about any history that preceded the Big Bang. Physicists keep thinking of new ways to check for signs of an earlier universe, and though we haven’t seen any of them so far, we can’t rule it out yet.
Answer:
The Big Bang Theory proposes that the universe began as a single point, then expanded and stretched to become the size it is now. It is the most straightforward explanation for the origin of the universe, which scientists believe is still expanding.
Explanation:
According to the Big Bang theory, all current and past matter in the Universe came into existence at the same time, roughly 13.8 billion years ago. Singularity was created by compacting all matter into a very small ball with infinite density and intense heat. Singularity suddenly expanded, and the universe as we know it began. While this is not the only modern theory of how the Universe came to be, it is the most widely accepted and popular, along with the Steady State Theory and the Oscillating Universe Theory. The model not only explains the origin of all known matter, the laws of physics, and the large-scale structure of the Universe, but it also accounts for the Universe's expansion and astrophysical phenomena.
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