Write an explanatory note on ' Big Bang theory ' .
Answers
Explanation:
The Big Bang is the name that scientists use for the most common theory of the universe, from the very early stages to the present day. The universe began as a very hot, small, and dense superforce (the mix of the four fundamental forces), with no stars, atoms, form, or structure (called a "singularity").
Answer:
Bing bang theory or the expanding universe theory explains the formation of the universe. According to this theory , the universe is still expanding i.e the distance between the galaxies is continuously increasing.
This theory contemplates that --
1. In the beginning the universe existed as a atom with unimaginably small size , infinite temperature and infinite density.
2.About 13 billion years ago, this atom exploded violently and led to the expansion.The expansion was rapid in first few minutes of the explosion and then slowed down.
3. As the universe grew , some energy got converted into matter.
4.After about the 300,000 years ,the temperature decreased to 4500k and thus the atomic matter was formed and the universe became transparent.
It is the most accepted theory in the formation of universe.