Question

what is a big bang theory?​

Answer 1

Answer:

hey mate

here is your answer

Explanation:

one of the most persistently asked questions has been how was the universe created? there are many injection and theories on the beginning of the universe. but the most accepted so far is the bang bang theory. according to this the universe begin with a massive explosion a big bang about 14 billion years ago. at the point of this event all the matters and energy of space was contained at one pointo it was hotter and denser than anything we can imagine of. with this explosion the space was filled with particles Russian away from each other It kept spreading and growing at a fantastic rate. overtime particles got stuck together to form large bodies. this was how the celestial bodies came into being. the big bodies pulled the small ones due to the force of gravitation. the smaller bodies started revolving around the larger ones does many solar systems and galaxies are formed

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Answer 2

Answer:

The Big Bang theory was proposed to explain the origin of universe. According to this theory, the origin of universe took place due to a single huge explosion in the space due to which the various galaxies were formed in it.

Its various postulates were :

• The earth formed about 4.5 billion years back.
• There was no atmosphere on early earth.
• Water vapour, methane, carbon dioxide and ammonia were released from the molten mass which came out of earth due to volcanic eruptions.
• The UV rays broke up water into Hydrogen and Oxygen.
• The ozone layer formed from oxygen slowly
• Water vapour condensed fell down as rain, to fill the depressions and form oceans.