what is big bang theory
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About 15 billion's year ago there was violent exlposion called big bang theory it started a process that lead to creation of unviverse.The big bang was am explosion of an extremely hot ball of matter that was smaller than an atom.This exlosion or big bang started the process of expansion and changed which continues till today.Within min of the exlosion ,atomic particles came together to make the gases (he) helium and H which over of millions of year produced the galxies the stars and the unverse we know today ;)
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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.
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