Question

Explain the Big bang Theory.

Answer 1

The Big Bang Theory explains how the universe started.

This theory states that the universe began with a singularity or from an initial point which later inflated over approximately 13 billions of years to form the universe that we know today.

However, many theorists think that the Big Bang theory space was not the first theory of exponential expansion of space that cosmos has experienced but we live in the universe that goes through cycles of inflation and deflation.

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.