The Big Bang theory is the prevailing cosmological model for the universe from the earliest
known periods through its subsequent large-scale evolution. In 1912 Vesto Slipher measured the first Doppler shift of a "spiral
nebula" and soon discovered that almost all such nebulae were
receding from Earth. Based on the picture, scientist was found lot of
discovery about that. This theory holds that the universe was derived from
super dense and hot conditions. Scientists also believe that the Big Bang forms
the solar system. Based on theory and also picture, universe has been expanded
since 13,7 billion years. There are two factor that affect expansion of universe,
energy that obstruct expansion, and energy that accelerates the expansion is
termed "dark energy". Dark energy also helps to explain two
geometrical measures of the overall curvature of the universe. The other side,the
Dark Ages were currently thought to have lasted between 150 million to 800
million years after the Big Bang. and Quantum Fluctuations can produce matter
and energy out of nothingness. And this can lead to very big things. The thing
that related to Quantum Fluctuations is inflation. inflation is a theory of
exponential expansion of space in the early universe. The inflationary epoch
lasted from 10−36 seconds after the Big Bang. Inflation was developed in the
early 1980s. It explains the origin of the large-scale structure of the cosmos.
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