What is big – bang?
Recreating a Big Bang, which most scientists believe is the only explanation of an expanding universe, ought to show how stars and planets came together out of the primeval chaos that followed. Its essential feature is the emergence of the universe from a tiny speck about the size of a coin but in a state of extremely high temperature and density. British scientist Fred Hoyle coined the name Big Bang in 1949. According to the Big-Bang model, the universe expanded rapidly from a highly compressed primordial state, which resulted in a significant decrease in density and temperature.
