Answer :
The history of the universe can be divided into seven main phases. Together these phases constitute the cosmic evolutionary scheme that is continuous with them.
Starting with initial matter and energy,the universe progresses through particulate,galactic,stellar,planetary,chemical,biological,and cultural stages of evolution.In the scientific sense,the universe is a self-sufficient system and is determined by cosmic science law.Therefore, the universe can be divided into eight stages, like an abrupt episode during earth's evolution. The cosmic microwave background is the residual radiation from the hot Big Bang.Its temperature is extremely uniform throughout the sky. However,small variations or fluctuations in temperature at the parts per million level can offer great insight into the origin,evolution,and content of the universe.
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