big bang1
The Big Bang Theory
By: lawrence
The Big Bang Theory It is always a mystery about how the universe began, whether if and
when it will end. Astronomers construct hypotheses called cosmological models that try to
find the answer. There are two types of models: Big Bang and Steady State. However,
through many observational evidences, the Big Bang theory can best explain the creation
of the universe. The Big Bang model postulates that about 15 to 20
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