Concept:
Cosmology attempts to explain the origin and development of the universe. The Big Bang theory is the prevailing scientific model for the origin of the observable universe.
Step 1: Distinguishing the contributors to the theory.
While Edwin Hubble provided observational evidence that the universe is expanding, the theoretical proposal of the universe starting from a single point was developed by someone else.
Step 2: Identifying the proposer.
Georges Lemaître, a Belgian priest and physicist, was the first to propose that the universe began from the expansion of a "primeval atom," which is the foundation of the Big Bang theory.
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Proposer of Big Bang Theory = Georges Lemaître
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Georges Lemaître
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