Big-Bang Theory regarding the origin of the universe was given by _____.

E. George Lamaitre

E. George Lamaitre

The Big Bang Theory regarding the origin of the universe was formulated by the Belgian physicist and Catholic priest Georges Lemaître. He proposed this theory in 1927, suggesting that the universe had a singular beginning from an extremely hot and dense state, and it has been expanding ever since. Georges Lemaître's idea was later supported and developed by other scientists, including Edwin Hubble, and it is now the prevailing cosmological model for the origin of the universe.