What scientist contributed in the big bang theory?

Answer 1

Friedmann Theory - Alexander Alexandrovich Friedmann is best known for his pioneering theory that the universe was expanding, governed by a set of equations he developed from Albert Einstein's equations of general relativity, showing that the Universe might be expanding in contrast to the static Universe model advocated by Einstein at that time. From these equations he postulated three Friedmann models describing positive, zero and negative curvature respectively. This dynamic cosmological model of general relativity would come to form the standard for both the Big Bang and Steady State theories.

However it was Georges Lemaître, a Belgian physicist and Roman Catholic priest, who, in 1927, independently used Friedmann's equations to propose that the inferred recession of the spiral nebulae (per Edwin Hubble's discovery of 1924) was due to the expansion of the Universe. As such, the Jesuit priest Georges LeMaitre was credited with being the first to mathematically detail a cosmological study now known as the Big Bang.

Answer 2

The first scientist to develop this cosmology was Jesuit priest Georges LeMaitre. George Gamow later refined and defended this idea, along with Ralph Alpher and Robert Herman. In 1964, Arno Penzias and Robert Wilson serendiptiously discovered microwave background radiation, and found it to be almost exactly as predicted by the latter three. Since then, almost no serious cosmologists have denied the fact of Big Bang Cosmology.

Many other later worked on this subject, of course. Hawkings would be one.

Answer 3

Jesuit priest George LeMaitre first developed this model for what our Universe is doing at this time. Albert Einstein initially ridiculed the idea, but later acknowledged that the priest had corrected (as Einstein himself called it) his "greatest blunder."

Answer 4

Georges Henri Lemaitre