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Scientist of Big Bang Theory?

Answer
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Answer: Georges Lemaître


Explanation:

Georges Lemaître was a Belgian Catholic priest, astronomer, and physicist who first proposed what we now call the Big Bang Theory. Born in 1894, he combined his deep understanding of mathematics and physics with his theological background to revolutionize our understanding of the universe's origins.


In 1927, Lemaître published his groundbreaking paper titled "A Homogeneous Universe of Constant Mass and Growing Radius." In this work, he proposed that the universe began from what he called the "primeval atom" - a single point of extremely dense matter that exploded and expanded to create everything we see today. This was years before Edwin Hubble's observations confirmed that the universe was indeed expanding.


Lemaître's theory was initially met with skepticism from the scientific community. Many scientists, including Albert Einstein, were uncomfortable with the idea of a universe with a definite beginning. Einstein even told Lemaître that while his mathematics were correct, his physics was "abominable." However, as more evidence accumulated supporting an expanding universe, Lemaître's ideas gained acceptance.


What makes Lemaître's contribution so remarkable is that he arrived at his conclusions through pure theoretical work, using Einstein's general theory of relativity as his foundation. He calculated that if the universe contained matter, it couldn't remain static - it had to be either expanding or contracting. When Hubble's observations in 1929 showed that distant galaxies were moving away from us, it provided the observational proof that Lemaître's theory needed.


The term "Big Bang" itself was actually coined later by British astronomer Fred Hoyle in 1949, somewhat mockingly, as he was a supporter of the competing "Steady State" theory. However, the name stuck, and today we recognize Lemaître as the true architect of this fundamental scientific principle that explains how our universe began approximately 13.8 billion years ago.


Lemaître's work laid the foundation for modern cosmology, and his insights continue to influence how we understand the universe today. He passed away in 1966, just two years after the discovery of cosmic microwave background radiation, which provided further confirmation of his theoretical predictions about the universe's origins.