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Big Bang Theory

There are perhaps few people who have not heard of the Big Bang theory, the scientific model that describes the initial genesis of the universe. Under this theory, there was massive explosion 13.8 billion years ago, with the universe expanding and cooling from that point to its present state. Big Bang TheoryScientist Georges Lemaitre first proposed in 1927 that an expanding universe could be traced back to an original starting point, the first notion of the Big Bang theory.

American astronomer Edwin Hubble was the first to discover that the universe was expanding, in 1929. In 1964, the discovery of cosmic microwave background radiation proved the fact of the expanding universe, giving weight to the Big Bang theory. However, the actual state of the universe at the moment of the Big Bang remains unknown. Scientists do know that the universe began to expand exponentially with seconds. As it expanded, it decreased in density and temperature. Atomic nuclei formed within three minutes, but thousands of years passed before there were electrically neutral atoms.

British astronomer Fred Hoyle is credited with coining the term “Big Bang” in 1949. Outside of scientific circles, the idea of the Big Bang theory raises philosophical questions, specifically whether the scientific fact of the universe’s origin supports or refutes the idea of a Creator. Regardless, the universe is in no danger of collapsing for billions more years.

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