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Today, the consensus among scientists, astronomers and cosmologists is that the Universe as we know it was created in a massive explosion that not only created the majority of matter, but the physical laws that govern our ever-expanding cosmos. This is known as The Big Bang Theory.
The big bang theory is that our Universe began with an expansion of space (NOT an explosion of matter into space) that continues to this day at a rate that has remained fairlyâ¦ constant over the last 13 billion years or so.