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What Caused Inflation Big Bang

What Caused Inflation Big Bang

As we delve deeper into the concept of the universe, one term that surely comes up is "Big Bang". We know it as the event that marked the beginning of our universe as we know it. But, have you ever heard of "Big Bang inflation"? This phenomenon is what is believed to have occurred within a fraction of a second after the Big Bang. Let's explore this topic further.

What is Big Bang inflation?

Big Bang inflation is a theory that explains the sudden and rapid expansion of the universe in the moments following the Big Bang. It is believed to have happened within a quadrillionth of a second after the Big Bang, which occurred approximately 13.8 billion years ago.

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The theory of Big Bang inflation suggests that the universe underwent an exponential expansion in a very brief period that resulted in the universe being a much larger size than originally thought. This period of rapid expansion helped solve some of the mysteries and discrepancies that existed in the original Big Bang theory.

How was Big Bang inflation discovered?

The theory of Big Bang inflation was first proposed in 1980 by renowned cosmologist Alan Guth. His theory proposed that our universe underwent a period of inflation, which was responsible for the uniformity and flatness of our universe. He hypothesized that this rapid expansion would have created gravitational waves, which would have left a mark in the cosmic microwave background radiation (CMB) that still exists today.

Experimental evidence for Big Bang inflation finally arrived in 2014 when a team of astronomers led by John M. Kovac of the Harvard-Smithsonian Center for Astrophysics detected evidence of the cosmic gravitational waves in the CMB radiation. This discovery was one of the biggest scientific breakthroughs of our time.

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Why is Big Bang inflation important?

The significance of Big Bang inflation theory is vast. It helps to explain how the universe came into existence and the subsequent evolution of the universe. This theory also explains the uniformity of the universe that exists today. Without inflation, the universe as we know it might not have existed.

Moreover, the evidence provided by the discovery of cosmic gravitational waves helps to validate Einstein's general theory of relativity, which is the foundation of modern physics. This discovery opens up avenues for further research and scientific breakthroughs.


The concept of Big Bang inflation might be hard to understand for most of us, but it has certainly revolutionized our understanding of the universe. The theory has helped to bridge the gaps in our understanding of the universe and given us a glimpse into what happened during the very beginning of time.

The discovery of gravitational waves, the detection of which helped prove the existence of Big Bang inflation, is a testament to human intelligence and the work of brilliant scientists who dedicated their lives to unraveling the mysteries of the universe.

Who knows what other scientific discoveries Big Bang inflation theory will lead to. All we know is that it has opened a new chapter in the book of science and given us a deeper understanding of the universe and our place in it.