The Big Bang
The Big Bang is a complicated theory on the origin of the universe. The theory states that a small explosion went into a state of inflation that made the universe. Inflation is the extremely rapid exponential expansion of the early universe by a factor of at least 1078 in volume, driven by a negative-pressure vacuum energy density. Experts in the field believe it happened around thirteen billion years ago.The theory has not been completely proven yet. Four out of ten Americans believe in the Big Bang Theory. The number is growing more and more.
The Big Bang was like no explosion anyone might witness on Earth today. For instance, a hydrogen bomb explosion, whose center registers approximately 100 million degrees Celsius, moves through the air at about 300 meters per second. In contrast, cosmologists believe the Big Bang flung energy in all directions at the speed of light (300,000,000 meters per second, a hundred thousand times faster than the H-bomb) and estimate that the temperature of the entire universe was 1000 trillion degrees Celsius at just a small fraction of a second after the explosion. Even the cores of the hottest stars in today's universe are much cooler than that.
There's another important quality of the Big Bang that makes it unique. While an explosion of a man-made bomb expands through air, the Big Bang did not expand through anything. That's because there was no space to expand through at the beginning of time. Rather, physicists believe the Big Bang created and stretched space itself, expanding the universe. Another interesting fact is that people call it the “ The Big Bang “ meanwhile, it was actually an extremely small explosion.
There were so many people who contributed so much to the theory. The main person was George Lemaître who was a Belgian priest. Many people ignored his theory due to him having no proof. He was the first person to propose the theory of the expansion of the universe, widely misattributed to Edwin Hubble. Edwin Hubble was a major contributor but not the discoverer. He was also made what is now known as Hubble’s law and made the first estimation of what is now called the Hubble constant, which he published in 1927. Lemaître also proposed what became known as the Big Bang theory of the origin of the world.
In 1927, Hubble discovered that the distances to faraway galaxies were strongly correlated with their redshifts,an idea originally suggested by Lemaître in 1927. Hubble's observation was taken to indicate that all very distant galaxies and clusters have an apparent velocity directly away from our vantage point: the farther away, the higher the apparent velocity, regardless of direction. Assuming that we are not at the center of a giant explosion, the only remaining interpretation is that all observable regions of the universe are receding from each other.
Big Bang theorists claim that all of the galaxies, stars, and planets still retain the explosive motion of the moment of creation and are moving away from each other at great speed. This supposition came from an unusual finding about our neighboring galaxies. In 1929 astronomer Edwin Hubble, working at the Mount Wilson Observatory in California, announced that all of the galaxies he had observed were receding from us, and from each other, at speeds of up to several thousand miles per second.
In cosmology, the Steady State Theory is a not a suggested theory and model alternative to the Big Bang Theory of the universe's origin. Steady State shows, new matter is continuously created as the universe expands. While the steady state model enjoyed some popularity in the first half of the 20th century, it is now rejected by the vast majority of professional cosmologists and other scientists, as the observational evidence points to a Big Bang-type cosmology and an infinite age of the universe.
Quasi-steady state cosmology was proposed in 1993 by Fred Hoyle, Geoffrey Burbidge, and Jayant V. Narlikar as a new representation of the steady state ideas meant to explain additional features unaccounted for in the initial proposal. The theory suggests pockets of creation occurring over time within the universe, sometimes referred to as minibangs, mini-creation events, or little bangs. After the observation of an accelerating universe, further modifications of the idea were made.
While the scientific community was once divided between supporters of two different expanding universe theories—the Big Bang and the Steady State theory, observational confirmation of the Big Bang scenario came with the discovery of the cosmic microwave background radiation in 1964, and later when its spectrum was found to match that of thermal radiation from a black body. Since then, astrophysicists have incorporated observational and theoretical additions into the Big Bang Theory.
The Big Bang Theory cannot be proven through visual observation. Most people are aware that the light from an object three million light years away will take three million years to reach the Earth. In this way, scientists can ‘look’ back in time to see far into the history of our universe. This is limited, however, as at one point the universe was dark. Even the most powerful telescopes of the future will not be able to look into the first billion years of our universe.
The Big Bang Theory provides a viable solution to one of the most pressing questions of all time. It is important to understand, however, that the theory itself is constantly being revised. As more observations are made and more research conducted, the Big Bang Theory becomes more complete and our knowledge of the origins of the universe more substantial.
The Big Bang Theory is so important in the way the people think about the origin of the universe. Such information could be so useful and interesting in everyday life. In conclusion, The Big Bang Theory appears to be the most logical scientific explanation for the creation of the universe. There is no doubt that the universe had a beginning and that the formation of the world was a supernatural event. The endless ideas of how the Earth was created could very well now be over. The Big Bang is becoming more and more convincing to people due to the constant revision of the theory. It was once the ultimate mystery and now the evidence is showing more and more.
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As always - Shaffy