Are you wondering how the Universe started? Do you think that god created the universe? Do you think that the universe was just there? There is one theory which is highly possible. Learn the theories of how the world started and ends.
Our universe is big, really big. Where does it all come from? What will be its end? Even though the beginning and ending of the universe is greatly disputed, there is one theory favored for the beginning: the Big Bang; and there are four theories for the end: the Big Crunch, the Big Chill, the Modified Big Chill, and the Big Rip. There is one theory that talks about a repeating cycle: the Big Bounce. The ending of the universe is harder to tell with the new discovery of “dark” energy, which is an opposite of gravity. “Dark” energy accelerates the growth of the universe. In fact, two of the four theories for the ending of the universe have some mention of the “dark” energy in them.
There is all this matter in the universe. People are here, on this little planet Earth. Where did it all come from? Was there an explosion at the beginning or was it always here? There is one theory that is almost unanimously considered the best theory for the beginning of the universe: the Big Bang theory. The Big Bang involves an explosion that began the entire universe and time. Its standards are the only ones that match up with the current state of the universe. The original theory had to be tweaked because it predicted an irregular form of the universe; not a spread-out, uniform universe that we know today. The period of inflation solved this question. Inflation was when the universe grew in “a brief form of expansion in the first instant of creation, during which the universe grew from the size of a small atom to bigger than the size of the galaxy.” Ian Ridpath, the author of Eyewitness Companions: Astronomy, says,” The Big Bang was not an explosion in the conventional sense- it was the explosion of space itself, and the beginning of time.” The Big Bang happened when there was no space or time. There is no possible way to explain what came “before” the Big Bang, since space and time did not exist, according to the theory. The Big Bang was the opposite of a star blowing up in a supernova. A supernova explodes and becomes a singularity, which is infinite mass or energy on one point in space-time, or space and time mixed. The Big Bang started as a singularity, and then blew up. The force of the Big Bang still radiates through the air as cosmic background microwave radiation. The discovery of cosmic background microwave radiation by Arno Penzias and Robert Woodrow Wilson was decisive factor in the fight over the beginning of the universe. Why would there be a radiation throughout the sky, spread uniformly, without having an explosion at the beginning of the universe?
Of course, scientists have very imaginative minds, and questioned the Big Bang. How was all the matter in one place first of all? Then the scientists came up with the Big Bounce theory. It is the only theory that may oppose to the Big Bang. The Big Bounce involves the Big Bang and the Big Crunch. The Big Bang theory involves zero volume and infinite energy when it was a singularity. This, technically, means the end of physics, which means that the universe could not have been made. Scientists say that that’s where quantum mechanics comes in. A study in quantum mechanics proved that a universe could have ended, not with a singularity, but to a point where the effects on gravity become so strong that they go the opposite direction, repel, causing an explosion again. This led to the theory of the Big Bounce, which involves the Big Bang and the Big Crunch over and over again. We could be the first universe or the two billionth universe for all we know. Scientists have found that “dark” energy is speeding up the growth of the universe, so a Big Crunch could not happen. Scientists are saying that maybe we are the last universe and our Big Bang happened after the last Big Crunch, and we will end with another possibility.
Obviously, there are other theories for the end of the universe. Each one of these has been based on the observations of the universe. Though one of these theories has been proved wrong by the recent observations of the universe, the other three came after the discovery of “dark” energy. One of the theories is the Big Crunch. It involves the fact that constant of gravity will soon overpower the cosmic background microwave radiation and the constant of the growing universe and pull it all back together again. This theory has been proved wrong by the force of “dark” energy. Another theory is the Big Rip. This theory guesses that the force of dark energy will just be too much for the fundamental forces of the universe and the forces between subatomic particles, such as quarks and gluons. The entire universe would be ripped up in a huge “Big Rip”. A third theory is the Big Chill. The Big Chill involves the fact that the matter in the universe is to small for gravity to slow down and the universe continues to expand, but more and more slowly, until the universe just stops completely. Gravities fall apart, stars turn dark, and atoms return to their components. The fourth and final theory is the Modified Big Chill. The Modified Big Chill says that “dark” energy would expand the universe faster and faster, overcoming the force of gravity. Galaxies and stars would spread away form each other. The universe’s ultimate fate, though, would still be a Big Chill.
As you can see, the beginning and ending of the universe is greatly disputed. There is one theory that is heavily favored for the beginning of the universe: the Big Bang theory. There are four theories for the end of the universe: the Big Crunch, the Big Chill, the Big Rip, and the Modified Big Chill. The discovery of “dark” energy, which is an opposite of gravity, has made the future of the universe even cloudier. In fact, two of the four theories mention “dark” energy. Scientists are still studying the universe to see if any clue will be an answer to the mystery of the beginning and ending of the universe.