Our universe was created billions of years ago and no one is exactly sure of how. What will come of it in the future? Religions, beliefs, and scientists all have different perspectives of what will happen in the future to our earth and universe and they all have different views of how it all started. Once we know definitely how the earth was created, then we will find out most of the mysteries of the planets evolution. There are many different thoughts of what is to come of our earth and there are two major points that are debated upon when it comes to our future universe. Those would be the red and the blue shifts. The red shifts is when the universe will expand forever and the blue shift is when the universe will expand to a certain point and then start coming back in and eventually the matter will fall into a single point and there will be a "big crunch"-opposing the big bang. The universe started all at one point and will eventually all end at one point, but where?
The beginning of our universe is thought to have begun by either the big bang theory, the sun itself, from a companion star associated from the sun, or from a cloud of diffuse matter surrounding the sun. The big bang theory is that the universe expanded rapidly from the explosion of concentrated matter and energy. It has been expanding ever since. This caused a big decrease in density and temperature. The theory predicts that definite amounts of hydrogen, helium, and lithium were produced. About a million years later the earth was cool enough for atoms to form. That is when life forms began. That is said to be how the earth and most of our universe was formed.
In religious ways, people began because God created man and woman, and they reproduced to create the world as it is now. We are said to be all sons and daughters of Adam and Eve. The earth was supposed to be prefect but Adam and Eve had to disobey God and they were punished and now we all live in bad terms. That is another theory of how we got on earth and how the earth is like it is.
From the early Mesopotamians, about 4000 BC, they believed that the earth is the center of the universe and that the other heavenly bodies move around it. Some ancients, such as Aristotle, explained the nightly motion of stars across the sky. The Greek astronomer Ptolemy explained the stars' being fixed on rotating circles. The Greek astronomer Aristarchus said that the earth revolves around the sun in 270 BC. The Iroquois Indians of North America believed that a heavenly woman was tossed out of heaven, and fell upon a turtle, which turned into the earth. Nicolaus Copernicus described a system in which the planets revolved in circular orbits around the sun, which is the center of the universe. He recognized the rising and the setting of the stars to the rotation of the earth on its axis. In 1796 Laplace said that the universe started from a vast gas cloud, disk shaped and in slow rotation, and worked out an evolutionary sequence ending in a system composed of a central sun, planets and satellites. The German astronomer Johannes Kepler adopted the Copernican system and discovered that the planets move in an elliptical orbits all in different speeds. There were many different looks at how the earth was and where it was in relation to the sun and there still are some questions about it. With the tools they had then, it is really a wonder of how they came up with the conclusions of our universe. Although through all the different theory's, there still are many different ones that everyone thinks actually happened, there are many that are similar, with little differences, but there are also that could never have happened but people still believe them.
There are a lot of theories that people have said and I'm sure that there will be more to come. All these theories come from scientists, astronomers, and religions. The one that I believe in is the big bang theory. The big bang theory is the one...