Looking at the star sky, sometimes it is possible to think of how the Universe appeared. There are several theories of its origin, and any of them is still not recognized as reliable.
Instruction
1. According to the Theory of the Big Bang, the energy and matter making everything real in the Universe once were long ago in a singular state. They had the infinite pressure, density and temperature. It excluded effect of physical laws. Everything what the Universe at the moment consists of, was in one small particle, but its state became unstable over time therefore there was a Big Bang.
2. Initially this theory carried the name "dynamic evolving model", and the modern term was given it only in 1949 after work of the famous scientist Hoyle was published. Scientists put forward even several proofs confirming the probability of this theory. One of them is existence of the relic radiation caused by the Big Bang.
3. According to the theory of the Big rebound, emergence of the Universe happened differently. Before there was absolutely other Universe which had the maximum pressure compressed in the minimum volume. It was resulted by the Big rebound which formed further the real Universe which gradually began to extend. In a basis of the next model of origin of the Universe the theory of loopback quantum gravitation is put. She says that the space and time consist of separate parts or the smallest quantum cells. On small space they create separate structure, and on big - give rise to smooth time space. The extreme birth of the new Universe forced quantum cells to separate from each other. Because of it there was also a Big rebound.
4. The string theory and the M-theory say that from time to time the Universe has ability to replicate. Some scientists consider that the Universe was given rise as a result of quantum fluctuations in previous. From there is a probability that the modern Universe can quite undergo similar fluctuations at any time and in any place again that again will lead to its independent reproduction in other look.
5. According to creationism, the Universe was created by the Creator or God. Supporters of this theory are sure that in the Bible the process of its emergence is absolutely precisely described. According to creationists, the Universe and the whole world it was created only 6 days. Some people claim that there was it about 6 thousand years ago, and others that creation of the Universe happened 7.5 thousand years ago.