The big bang by on prezi gas prices going up or down


The Big Bang theory is the prevailing cosmological model for the universe from the earliest known periods through its subsequent large-scale evolution. The model describes how the universe expanded from a very high-density and high-temperature state, and offers a comprehensive explanation for a broad range of phenomena, including the abundance of light elements, the cosmic microwave background (CMB), large scale structure and Hubble’s law.

At the time of the Big Bang the 4 fundamental forces of nature: gravitation, strong force, electromagnetism, weak force formed a single force, the "super force", which as the universe expands are separated from each other. Then appear the protons and neutrons that make up the nuclei of hydrogen, deuterium, helium and lithium. As the cooling of the universe continues, the electrons join the atomic nuclei and form the neutral atoms. Subsequently, the radiation and matter that cover everything the universe separates, what is defined as the decoupling. Then appear galaxies, stars and planets.

It can be estimated that before the galaxies were formed, the density of matter in the universe would have been infinite or extremely large; therefore, the analysis of the universe can begin a moment after the Big Bang, in which the density is now finite, although extraordinarily enormous Something similar can be said with respect to temperature.

In the regions of higher temperature, the matter that later gave rise to the galaxies and later to the stars accumulated. You can analyze the physical processes that developed after the Big Bang from the time of 10-43 sec. after the beginning of the universe.

In 1964, US radio astronomers Arno Penzias and Robert Woodrow Wilson rediscovered the CMB, estimating its temperature as 3.5 K, as they experimented with the Holmdel Horn Antenna.[2] The new measurements were accepted as important evidence for a hot early Universe (big bang theory) and as evidence against the rival steady state theory.[3] In 1978, Penzias and Wilson were awarded the Nobel Prize for Physics for their joint measurement.

 That radiation predicted by G.Gamow in 1948 is known as cosmic background radiation and is supposed to have been generated when the radiation of matter was decoupled from the universe. It had an age of about 300,000 years and a temperature of about 3000 K. At that time I still do not know they had formed neither the galaxies nor the stars nor the planets.

A characteristic of this radiation is that it is distributed evenly throughout the sky, without any preferential direction being noticed; By the way, it is one of the convincing evidence that the Big Bang really happened was the detection of that background radiation encompassed all the space. The study of this radiation allows us to obtain information about the conditions of the universe in its beginnings; For example, the COBE satellite found in 1992, tenuous temperature fluctuations in background radiation, which have also been interpreted as confirmation that the Big Bang existed. These fluctuations in radiation indicate variations in the density of matter.