What is the Meaning & Definition of universe

The universe is the sum of everything that exists with their corresponding physical laws; This includes the time, space, matter, energy, etc. According to scientists, the universe has an approximate age of thirteen billion years and a visible of ninety-three billion light years extension.

For the moment, the "Big Bang" theory, postulated for the first time by Georges Lemaître, is the most widely accepted to account for the beginning of the universe. Explained in vague and concise manner, according to this theory the objects in the universe are separating continuously, so it had to be together ever. On this principle, the universe was a great temperature at the same time to a higher density. Then he started to lower temperature to its expansion unfolded. The idea of the Big Bang supposes that, if the elements were all together in a moment, a strong explosion separated them and turned into separate elements that make up the universe: planets, stars, black holes, meteors, satellites, etc.
While there is consensus in science about the beginning of the universe, the differences appear when it is on its final. Two possibilities that are usually shuffled are: a steady expansion or a contraction. In the first case, the speed with which the expansion of the universe is made would be reduced, but would remain constant; the density would be lower, already stars would not be created and the holes would disappear black; in terms of temperature, would decrease to reach absolute zero. In the second case, involving a contraction known as "Big Crunch", the universe will expand up to a maximum and then be retraería becoming more dense and warm, returning to a State like it did at its inception. However, both theories still not have been able to show accurately what processes to sustain this expansion or contraction, according to each one of them.
The man always has been curious to explore the space that surrounds it, and the same that led to Cristóbal Colón to sail into the open sea to find possible routes for the market of the Spanish Crown, is what also led to physical scientists to create instruments to observe the cosmos. Most recently, that same curiosity, led to agencies like NASA to launch rockets into space, even with humans aboard, to explore the lands of the Moon or other planets (they only shipped satellites at the moment). There is no doubt that, if so far man has been able to determine and characteristics with enough accuracy and formations of the own galaxy, in a few more years will continue with the study of increasingly distant spaces.
Despite all the proposals posed by science, the truth is that the universe is full of enigmas. One of them is its size, since this exceeds everything to be seen; Another is related to its shape, which may be flat or curved. These examples clearly demonstrate that speculations of science will continue its course, and we can lead to unforeseen analysis at first.
The vastness of the universe, and all those mysteries and secrets that even the man can not decrypting, but it makes effort to do so, it is object of study not only of physicists, astronomers and mathematicians, but also science minor as astrology, studying the stars in relation to people according to their birth, or disciplines as ashtanga yoga or other forms of meditation which raised body serenity but by mostly spiritual to achieve harmony and balance with the space that surrounds us, since we are part of the universe.
Article contributed by the team of collaborators.