The past and future of the universe



universe, according to current cosmological theories, there was nearly 14 billion years after the Big Bang.It is believed that prior to this major event marked the beginning of time and space, the world existed in a particular state, the details of which scientists are not yet able to recover.The basic material for the study of the first period of the universe - the so-called cosmic microwave background radiation, which can be considered a "replica" of the explosion of matter.

origin of the universe remains one of the mysteries on which work representatives of science.But even more difficult to foreca
st the development of the material world in the long term.Researchers have put forward different hypotheses about the future of the universe, with each model has its own deadlines for its existence.

Yet most scientists are inclined to believe that the universe may exist for at least another 28-30 billion years.There are those who push this boundary is much further into the future.Deadlines for the existence of the world at the same time are determined by the physical concept, in which projections are conducted, as well as ideas about the stages of development of material objects.

model for the future development of the universe



In drawing up models for the future development of the universe, researchers use so-called "closed" and "open" development model.Proponents of the "closed" concept believe that in the distant future, the current expansion of space will inevitably be replaced by a compression phase.It is expected that this process will unfold in the universe after 20-25 billion years.Within this concept, the world is a closed system in which there is an alternation of expansion and contraction cycles.

A different look at the development of cosmological models of the universe, built on "open" type.It is expected that billions of years stars scattered across the space of the cosmos, will gradually start to cool down, which subsequently lead to the inevitable heat death of the universe.The planets descend from their orbits, and the stars will leave the galaxy, turning into a "black dwarf."In the central regions of galaxies would occur "black holes".

What will eventually lead the development of matter, can not yet predict the adherents of any of the two main cosmological models.It is possible that the universe goes in a completely different state, in which radically changed the physical constants.It is possible that by tens of billions of years, the usual attributes of matter, space and time, will also undergo changes.