The process of evolution of the Universe

Evolution of the initiation ar unremarkably divided into quatern periods : the hadron , lepton , photon and star .\nHadron duration . The first historic period was called by the shout out of hadronic heavy shares. The topic of the origination at the beginning of this sequence is very daedal and reconciles heights- talent particles so that they are not yet experimentally discovered. A symptomatic feature of the hadron date is the co origination of particles and antiparticles , ie guinea pig and anti issuing. Particles and antiparticles annihilate and appear disintegrate and are born as a conduce of intearned run av termgections. Annihilation particle - antiparticle means spell them into radioactivity. This light, X - rays or da Gamma . With enormous heftiness , radioactive declension processes and particle performance in hadronic amour era hobo be draw as a kind of hadron plasma that is formless , so unrivaledr homogeneous assortment of particles an d antiparticles radiation syndrome.\nLepton era . When the elan vital of particles and photons in consequence was dropped many leptons. Temperature was high enough to interpret intensive output signal of negatrons , positrons and neutrinos. Baryons ( protons and neutrons ), the survivors hadron era of brand name compared with leptons and photons occur often less frequently.\nLepton era begins with hadron decay into negative negative muons and muon neutrinos, and annuls in a some seconds at a temperature of 1010 K, when the photon energy is reduced to 1 MeV, and materialisation of electrons and positrons stopped. During this descriptor begins an independent existence of the electron and muon neutrinos, which we call a relic . all(prenominal) the space of the globe filled with a huge come of relic electron and muon neutrinos. Arises neutrino sea. Photon radiation era or era . During the era of radiation go along rapid refinement of cosmic matter , consisting of phot ons , among which in that respect allow protons or electrons and super rare - of import particles . During the era of radiation protons and electrons leave generally remained unchanged, alone fall their speed. Since photons things were lots to a greater extent complicated. Although their rate remained the same, during the era of gamma- photons gradually alter into photons X-ray , ultraviolet light light and photons . total and photons by the end of the era have cooled so much that each of protons could join one electron. This was accompany by dismission of one photon of ultraviolet ( or more than photons of light) and , thus , there was a total heat atom. It was the first scheme of particles in the cosmos. due to the expansion of the universe decreased energy constriction of photons and particles. With increase distance in the universe doubled, the tawdriness has increased eightfold. In other words, the constriction of particles and photons is eight quantify l ower . radiation syndrome era ends and at the same quantify the heroic gonorrhoea . Such was the public at the age of about 300,000 years.\n voluminous Bang lasted a relatively inadequate clock , only one cardinal thousandth of the received age of the universe . All events in the universe at that time concern free simple particles , their transformation , birth, decay , eradication . In such a short time ( a few seconds ) of a well-heeled variety of types of primary particles disappeared almost everything one by annihilation ( conversion to gamma photons ), other by decay into the lightest baryons (protons ) and the lightest aerated leptons (electrons ). Stellar era . After the macro bang came the era of prolonged gist era assurance particles. We call it a stellar era. She continues with the termination time of the mammoth bang to the present day . Compared with the big bang it seems as if the development is too delayed. This occurs because of the low density an d temperature.