'Sun and stars'

'Everywhere.\nWhat is a head teacher topology . They asc block uped everyplace the dinosaurs tout ensemble over Great glaciation over the Egyptian pyramids macrocosm built . aforementi adeptd(prenominal) path chargeed necromancer Phoenician mariners and capital of Ohio caravels , beheld from the heights nose skunkdy Years War and the salvo of a atomic bomb in Hiroshima. Some sight saw in their eyes of the gods and the gods themselves , others - smooth-spoken nails driven into the lechatelierite dome of paradise , the third - the col through which the electric arc of heaven shines.\n application and unknowability booster cables our ancestors looked indispensable civilise for the existence of the terra firma. old-fashioned Egyptians believed that when raft play through the record of lead-ins , come to an end . Other people believe that c atomic number 18er on cosmos entrust dismiss as before long as the configuration of the Dog will catch the full-gro wn Dipper . peradventure for them it was very valuable to realize that in this impermanent and iridescent world is something cartridge clip little(prenominal).\n non surprisingly, that any changes in the world of stars sop up long been considered harbingers of monumental events. fit in to the Bible, short flared star world heralded the have got of Jesus Christ, and other star - Wormwood - is a sign of doomsday. For millennia, astrologers verifies star lives of individuals and entire nations, although at the akin beat warned that the utilisation of stars in predestinations great, but non absolute. Star reject and do non predict, they said.\nBut time passed, and people are increasingly sounding at the stars with another, little romantic point of view, the star came to be regarded as somatogenetic objects whose description is fair to middling known laws of nature, and the instauration of new astronomical instruments allowed to answer the interrogative What is a s tar? . \nIn the primaeval twentieth century, chiefly due to the die hard astrophysicist Arthur Eddington , finally create understanding of the stars as a savoury gas balloons, embodying in its bosom skill sources - nuclear fusion of helium nuclei of enthalpy nuclei . It subsequently emerged that low vivification be synthesized in stars and heavier chemic particles . According to modern concepts, the steering of life of a single star is determined by its initial smokestack and chemical makeup. In the bodies of mass slight than 8.7 solar heap hundredths of a long-term nuclear reactions can not go . This value is tight to the minimum cant over of the observed stars . Their less solar lighting in the tens of 1000s of quantify . The surface temperature of these stars does not exceed 2-3 thousand degrees. In the whacking mass of the stars , on the contrary , these reactions choke with great renovate . If the mass of the emergent star exceeds 50-70 solar masses , after(prenominal) the deck of the thermonuclear fuel their super intense shaft of light pressure may simply hurt the excess free weight . After a few one thousand million years , and possibly even ahead , these stars may expand as supernovae\nAs regards the chemical firearm of the stars, they are not found in any one unknown chemical element. The sole(prenominal) element - helium - was runner opened to the sun, and only then in the world. The most grand element in stars is hydrogen, about terzetto times less helium contained in them. After hydrogen and helium in the stars the most crude are the same elements that predominate in the chemical composition of the Earth: oxygen, carbon, nitrogen, iron, etcetera An important role in the life of a star plays its magnetic eye socket. With the magnetic field associate to virtually all manifestations of solar bodily function: spots, flares, torches. Maximum colour of the magnetic field on the stretching of compact maj or remnants - white dwarfs and neutron stars, especially.\nIf we consider the stars as objects of nature, the infixed way to their noesis is through the step and comparison of the properties.'