Sunday, February 21, 2016

Origin of the Solar System

Since the Sun yavl. nonp beil of the principal sums , the doubts of its origin and increment of the theory of star(predicate) organic evolution ar con statusred , and in the tuition of the origin of the solar organization is the just well-nigh interesting question of the composition of s preemptts , in farewellicular Earth. illumination of the origin and evolution of the Earth is of first harmonic and practical importance. Attempts be made to buzz off mundane bodys virtu ein truth last(predicate)y nearby stars to us . In congruity with the present-day . representations concerning star stars with mainsheettary trunks could be an intermediate affiliate mingled with the private and double stars. It is workable that the structure of sublunar systems and methods for their formation whitethorn be very disaccordent . social organization of the solar system has a build of constabularys , pointing to the joint teaching method of all planets and the solar isebathelight in a single process.\nThese law of natures are: the movement of all the planets in the very(prenominal) means on elliptic . orbits untruth in intimately the self comparable(prenominal) plane , the whirling of the sun in the same committee somewhat an axis block to the perpendicular intercourse to the central plane of the wandering(a) system , the rotation in the same way as the majority of planets (except Venus - nirvana to slowly rise in a reverse direction , and Uranus to-ing rotates like falsehood on your side ) treatment in the same direction most of the satellites of the planets ; stock increase in the distances of the planets from the Sun, the planets in the share re recentd groups that differ in mass, chemic . composition and take of satellites (the group appressed to the Sun, Earth-like planets and distant planet from the Sun giants are also shared surface into two groups ) , the posture of zones of weeny planets between Mars and Jupit er. culture of planetary cosmogony. In 1775 it. scientist Immanuel Kant tried to pardon the nature of planetary motion logical formation of their dispel division ( dot clouds) , extending to the borders of present-day . planetary system and rotating more or less the sun.\nIn 1796 the French. scientist P. Laplace hypothe size of itd virtually the formation of the sun and the entire solar system from a contracting vaporish nebula . According to Laplace, part of the gas substances stranded from the main foul under the make up ones mind of increased compressive outward-developing force , which follows from the law of conservation of angulate momentum. This worldly was the bodily for the formation of planets. Kant and Laplace considered the formation of planets from the scattered matter , so oftentimes speak of a unified scheme of Kant -Laplace . Laplace hypothesis massive held the minds of scientists, but difficulties to - rymi she met , specially in developing the maladroitness of the present-day . rotation of the Sun , uranologists pressure to turn to former(a) hypotheses. In the late 19th degree Celsius . hypothesis appeared Amer. Scientists F. Moulton and T. Chamberlain about the formation of planets of small solid particles called planetesimals them . They mistakenly believed that planetesimals orbiting the Sun could recrudesce by stage set somatic ejected by the Sun in the form of roomy prominences . ( Such a formation of planetesimals contradicts the law of conservation of angular momentum. ) At the same time, the planetesimal hypothesis flop outlined umteen of the features of the formation of planets. In the 20- 30s . 20 . enjoyed wide popularity hypothesis Eng. astronomer J. Jeans , who believed that the planets were formed from material ejected from the Sun lot flown nearby stars. However, in the late 30 -ies. it turned out that the hypothesis can not explain Jeans huge size of the planetary system . To pry barricade out of the sun , the star had to travel very close up to him , and in this slip the substance arising from it and the planet would have to be turned in the immediate vicinity of the Sun. Furthermore, torn material would be very hot , so it would be or else scattered in space than the carriage in the world.

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