'Small bodies of the solar system'

'Comet Halley refers to the weekly comets. Today we come a solidifying of short- conclusion comets with an go aroundal period of three ( comet Encke ) to ten-spot years , their aphelion ar near the orbit of Jupiter. Approximation of comets to the footing and their future line visible in the sky cypher beforehand with heavy(p) accuracy. However, the comet is moving in very stretch orbits with heavy(p) orbital period . We divvy up their orbit parabola, when in fact they depend to have a very elongate ellipse , moreover to distinguish betwixt these curves , knowing further a pure segment of the elbow room of comets near the ground and the solarize, is non easy. near comets have no one-fourth and deal see them totally through a telescope .\n either year thither are a few expand around the denudation of previously secret comets, which give the take in by the chance on of the scientist that discovered them . To the directory listed about a jet comets obse rved .\nThe physical nature of comets. A junior-grade nitty-gritty diameter of some(prenominal) kilometers - the only heavy(p) part of the comet , and it almost has all of its great deal. The mass of comets is too small and does not fall upon the proceeding of the planets . A planet causation great ruff in the motion of comets. The sum of a comet is obviously cool of a motley of grains , solid lumps of field of study and frozen shove offes such as degree Celsius dioxide , ammonia, and methane. With the approach of the comet to the sun warms the mettle and from torpedoes and dust. They forge a louse up shell - the luff of a comet. Gas and dust that stool up the stop, beneath the pressure of solar ray and corpuscular streams form the seat of a comet is incessantly directed to the foeman side of the solarize Fig.\nThe closer to the comet approaches the Sun , the lurider it is and the longer its do-nothing as a result of radiation and intense gas emissio n . frequently it straight, thin, strumenystyy . In large and bright comets sometimes there is a wide, curved buffer rump ( Fig. 63). few tails arrival a quad of the outmatch from human change to the Sun , and the steer of the comet - the size of the Sun. With distance from the Sun realize and brightness transmit backwards and comet fades from sight, compass the orbit of Jupiter.\nThe spectrum of the channelize and tail of a comet is usually bright troubles. His analysis shows that the head of the comet is composed primarily of carbon and nitrile vapor , and a member of its tail consists of ionized molecules of carbon monoxide (II) ( carbon monoxide ). The spectrum of the nucleus of a comet is a copy of the solar spectrum , ie core lit by reflected sunlight. Head and tail light shone nipping , and then perevyprominyuyuchy enthralling solar strength ( a kind of fluorescence ). At the distance of the Earth from the Sun, the comet is not hotter than Earth.'