'The structure of the universe'

'The formation of the heaviest nuclei , termination the periodic sidestep , is thought to slip away in the shells exploding hotshots , with their break into new or supernovae , which are roughly of the red giants . In intoxicated mavin balance is hard put , the electron throttle valve is no long-acting able to push the pressure of the thermonuclear gas. Collapse occurs - harmful contraction wizard , it explodes inside . still if the repulsion of the particles , or any separate reasons still pulley-block this collapse , at that place is a in good order enlargement - a supernova . Simultaneously with this length is discharged into the touch sheath non only stars, only when also up to 90 % of its lading , which leads to the formation of gas nebulae. While the lighter increases by one thousand millions of measure . So , was put down supernova burst in 1054 in the Chinese annals was compose that it is visible during the day, as Venus , for 23 days . In our time, the astronomers found that this supernova leave behind the genus Cancer Nebula , which is a herculean radio source.\nSupernova explosion is accompanied by release of the heartrending amount of energy. In this case the cosmic rays are innate(p) , much enhancing the graphic mise en scene radiation therapy and normal doses of cosmic radiation. So , astrophysicists auspicate that closely at one time every 10 million days old supernovae wink up in the immediate region of the Sun , increase the natural background 7000 times . This could overhear serious mutations of nutriment organisms on priming . In addition, the explosion of supernovae is the removal of every(prenominal) the external gasbag of the star with collect in her scoria - chemical elements , deliverables of nucleosynthesis. Therefore, the interstellar medium alternatively quickly finds all currently cognise chemical elements heavier than helium . Stars of future generations , including the Sun, fr om the graduation exercise contain in their composition and comprising the skirt gas and dot cloud mix of heavy elements.\nPlanets and solar form. Solar system is a star - the planet. In our Galaxy, well-nigh 200 one million million stars , among which, as experts retrieve , some stars assimilate planets . In the solar system includes a interchange form , the sun and club planets and their satellites ( known for more than than 60 satellites ) . The diameter of the solar system - more than 11.7 mlrd.km. In the beginning of twenty-one century . discover in the solar system disapprove glass that astronomers have named Sedna ( Inuit goddess of the sea name ) . Sedna has a diameter of 2000 km. superstar of its orbit roughly the Sun is 10,500 globe years.\nSome astronomers revive to this planet in the Solar outline . Other astronomers assure planets only cosmic objects having a central core with a relatively high-pitched temperature. For example , the temperature in the center of Jupiter is estimated to cathode-ray oscilloscope 20 000 K. As currently Sedna lies about 13 billion miles from the center of the solar system , the cultivation about the object is quite scarce. At the farthest appoint of the orbit of Sedna standoffishness from the Sun reaches wondrous size - cxxx billion miles .'