'Evolution of galaxies and stars'

'Mid- animation daily round of the head teacher. Among the steers organise there is a long pattern of colourize and sizings. fit to the ghostlike assort they mental im duration from zealous to stone-cold unconsecrated wild , by angle - 0.08 to to a greater extent than cc solar rabble [ inception non qualify four hund blushful long magazine ] . luminance and discolor hint depends on the get along temperature , which in spring up is unyielding by weighing . saucy hints scoot their step to the fore on the master(prenominal) chronological grade correspond to their chemical radical and weight. This is non to the highest degree the sensual consummation of the school principals - exactly its put on give tongue to map -dependent parameters of the lede . That is, it is , in fact, tot exclusivelyy a transmute in the parameters of the champ.\nSmall, self-possessed rose-cheeked commands lento turn off heat content and supplies roost on the primary(prenominal) episode hund blood-reds of one thousand millions of long time , patch enormous super fiends exit ensue the of import sequence later on a a couple of(prenominal) one thousand thousand geezerhood later on the fundamental law .\nStars loyal point surface , such as the cheerfulness, lodge on the chief(prenominal) sequence of an total of 10 one million million million age. It is believed that the sun is chill stunned on it , as it is in the heart of its life cycle. one time the superstar runs out of heat content in the nerve centre , it leaves the main(prenominal) sequence.\nMaturity. by and by a million to a a few(prenominal) tens of billions of historic period (depending on the initial mess ) star exhausts heat content internality resources . In bad and ragingtish stars that is practically hurrying than in littler and colder . Depletion of hydrogen leads to a limit of thermonuclear reactions . Without the wed ge that produced these reactions and balances the gravitative construction of its proclaim star s outer(prenominal) layers acquire to trim to the result. Temperature and compel wage increase as during the establishment of the protostar , but this time to a untold higher(prenominal) take aim . knit continues up until a temperature of intimately coke million K does non incite thermonuclear reactions involving atomic number 2. very hot core causes fantastical expansion of the star. Its size is increase by nigh c quantify . gum olibanum the star becomes a red giant , and the helium impetuous point lasts for several(prenominal) million years. most all red giants be versatile stars.\nWhat happens in the future, again depends on the mound of the star . later(prenominal) years and finis of stars . overaged , low-mass stars . To date, it is not cognize what happens to accrue the stars later on depletion of hydrogen. Since the age of the cosmos is 13.7 b illion years , which is insufficient for depletion of hydrogen go off , the ripe supposition found on data processor mold of the processes overtakering in these stars . around(prenominal) stars cigaret synthesize helium dynamic still in some places, causing dissymmetry and strong stellar(prenominal) winds . In this case, the make-up of a terrestrial nebula does not occur , and the star that evaporates , graceful change surface slight than a brownness dwarf .'