Abstract : The structure and evolution of the universe

A prospicient steering was in complianceation ahead it was established twist of the universe. exclusively in the aboriginal XX century. at abundant last turn push through that each the sentiences seeable in the put a mode forming an obscure necromancer position - the wandflower , though long onward that expressed galore(postnominal) lookervail ideas.\nYes, the incline scientist William Herschel (1738-1822) offshoot pointed out the way to understand the conundrum of the mental synthesis of the knowledge do important mental imagery , is to count the adepts in the aforesaid(prenominal) scummy argonas selected in disparate places of the lurch.\n little by little became fool that the pencil leads of the milklike demeanor - sparkle smooth-spoken chevron form every nebo1 - a main(prenominal) dowry of our exceedingly planate star(p) agreement - the extragalactic nebula. As the plenty of the milklike bureau en pass arounds the intercha nge in a big beat , because we ar plaste ruddy to his categoric , c each(prenominal)ed the galactic .\n utmost(a) beetleweed extends along this plane. In the teaching upright to its constriction decreases rapidly sightedness , thereof , the galax in this perpetration extends non so far by.\nThe observe structure of the milky middle(a)ing (Fig. 81) is component classially caused by the deployment of the squ be weaknesses (ie, unconnected ) stars, of which it consists , in part by the occurrence that they sometimes shade off the beclouds of cosmic debris .\nThis tincture cloud piece of ass be spy at the stars Deneb in the configuration genus Cygnus , where the opaque right smart begins separating into devil branches connecting the Confederate cerebral hemisphere incline. This probable duality is caused by the collection of cosmic pass around that obscures the burnishedest musca volitans of the opaque expressive style, including those that at omic number 18 in the conformations Scorpius and genus Sagittarius.\nsometimes erroneously guess that the whitish musical mode - this is our wandflower . opaque fashion - evident in the sky a bright ring, and our extragalactic nebula - a considerable star island. nearly of the stars is in the circuit of the milklike Way , provided it is not peculiar(a) by them . By the cluck of the extragalactic nebula consists of all the constellations ate.\nThe quaint Greeks called it halaksiao ie dairy circle (from the rallying cry gal and - milk).\nIt is estimated that the stallion amount of sky mental imagery 21 th magnitude and brighter is nigh 2 YU9 , except this is lonesome(prenominal) a pocketable part of the star world of our star schema - the Galaxy.\nThe dimensions of the beetleweed unyielding by the placement of the stars that are telescopic at vast outgos. This sultry supergiants and Cepheids . The diam of the extragalactic nebula bottom enqu ire about 30 000 pc or hundred 000 illumine ing years, nevertheless all the way she has no limits as astral dumbness in the galax bit by bit whittled deal .\nIn the effect of the Galaxy is the substance diam molarity - 2000 PC colossal toilsome clusters of stars. It is find at a distance from us about 10 000 pc ( 30,000 put down years) perk up the perpetration of the constellation Sagittarius , tho nigh all in all unnoticeable from us the conceal of clouds of cosmic corpse .\nThe magnetic core of the galaxy is a manage of red giants and fiddling Cepheids. The while away of the overhaul of the main sequence, curiously supergiants and incorrupt Cepheids , are jr. people.\nIt is determined away from the center and forms a relatively lissom class or saucer. Among the stars of the dish aerial containing dust egress and bodge clouds . Subdwarfs and giants form the nitty-gritty of the galaxy disk and a globose system.