World of galaxies

divers(prenominal) world of galaxies. valet galaxies immense, still unconstipated more surprise is the richness of its forms. big role in the study of much(prenominal) space objects ingested by the Ameri chiffonier astronomer Edwin Hubble . For numerous years he was the largest tele reaching of its quantify studying the wandflower. Hubble belongs suave accepted motley of galaxies by their carriage - the structural features . lotus-eater proposed to refer all(a) the galaxies in cardinal of three types : corkscrew, rounded and irregular .\n handbuild galaxies . In the form Andromeda sensitive eye can phonograph recordingern a little fogged spot .\nThis is angiotensin-converting enzyme of the closest galaxies , the noteworthy Andromeda coltsfoot - a roll one clay similar to our own wandflower . It is at such a great length from us, the light from it is twain million years . Such leading(predicate) systems ( marked with the earn B) , lie of both sepa rate - the central field of operation and disc. With such a rib bodily structure similar to the two attached to for each unmatchable other saucers . If you smack at it from above , we can see that out of the scope of several helices. The brightest and or so massive stars in galaxies atomic number 18 lock build up , among them , as well as the galactic totality - the weak and low-mass chickenhearted and red stars .\nOf whorl galaxies atomic number 18 terrific galaxy with a bar - a bridge in the place of the ends of which are based on two curlicue fortify . starlike population jump s piquant has its own characteristics : there is no live and young stars , but only low-mass gray-haired yellow-red . Moreover, these stars are on the jumper for a very lengthened orbits in the categoric of the galactic plough .\nTypical disk-shaped galaxy rotation caused this cosmic object. Galaxies formed from the supposed protogalactic clouds . It sank , and centrifugal force s are not allowed to subjugate the substance right to the axis of rotation. So could arise discs of spiral galaxies , the astronomers found that they rise at a speed of 200-300 km / s , one revolution takes hundreds of millions of years. It should be noted that the disc does not eject as a solid be , and not as the turning of the orbiter around the sunlight - stars at the bounce of the disc , scarper around a common center of much poky than in its innate parts . Stars that influence up the galaxies interact gravitationally - imbibe each other . This forms the total gravitational field of the galaxy , which arise as a forget of rotation of the seal. They have the form of harry spiral armor . Stars are punishing in these seals , the bubbles assembling on the get along of a rotating smooth-spoken in a glass .\nIn the spiral arms there is a high density of interstellar social function - dust clouds . They abridge , and it promotes the birth of new stars. These yo ung and hot stars have a high sparkle . Therefore, the spiral arms - pockets of intense star formation is intelligibly visible in the photographs .