Galaxy Classification

Introduction : background informationGalaxies washbowl be explained as large systems of stars , dust , gas as advantageously as divers(prenominal) types of matter that are bound together by gravitational forces to form a single physical mass . As Binney and Merrifield (1998 :34 explain , on the basis of extensive figure surveys that have been carried taboo , it is estimated that there are more than 40 billion galaxies in the universe , that are spread forth in a complex large-scale systems for example , clusters , super-clusters . in that respect are also boundaries of huge empty spaces referred to as voids . The cheer is just part of galax called the Milky air . This galaxy is a much flattened spiral galaxy that could be comprised by more than 400 billions stars . Through the handling of telescopes , it is practical to view these galaxiesGravitational LensesGravitational lenses can be described as galaxies and clusters of galaxies , which are so huge that they cause bends to the travel plan of sluttish objects towards their directions , thus they distort the forms of backdrop galaxies into curves as well as rings . At times these gravitational lenses can until now lead to photos of galaxies and quasars to be seen in symmetrical outlines near them . and such cosmetic arrangement is very rare and nevertheless occurs in out of a thousand elliptical galaxiesGalaxy mergesIt has been recognise that galaxies comes together to create merges . In such a hook galaxies can merge in two different shipway . One is through forming stars , and the second way...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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