Galaxy Classification

Introduction : background informationGalaxies can be explained as large systems of stars , dust , gas as well as diverse types of matter that atomic number 18 bound together by gravitational forces to form a single physical mass . As Binney and Merrifield (1998 :34 explain , on the basis of extensive moral imagery surveys that have been carried come to the fore , it is estimated that there ar more than 40 billion galaxies in the universe , that are spread out in a complex large-scale systems for example , clusters , super-clusters . in that respect are also boundaries of colossal empty spaces referred to as voids . The cheer is just part of extragalactic nebula called the Milky Way . This galaxy is a much planate spiral galaxy that could be comprised by more than four hundred billions stars .

Through the use of telescopes , it is thinkable to view these galaxiesGravitational LensesGravitational lenses can be described as galaxies and clusters of galaxies , which are so huge that they score bends to the route of light-colored objects towards their directions , thus they distort the forms of setting galaxies into curves as well as rings . At times these gravitational lenses can regular lead to photos of galaxies and quasars to be seen in symmetrical outlines around them . merely such cosmetic constitution is very rare and just occurs in out of a thousand elliptical galaxiesGalaxy mergesIt has been mention that galaxies comes t ogether to create merges . In such a slickn! ess galaxies can merge in two different ways . One is through forming stars , and the help way...If you want to get a full essay, order it on our website: BestEssayCheap.com

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