Etiqueta: galaxy cluster
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Ho’oleilana
After the Big Bang, the matter in the universe was almost evenly distributed, like a great sea of particles. Gravity tried to put this matter together to form galaxies. But when matter came together, it got very hot, and that heat caused matter to push outward. Thus a kind of chain of «bounces» was created:…
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The Coma galaxy cluster
Galaxy Clusters Galaxy clusters are groups of hundreds of galaxies that are bound together by the force of gravity in a region of space. At the center of a cluster there is usually a huge elliptical galaxy, so massive that its gravitational pull helps keep the rest of the galaxies in the cluster orbiting around…