PHYS 284 Lecture Notes - Lecture 1: Milky Way, Virgo Supercluster, Galactic Center
5 Apr 2018
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Document Summary
Our solar system belongs to the huge disk shaped collection of stars called the. Galaxy: is a great island of stars in space, held together by gravity and orbiting a common center. The milky way is a large galaxy containing more than 100 billion of stars. It is one of the two largest amongst more than 70 galaxies, most of them small making them local group. Groups of galaxies with many more large members are often called galaxy clusters. Our solar system is located a little over halfway from the galactic center to the edge of the galactic disk. The regions in which galaxies and galaxy clusters are more tightly packed are called superclusters, which are essentially clusters of galaxy clusters. Our local group is located on the outskirts of the local supercluster. All of these structure make up our universe.
