The Sun glyph in Astronomy: the 9 planets and beyond

The Moon glyph in Astronomy: the 9 planets and beyond

 

 

 

The Universe Within 500 Million Light Years

 

 

 

page 162 in your handmade, personalized Fine Art Book You and the Universe

Galaxies, like stars, also form groups. The Milky Way and the Andromeda Galaxy belong to such a group of 20 to 30 galaxies called the Local Group. And finally, clusters of galaxies group in clusters of clusters, called superclusters. Our Local Group is about 50 million light years from a supercluster of about 2000 galaxies called the Virgo Supercluster.

Each dot on the map of the universe above represents an entire galaxy of hundreds of billions of stars, and we, the Milky Way, are at the center. Superclusters are not isolated in space, but together with many other smaller concentrations of galaxies form parts of extensive "walls" of galaxies that it turn surround large voids. On this scale our own Milky Way galaxy is very insignificant, since there are several hundred thousand large galaxies within 500 million light years of us. And there are estimated to be hundreds of billions of galaxies in the universe.

 

 

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