Exchanging spokes or Galaxy (Galaxy), the Galaxy is a system that consists of a vast stellar stellar clusters, gas and dust. The sky is also called nebulae and space (Space) included in the same system, because there is mutual gravity. Galaxy is considered as one element of the universe occurred when approximately 18,000 million years ago to approximately that in the universe of galaxies up to 100,000 million stars and that system, including the Sun, which is at the center of the solar system, everyone moving around the center of the Galaxy by gravitational force between.Ngada ngrik with what is at the heart of the Galaxy, which has a very high gravity. Astronomers believe that the black hole (Hole Blank), which is believed to be infinite depth. When dropped into the stuff can't come out. See the stars in the sky are stars that are in our Galaxy or Milky Way Galaxy (The Milky Way Galaxy) are characterized by a similar thin clouds and white frosted around the sky.
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