Title Bar - Cosmology

Background: Contemporary Expansion

Today, astronomers have determined that the universe is not static, because we can see the red shifts of galaxies which show not just random motion from galaxy to galaxy, but huge expansions of the galaxies within the universe in all directions away from the Earth. Actually, since the galaxies that are farther away are expanding faster in all directions than the ones near Earth, the universe is expanding in all directions equally. In other words, since the time of Copernicus, who asserted that the Earth was not the center of the universe, astronomers have believed that the Earth is not an extraordinary place in the universe. There should be nothing special about the conditions surrounding the Earth or its location in space. For this reason, astronomers believe that the Earth is not at the center of the universe.

The notion of simultaneous expansion from all points is a difficult one to grasp, but a few simple demonstrations may help clarify this concept.

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