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Ptolemy is the astronomists most known for his theory of the Earth being the center of the universe. (He actually lived in 90 AD, not 1000)
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Copernicus is the astronomists most known for his theory of all the planets revolving arouns the sun.
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Brahe is the astronomist most known for his theory that the sun was the center of the universe.
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Galileo is the astronomist most known for his discovry of Callisto, Europa, Ganymede and Io.
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Kepler was an astronomist most known for his discovery of Keplerian telescope.
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The first time the moon was photgraphed through a telescope was in 1609 (speific date: unknown) by Galileo on 20x magnification thorugh a telescope.
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Sir. Isaac Newton created the first reflecting telescope in 1668 (specific date: unkown) which was a prototype of a design that later became known as the "Newtonian Telescope."
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In 1937 (specific date: unknown), was created by Grote Reber in his backyard in his small town of Wheaton, Illinois.
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The first telescope with multiple mirrors was creayed in 1979 by Aden Meinel, but remade in 1998 by Roger Angel of Steward Observatory at the University of Arizona.
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The hubble space telescope was a telescope created by Edwin Powell Hubble and is still fully operatable after 25 years.