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Eratosthenes measures the Circumference of the Earth, and was by low estimates, only 900 miles off.
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Claudius Ptolemy was a Mathematician and Astronomer who cataloged a thousand stars including their position, brightness, and constellations that would define Astronomy for 1000 years.
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Nicolaus Copernicus was the first Scientist to suggest a Heliocentric model of the solar system. A system where the sun was the center of the solar system, not the earth.
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Tycho Brahe was a Danish astronomer who is best known for his precise observations before the invention of a telescope
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Johannes Kepler is best known for discovering that the Planetary orbits were elliptical instead of circular as Copernicus had believed
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Sir Isaac Newton is best known for his theory of Universal Gravitation, as well as his three laws of motion, which lead to the term Newtonian Physics.
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Albert Einstein was a German Born Physicist who is Best known for his theories of relativity, which Shapes our understanding of Science to this day
