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Eratosthenes was born 276 BCE in Cyrene, Lyberia.
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Eratosthenes died 195 BCE in Alexandria, Egypt.
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Ptolomy was born 85 C.E. in Hermiou, Egypt.
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Ptolomy died 165 C.E. in Alexandria, Egypt.
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Copernicus was born February 19, 1473.
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Copernicus studied at the University of Krakow from 1492 to 1496.
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Copernicus traveled two months to reach Italy, where he studied law at the University of Bologna, and studied medicine at the University of Padua. There he began to question the teachings.
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Returning to Warmia, Copernicus spent his free time observing the sky and crafting theories.
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Copernicus was elected as a canon of the cathedral in Frombork in 1497, and took this role in 1510.
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He finished an astronomical manuscript detailing his discoveries and theories, though did not publish it yet due to fear of controversy.
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With the support of Georg Rheticus, a mathematician and professor, he was able to publish his work.
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Copernicus died May 24, 1543.
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Galileo was born February 15, 1564.
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Galileo invented a telescope far more powerful than other devices being used at the time.
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Galileo discovered the four largest moons orbiting Jupiter, disproving the theory that the Earth was the center of all orbits
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Galileo died January 9, 1642.
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Isaac Newton was born January 4, 1643 in Lincolnshire, England.
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Newton published the Mathematical Principles of Natural Philosophy, exploring the laws of motion and calculus.
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Isaac Newton died on March 31, 1727 in London.
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Marie Curie was born November 7, 1867 in Warsaw, Poland.
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Alfred Wegner was born November 1, 1880 in Berlin, Germany.
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In 1893, Marie passed an exam with the highest marks in her class and earned a physics degree
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Wilhelm Roentgen, a German scientist, discovered x-rays, which heavily aided Marie's work.
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In researching elements, she discovered two highly radioactive elements, polonium and radium.
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She received a doctorate degree in physics in 1903, the first woman in France to do so.
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Marie became the first woman to earn a Nobel Prize
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The Royal Society of England grants Mendeleev the Copley Medal
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Harry Hammond Hess was born May 24, 1906 in New York, New York.
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Alfred Wegner died November 1930 in Clarinetania, Greenland.
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Marie Curie died July 4, 1934 in Savoy, France.
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Harry Hammond Hess died August 25, 1969 in Woods Hole, Massachusetts