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In the Heliocentric model, Copernicus concluded that all the other planets revolved around the sun. Saying that the sun was the center of the Universe.
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Galileo was born in Pisa, Italy. He was the first out of 6 children. HIs full name is Galileo di Vincenzo Bonaiuti de' Galilei.
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On November 11th, 1572, Tycho Brahe spotted an unusuall star up in the sky. He wrote in his journal about the star. He clames that it was right above his head and shined as bright as Jupiter.
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Tycho Brahe said that he was the fist to view this comet. He drew sketches in his notebook that looks like the comment was close to Venus. In his sketches it says that the earth is at the center of the solar system. The sun and the moon will orbit with all the other planets around the sun.
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Tycho Brahe and Johannes Kepler worked together. They both analyzed Tycho's observations of Mars.
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The first known telescope was made in 1608. It consist of a complex lends and a concave eyepeice.
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In 1609 Galileo made improvements the the telescope. He mande one with alomst 3x magnification than went up to about 32x the mafnification. On August 25th he first demonstrated his very first telescope to the Venetian Lawmakers.
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Galileo did not invent the telescope, but he was the first to use it to look at the stars. Before telescopes were used to look acorss a battlefeild.
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Sir Isaac Newton was wondering around a garden with his mother, Rumor has it that that he saw and apple fall and gave him the thought that something had have to pull on it to make it fall. Others say that the apple actually hit him on his head and gave him the idea of gravity, but thats not true.
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The publication of the first calculas book occured in this year. Theis made it possible by a man named Marquis de L'Hopital
