Here are the correct matches of astronomers to their accomplishments:
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Was the first to turn his telescope to the skies for astronomical observation. - Galileo Galilei
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Concluded that the Earth was at the center of our universe. - Claudius Ptolemy
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Was a teacher that started working on the problem of planetary motion. His student continued his work and ultimately found the solution, conceiving the Laws of Orbital Motion. - Tycho Brahe
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Concluded that the Sun was at the center of our universe. - Nicolaus Copernicus
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Came up with the Laws of Universal Gravitation. - Isaac Newton
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Came up with the concept of "epicycles" to explain retrograde motion. - Claudius Ptolemy
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Came up with the Laws of Orbital Motion and stated that "all planets orbit in ellipses." - Johannes Kepler