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Early Astronommers : - Coggle Diagram
Early Astronommers :
Galileo Galilei 
Galileo asked questions, made observations and tested his theories.
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He discovered that the Milky Way is made up of millions of stars and he discovered Saturn’s rings and Jupiter's moons.
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Al-Sufi
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he located and identified more than 1,000 different stars.
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Nicolas Copernicus
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Johannes Kepler
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Aristotle
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His writings covered a wide variety of subjects, such as logic and astronomy