Greek Astronomy : The Contribution Of The Ancient Greek Astronomy

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Ancient Greek Astronomy Imagine if the ancient world didn’t make any discoveries and the people of today had to start without any prior knowledge. In about 500BC the ancient Greeks had an explosion of astronomical discoveries. The ancient Greeks wanted to know the answer to one big question; how does the universe work? The ancient Greeks contributed to astronomy through the discoveries about Earth, the universe, and the tools they used. The ancient Greeks contributed to astronomy through their discoveries about Earth. The first discovery about Earth is that it is spherical. During a lunar eclipse (when Earth is between the sun and moon) two Greek astronomers Empedocles and Anaxagoras found the Earth's shadow on the moon. They saw that the shadow was clearly round (Library of Congress). This is evidence that the Greeks contributed to astronomy through the discovery that Earth is not flat. Another Greek astronomer tried to figure out the size of Earth. Aristarchus of Samos used the size of Earth's shadow on the moon during a lunar eclipse and tried to scale the number to the real size (Library of Congress). This supports that Aristarchus of Samos contributed to calculating the size of Earth because he gave astronomy part of the equation. One more astronomer tried to find the size of Earth. Eratosthenes measured the shadows cast in Alexandria and Syene to find the angle of Earth to the sun (Library of Congress). This is proof that the Greeks contributed to astronomy by
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