Helping to pave the way…

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Presentation transcript:

Helping to pave the way…

Aristotle 340 B.C Famous philosopher Said earth was round EVERYTHING IN THE UNIVERSE REVOLVES AROUND THE EARTH- “Geocentric Model”

Eratosthenes Eratosthenes (276-194 B.C.)- great Greek mathematician who determined the circumference (distance around) of the Earth using shadow observations. Click on Eratosthenes

Ptolemy 100-170 A.D. Greece Latitude & longitude Counted the stars Created star tables to help explorers (Columbus) Geocentric Model Ptolemy Aristotle and Ptolemy

Geocentric Theory The idea that the Earth was at the center of the universe. Aristotle and Ptolemy strong supporters, along with church officials A belief widely accepted for over 1500 years

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