Ptolemy (90-168 AD)
Ptolemy lived from 90 to 168 AD.
He used measurements of the sky to create his model of the Solar system. This model had the earth at the centre and all the planets and the sun orbiting around it. |
This is Ptolemy's idea of the Solar System, where the Earth is in the Centre. This model is called geocentric. What is similar to our present ideas about the Solar System? What is different? |
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