1. The idea of a Spherical Earth goes back to ancient times. 2. The spherical Earth theory is contemptuously dismissed as " pagan ". 3. The spherical Earth is navigated using flat maps or charts, collected in an atlas. 4. The " Purgatorio " is notable for demonstrating the medieval knowledge of a spherical Earth . 5. His primary aim was to reach children before they were convinced about a spherical Earth . 6. Ancient Greek, ancient Roman and medieval philosophers usually combined the geocentric model with a spherical Earth . 7. To modern historians aware of a spherical Earth , these details confirm the truth of the Phoenicians'report. 8. To modern historians aware of a spherical Earth , these details confirm the truth of the Phoenicians report. 9. The Pythagorean concept of a spherical Earth offers a simple surface that is mathematically easy to deal with. 10. The following are some effects which make real orbits differ from the simple models based on a spherical earth .
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