Celestial spheres

Science Notes Ancient Models of the World Egypt Thought world was flat Thought sky was a flat plate supported by mountains Thought the sun traveled along the Nile India Thought world was circular disk surrounded by and ocean Thought the center of the world was a mountain Thought the sun went around the mountain once a day In the nighttime it went behind the mountain and came out in the morning Greece Thought Earth floated in the ocean like a cork One man thought Earth was a cylinder with a rounded top that floated in the air Thought that beyond the sky was a region of fire The sun, stars, and moon were holes in the sky, through which the fire could be seen NOTE: All of these incorporate local features General Astronomy