Spherical Earth

• Flat Earth Model


  It is an old belief model that the earth is plane or discoidal in form.
• Flat Earth Model


  Early Egyptian, Mesopotamian, and Homer (Greek philosopher) believed that the world is a disk in the ocean.
• Flat Earth Model


  Israelites thought that the earth is like a disc floating in water where an arched bowl separates the earth from the heavens.
• Pythagoras


  introduced the idea of the round model of the earth in the 6th century BC.
• Anaxagoras


  observed that during lunar eclipse, the earth’s circular shadow was reflected on the moon’s surface.
• Aristotle


  according to him Earth was also spherical since the moon and the sun were both spherical
• Aristotle


  he said that the North Star is closer to the horizon for places nearer the equator
• Aristotle


  he argued that when the ship sailed, the hull disappeared first, which implied that the surface of the earth was curved.
• Eratosthenes


  he attempted to measure the circumference of the earth.
• Spacecraft Photos


  Satellite photos show that the earth is plainly spherical
• Spacecraft Photos


  Astronauts in satellites orbiting in low Earth orbit personally observed curvature of the planet.
• Lunar Eclipse


  the shadow of the earth formed on the one side of the moon shows a dark circle
• Lunar Eclipse


  The shape that casts in the moon at which direction is it pointed shows spherical shape.
• Time Zones


  The time difference in different places in the world is due to the presence of a time zone.
• Time Zones


  It can only be explained if the world is round and continuously rotating on its axis.
• Riding a plane


  Airplanes are capable of traveling in a straight line without falling off any edges even for a period of time and it can circle the earth without stopping.
• Riding a Plane


  The curvature of Earth on the horizon is noticeable if you travel in transatlantic flight