One up here in Alexandria and one down here in Syene. He explained on a 1980 episode of his popular TV series Cosmos and used a cardboard map to elaborate on the experiment Eratosthenes first conducted before he set out to determine the circumference of the Earth all those moons ago. Well, according to an experiment conducted by astronomer, cosmologist and astrophysicist Carl Sagan, the idea of the Earth being in the shape of a circle can be easily proven just by merely tracking shadows.
If the Earth looks flat while walking on it, and it feels flat, then it must be flat, right? The conversation is buzzing with people on Reddit forums like r/flathearth and on Twitter who makes claims that satellite photos of Earths and other facts that have proven Earth's roundness are part of a round Earth conspiracy comprised by the government. iStock / Getty Images PlusĪnd yet, the argument that the Earth is flat is one still made by many people, all these thousands of years later.
Background of the planet earth viwed from satellite, this image is generated with 3D software and Elements of this image are provided by NASA.
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