Carl Sagan showing how it was determined the Earth was not flat thousands of years ago

source: youtube

  • Carl Sagan explaining how ancient man discovered the Earth was round... for the junior airmen who think it is flat
  • Carl Sagan showing how it was determined the Earth was not flat thousands of years ago
  • Carl Sagan Proves earth is round using 2200 year old experiment
  • How Eratosthenes deduced that the world is not flat
  • Carl Sagan-Globular earth deduced by Eratosthenes
  • Why we no have a flat earth
Topics: videos , viral , reddit , FlatEarth
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    Alvena Kessler
    Man, my old physics teacher was always saying "all you need is two guys with sticks in the desert", whenever I was over thinking something, and I never knew what the hell he was talking about. Until now.