Who remembers when Carl Sagan debunked flat earthers with a piece of cardboard and Ancient Greek physics? This was vintage Sagan from his regular TV series the COSMOS. Sagan hosted the original version of TV's "Cosmos" in 1980. It was revived in 2014 with astrophysicist Neil deGrasse Tyson. In the first episode of "Cosmos," Sagan easily proved the Earth was a sphere using a piece of cardboard, some sticks, and the work of an ancient Libyan-Greek scholar, Eratosthenes. Sagan explains how Eratoste
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That Time Carl Sagan Debunked Flat Earthers Using a Simple Piece of Cardboard on COSMOS — GeekTyrant
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16K views · 1K reactions | 85 years ago today, our co-founder Carl Sagan entered this world and changed the way we think about our place in the universe. | The Planetary Society | Facebook
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Remember when 'Cosmos' host Carl Sagan debunked flat Earthers with a piece of cardboard?
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