Carl Sagan's Cosmos: A Personal Voyage (1980) Full Documentary
5:00
Carl Sagan's Cosmos: A Personal Voyage (1980) Full Documentary
Mar 9, 2020
filmsforaction.org
41K views · 1.4K reactions | A wonderful clip of humanist and cosmologist, Carl Sagan, on the Greek Polymath, Eratosthenes, and his endeavour to measure the circumference of the Earth. In doing so, Eratosthenes proves the Earth's curvature, over 2200 years ago. | Humanists UK | Facebook
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41K views · 1.4K reactions | A wonderful clip of humanist and co…
41.5K views3 weeks ago
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