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Carl Sagan explains how the ancient Greeks knew the Earth was round and calculated its circumference over 2,000 years ago. Eratosthenes was the great Greek who accomplished this. Today, flat earthers have no respect for these great minds who came before us.
Carl Sagan was likely Donald Menzel's successor in Majestic 12- the top secret organization to cover up UFOs. Sagan knew the secrets of UFO and ET bodies, reality but he did more to suppress the truth about UFOs than almost anyone. He was a Jewish professor of astronomy at Cornel University.
This is a FAIR USE of the video at https://www.youtube.com/watch?v=8hZl3arO7SY





