Video: Carl Sagan explains the geometry of our universe
Carl Sagan discusses the curves and warps of space-time. He discusses the possible shapes of space-time. This clip is from Carl Sagan's Cosmos episode 10, "The Edge of Forever."
If you have never seen Cosmos, I strongly recommend it. It's full of great stories like this one. It is available on DVD, in 7 subtitle languages. Purchase links are below.
13 years ago.
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