Questions tagged [carl-sagan]

Carl Edward Sagan was an American astronomer, astrophysicist, cosmologist, author, science popularizer, and science communicator in astronomy and natural sciences

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Is this video by Carl Sagan?

I found a video a video on youtube : https://www.youtube.com/watch?v=Ugyrzr5Ds8o Carl Segan on Hindu Civilization, Can anyone confirm if this footage is really from Carl Sagan?
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What is the commonly accepted mechanism that causes people to experience pareidolia?

I often see cases of pareidolia reported in the news, on blogs, and even here. I think remember reading in Demon Haunted World by Carl Sagan that this had an evolutionary origin (i.e. if you see a ...
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Does Fermi's paradox imply that civilizations will self destruct inevitably in a short time?

We should be able to estimate the number of detectable extraterrestrial civilizations in the Milky Way galaxy according to the Drake equation: By plugging in realistic values we obtain the result ...