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Why haven’t we found aliens? A physicist shares the most popular theories. | Brian Cox

Big Think

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Exploring the Mysteries of Extraterrestrial Life and the Fermi Paradox

This chapter explores the mysteries of the Fermi Paradox, questioning why we haven't encountered extraterrestrial civilizations. The speakers discuss various theories including the rarity of life-sustaining planets, the fleeting nature of civilizations, and the possibility of a 'Great Filter' ahead of us in our quest for interstellar contact.

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