In this thought-provoking episode, renowned physicists Brian Greene and Michio Kaku discuss the scientific and technological factors that make confirmed extraterrestrial visits to Earth highly unlikely. They delve into the immense challenges of interstellar travel, the cosmic timescales involved, and the lack of definitive evidence for UFO sightings. By examining warp drive theories and advanced civilizations, Greene and Kaku bring clarity and skepticism to the question of whether aliens have—or ever will—reach our planet.

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