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Michio Kaku’s Parallel Worlds: A Journey Through Space & Time J. Allen Hynek, Jacques Vallée, Stanton T. Friedman, Luis Elizondo, Leslie Kean, Nick Pope, Carl Sagan, Frank Drake, Sara Seager, Michio Kaku, Jill Tarter, Avi Loeb, Robert Zubrin alien life, ufo sightings, space exploration, extraterrestrial evidence, cosmic phenomena, uap encounters, secret files, government disclosure, alien technology, advanced propulsion, space travel, interstellar communication, alien civilizations, cosmic mysteries, space agencies, alien abduction, scientific research, astrobiology findings, intergalactic travel, alien theories, spacecraft design, theoretical physics, space missions, alien encounters, ufo research, public disclosure, unexplained aerial, space tech, alien habitats, cosmic intelligence, ufo analysis, space colonization, alien biospheres, extraterrestrial signals, ufo documentaries, space telescopes, astrobiology research, alien ecosystems, ufo declassification, extraterrestrial research,
