This episode proposes that some advanced weapon technologies currently in development, such as laser and sonic weapons, are rediscovered technologies used by advanced beings in the past. Also discussed are theories that aliens provided gravity manipulation devices to help man construct colossal stone structures around the world.
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ancient aliens, mystery, watch mystery documentaries online, watch mystery documentary, History Channel, Kevin Burns, documentary, free, watch, online, series, episode, the series, Alien Tech, alien, tech, technology, weapon, development
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