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미확인 비행물체의 역사와 현재 - UFOs: Scanning the Skies - University of Michigan MOOC 강의대본 편집 - 67 Pages
The history and cultural phenomena of unidentified flying objects (UFOs). A range of possible explanations of UFO sightings. UFO reports and ufology, the study of UFOs. Basic techniques used to analyze videos of UFOs. UFOs as they’re connected to a larger discussion of science and society.