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Archive of posts published in the tag: UFO
Feb
25

UFO, definition and history. A-Z index of Cognitio.

UFO, definition and history. A-Z index of Cognitio.

UFO, definition and history. A-Z index of Cognitio. UFO is the acronym of the English Unidentified Flying Object or Unknown Flying Object, which is an unidentified flying object that generically refers to any aviation phenomenon whose causes can not easily or immediately be…