Humans have been spotting — and remarking on — mysterious forms in the sky since the beginning of recorded history, but author Garrett Graff traces the "modern age of UFOs" to a flurry of sightings ...
INDIANAPOLIS (STACKER) — When pilot Kenneth Arnold took off from Chehalis, Washington, in his single-engine airplane one afternoon in June 1947, he was looking for a lost military aircraft that had ...
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