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Ever wonder if we are alone in this universe?
Over the years, researchers and scientists have scoured government documents in search of proof that life exists beyond Earth and has regularly visited us here.
One set of documents, known as Project Blue Book, includes retired, declassified records from 1947 to 1969 from the United States Air Force (USAF), currently in the custody of the US National Archives.
According to a US Air Force Fact Sheet, a total of 701 out of 12,618 sightings reported t...