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unidentified flying object
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Declassified U.S. military video of unidentified aerial phenomena (UAP)
The Flying Saucer as I Saw It UFO
A weathered sign reading "UFO CRASH SITE" and "UFO Museum - 114 N. Main - Roswell" stands in a scrubby desert landscape under a clear blue sky.
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unidentified flying object summary
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Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
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unidentified flying object: Media

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Declassified U.S. military video of unidentified aerial phenomena (UAP)
Learn about an unidentified aerial phenomena (UAP) sighting from this video (known...
Video: U.S. Navy
Is There Proof of Alien Life?
What's really going on in Roswell?
Video: Encyclopædia Britannica, Inc.

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The Flying Saucer as I Saw It
Autographed front cover of Kenneth Arnold's The Flying Saucer as I Saw It...
© Chronicle/Alamy
UFO
An alleged UFO seen from a farm near McMinnville, Oregon, 1950.
Science History Images/Alamy
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