UFO (Unidentified Flying Object) Reality or Fantasy.
                     UFO (Unidentified 
Flying Object): 
Reality or Fantasy?
INTRODUCTION
• Unidentified flying object (UFO), also 
called flying saucer, any aerial object or 
optical phenomenon not readily 
identifiable to the observer.
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Source: getintopc.com
HISTORY
• UFOs became a major subject of interest 
following the development of rocketry 
after World War II and were thought by 
some researchers to be intelligent 
extraterrestrial life visiting Earth.
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FLYING SAUCERS AND 
PROJECT BLUE BOOK
• The first well-known UFO sighting occurred 
in 1947, when businessman Kenneth 
Arnold claimed to see a group of nine 
high-speed objects near Mount Rainier in 
Washington while flying his small plane.
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RELIABILITY
• UFO reports have varied widely in 
reliability, as judged by the number of 
witnesses, whether the witnesses were 
independent of each other, the observing 
conditions and the direction of sighting.
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INITIAL OPINION ABOUT 
UFO
• The initial opinion of those involved with 
the project was that the UFOs were most 
likely sophisticated Soviet aircraft, 
although some researchers suggested that 
they might be spacecraft from other 
worlds, the so-called extraterrestrial 
hypothesis (ETH).
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PROJECT GRUDGE
• Within a year, Project Sign was succeeded 
by Project Grudge, which in 1952 was 
itself replaced by the longest-lived of the 
official inquiries into UFOs, Project Blue 
Book, headquartered at Wright-Patterson 
Air Force Base in Dayton, Ohio.
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CLASSIFICATION
• From 1952 to 1969 Project Blue Book 
compiled reports of more than 12,000 
sightings or events, each of which was 
ultimately classified as 
• Identified with a known astronomical, 
atmospheric, or artificial (human-
caused) phenomenon
•Unidentified
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THE NUMBER OF UFO
• Meanwhile, the number of UFO reports 
had climbed to a record high. This led the 
Central Intelligence Agency to prompt the 
U.S. government to establish an expert 
panel of scientists to investigate the 
phenomena. 
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EVIDENCE OF UFO
• One committee concluded 
that there was no evidence of 
anything other than 
commonplace phenomena in 
the reports and that UFOs did 
not warrant further 
investigation.
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INVESTIGATIONS OF 
UFOS
• The report possessed alloys and 
compounds purportedly attained from 
UFOs that were of unidentifiable nature, 
but many scientists remained skeptical 
about this claim.
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Source: getintopc.com