The document discusses the definition and historical context of UFOs, describing them as unidentified flying objects often linked to alien spacecraft, with reports dating back to ancient times but becoming more prevalent post-1947. It highlights notable UFO incidents from the 1990s, including a Russian crash and sightings over Phoenix, emphasizing the social stigma associated with reporting such events. Additionally, it touches on the phenomenon of crop circles, their historical occurrence, patterns, and increasing complexity in designs, speculating on possible alien origins.

1. UFOs
By:- Shubham S B

2. 1. The Definition of UFO
 any real or apparent
flying object which
cannot be identified by
the observer
 remains unidentified
after investigation
 in popular culture, UFO
is often used to refer to
any hypothetical alien
spacecraft The term
flying saucer is also
sometimes used

3. 2. A brief history of UFOs
 Some reports of unusual aerial
phenomena date back to ancient times
 reports of UFO sightings started becoming
more common after the first widely
publicized U.S. sighting in 1947
 Many more sightings may, however,
remain unreported because of social
stigma around UFOs

4. 3. Shapes of UFOs
Sphere shaped

5. HEMISPHERE SHAPED

6. OVAL SHAPED

7. MISC SHAPES

8. Top 4 UFOs cases in 90’s
 1991 Russian Crash & Retrieval a large
elongated UFO invades Russian airspace.
 After evading Russian MIGs, the object
crashes into the mountains near the China
Border.
 Several expeditions are carried out to find
the mysterious craft.

9.  1992, South Haven
 an alien space craft crashed into a remote
area of Southaven Park in Shirley just
before Thanksgiving, 1992.
 the incident happened just after 7:00 P.M.
on the night of November 24, according to
John Ford, chairman of the Long Island
U.F.O. Network, who said that it has taken
his group six months to do a thorough
investigation.

10.  1995-American West Airline 564
 A cigar-shaped object with a row of brightly
flashing lights along its length was observed over
the Texas panhandle by the crew of a westward
bound America West B-757 airliner on May 25,
1995
 The case was thoroughly investigated by Walter N.
Webb on behalf of the UFO Research Coalition,
who interviewed the crew and air traffic controllers.
Webb also obtained a copy of the Federal Aviation
Administration (FAA) voice tapes of conversations
between airplane and ground during the sighting.

11.  1997-The Phoenix Lights
 Like a scene from a Sci-Fi movie, a huge,
circular object slowly moved over the city of
Phoenix and surrounding areas.
 Numerous photographs, and an abundance of
video film make this one of the best documented
cases in UFO history. Numerous eye witness
accounts recount a large, slow moving triangular
shaped UFO.

12. 1988-Puerto Rico

13. 1989-Nashville, Tennessee

16. Brazil, November 2006

17. California, 2005

18. 4. Crop Circles
 throughout history humans witnessed circles
and other geometric figures made in the soil by
mysterious craft.
 crop circles are a phenomenon that have been
happening as long as crop fields have existed.
 they appear in various crops of growing grain
like wheat, barley and oilseed rape (canola) that
are the most common in England. But they have
also been reported in oats, flax, rye, peas,
potatoes, sweet corn maize and even in rice
paddy fields in Japan.
 Crop circles formations have also been
detected in places covered with wild grass and
undergrowth

19.  mostly they appear during the three main summer
months
 around 250 crop designs around the world appear each
year on average and several thousand have been
documented since records began
 at the beginning of the 1980s, the circles were very
simple
 later the designs of them have become increasingly
much more complex each year. It seems that the
progress of time has also played an important role in the
development of shapes of these master pieces
 many of them which recently appeared are very
complex.
 Naturally, there are many theories trying to explain
crop circles' existence. One of them is alien origin

20. Winchester, Hampshire, Aug 2002 (Steve Alexander)

22. Alton Priors, Wiltshire, July 2002
(Steve Alexander)