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nullnull Unidentified Flying Object学 院：测 绘 学 院 姓 名： 吴 华 玲 ------The World Of Unsolved Secretsnull Have you ever seen a UFO? null WHAT IS UFO?null A UFO is the reported sighting of an object or light seen in the sky or on land, whose appearance, trajectory, actions, motions, lights, and colors do not have a logical, conventional, or natural explanation, and which cannot be explained, not only by the original witness, but by scientists or technical experts who try to make a common sense identification after examining the evidence. nullUFOs (sometimes called flying saucers) became widely discussed only after the first widely publicized U.S. sighting in 1947. Many thousands of such observations have since been reported worldwide. UFO Landing Platform null A UFO SIGHTING REPORT INTRODUCTION nullDate: July, 1993 Location: near Clarendon, Texas, United States Sighting Time: 2:00AM Day/Night: Nighttime No. of Witnesses: 2 Duration: 1 minutenull Witness Background: I am a sales associate for a sales and marketing company and have a sales background which goes back ten years. I am a conservative type of person. I grew up in a christian family with strong morals and values. Views on UFOs, before and after sighting: Before my sighting of a UFO, I was a huge skeptic. I even made fun of people who claimed to have seen a UFO. I thought it was a brain-fart of the human imagination. Boy was I WRONG! I am a believer now. And now I read the stories of others' accounts of UFO experience with great interest and understanding. nullAugust 6, 1997  -  (Mexico City?), Mexico nullJune 18, 2004  -  lake in Wisconsin, USA nullJuly 14, 2004  -  Houston, TX, USA nullSeptember 7, 2004  ---  Zion National Park, Utah, USA nullMay 11, 1990  -  France null July, 2005------ Pyramids at Giza, Egypt   null November 14, 2004 --- Dorchester, Dorset, United Kingdom null RESEARCHnull At least 90 percent of UFO sightings can be identified as conventional objects, although time-consuming investigations are often necessary for such identification. nullFrom 1947 to 1969 the U.S. Air Force investigated UFOs as a possible threat to national security. A total of 12,618 reports was received, of which 701 reports, or 5.6 percent, were listed as unexplained. In 1997 the U.S. Central Intelligence Agency (CIA) admitted that the U.S. military had deceived the American public in an effort to hide information about high-altitude spy planes. These planes, the Lockheed U-2A(美国头号军火商洛克西德-马丁公司(Lockheed Martin)生产的侦察机) and the Lockheed SR-71, accounted for over half of the UFO reports during the late 1950s and 1960s. null Some persons nevertheless believe that UFOs are extraterrestrial spacecraft, even though no scientifically valid evidence supports that belief. most scientists grant that intelligent life may well exist elsewhere in the universe. A fully convincing UFO photograph of a craftlike object has yet to be taken, however, and the scientific method requires that highly speculative explanations should not be adopted unless all of the more ordinary explanations can be ruled out. UFO enthusiasts persist, however, and some persons even claim to have been abducted and taken aboard UFOs. No one has produced scientifically acceptable proof of these claims. null SOME SCIENTIFIC COMMENTS ABOUT UFOnullMost scientists never look at UFO evidence, which leads to their conclusion that there is no evidence… Many scientists considered:null Stanton Friedman: nuclear physicist and leading UFO researcher, author of several books and numerous articles on UFOs. “The evidence is overwhelming that the Earth is being visited by intelligently controlled vehicles from off the Earth.”  nullBruce Maccabee: optical physicist, UFO researcher, author “From my studies of old and recent reports, and from direct involvement with several UFO investigations, I have become convinced that there is something real and new behind the UFO phenomenon.”null John Schuessler, director MUFON (Mutual UFO Network, largest UFO organization in U.S.) “After years of amassing information about Unconventional Flying Objects I have come to the conclusion that we are dealing with a very complex mystery on an international scale.” nullThe discovery of other intelligent life in the universe would be the most important event in human history. Conclusion:null THANK YOU !!!