作业帮急求一篇英语关于UFO或者外星人的文章
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急求一篇英语关于UFO或者外星人的文章
急求一篇英语科普类的文章要关于UFO或者外星人的时间或者其历史等等,500词左右!
急求一篇英语科普类的文章要关于UFO或者外星人的时间或者其历史等等,500词左右!
Of UFO
An unidentified flying object,often abbreviated UFO or U.F.O.,is an unusual apparent anomaly in the sky that is not readily identifiable to the observer as any known object.While technically a UFO refers to any unidentified flying object,in modern popular culture the term UFO has generally become synonymous with alien spacecraft[1]; however,the term ETV (ExtraTerrestrial Vehicle) is sometimes used to separate this explanation of UFOs from totally earthbound explanations.
Proponents argue that because these objects appear to be technological and not natural phenomenon,and are alleged to display flight characteristics or have shapes seemingly unknown to conventional technology,the conclusion is then that they must not be from Earth .Though UFO sightings have occurred throughout recorded history,modern interest in them dates from World War II (see foo fighter),further fueled in the late 1940s by Kenneth Arnold's coining of the term flying saucer and the Roswell UFO Incident.Since then governments have investigated UFO reports,often from a military perspective- and UFO researchers have investigated,written about,and created organizations devoted to the subject.One such investigation,The UK's Project Condign report,notes that Russian,Former Soviet Republics,and Chinese authorities have made a co-ordinated effort to understand the UFO topic and that State military organizations,particularly in Russia,have done "considerably more work (than is evident from open sources)" on military applications which have stemmed from their UFO research.The report also noted that "several aircraft have been destroyed and at least four pilots have been killed 'chasing UFOs'."[7]Unexplained aerial observations have been reported throughout history.Some were undoubtedly astronomical in nature:comets,bright meteors,one or more of the five planets that can be seen with the naked eye,planetary conjunctions,or atmospheric optical phenomena such as parhelia and lenticular clouds.An example is Halley's Comet,which was recorded first by Chinese astronomers in 240 B.C.and possibly as early as 467 B.C.Such sightings throughout history were often treated as supernatural portents,angels,or other religious omens.Some current-day UFO researchers have noticed similarities between some religious symbols in medieval paintings and UFO reports though the canonical and symbolic character of such images is documented by art historians placing more conventional religious interpretations on such images .
On January 25,1878,The Denison Daily News wrote that local farmer John Martin had reported seeing a large,dark,circular flying object resembling a balloon flying "at wonderful speed." Martin also said it appeared to be about the size of a saucer,the first known use of the word "saucer" in association with a UFO.
On February 28,1904,there was a sighting by three crew members on the USS Supply 300 miles west of San Francisco,reported by Lt.Frank Schofield,later to become Commander-in-Chief of the Pacific Battle Fleet.Schofield wrote of three bright red egg-shaped and circular objects flying in echelon formation that approached beneath the cloud layer,then changed course and "soared" above the clouds,departing directly away from the earth after two to three minutes.The largest had an apparent size of about six suns.
1916 and 1926:The three oldest known pilot UFO sightings,of 1305 cataloged by NARCAP.
On January 31,1916,a UK pilot near Rochford reported a row of lights,like lighted windows on a railway carriage,that rose and disappeared.In January 1926,a pilot reported six "flying manhole covers" between Wichita,Kansas and Colorado Springs,Colorado.In late September 1926,an airmail pilot over Nevada was forced to land by a huge,wingless cylindrical object.
On August 5,1926,while traveling in the Humboldt Mountains of Tibet's Kokonor region,Nicholas Roerich reported that members of his expedition saw "something big and shiny reflecting the sun,like a huge oval moving at great speed.Crossing our camp the thing changed in its direction from south to southwest.And we saw how it disappeared in the intense blue sky.We even had time to take our field glasses and saw quite distinctly an oval form with shiny surface,one side of which was brilliant from the sun.鈥
Another description by Roerich was,"...A shiny body flying from north to south.Field glasses are at hand.It is a huge body.One side glows in the sun.It is oval in shape.Then it somehow turns in another direction and disappears in the southwest."
In the Pacific and European theatres during World War II,"Foo-fighters" (metallic spheres,balls of light and other shapes that followed aircraft) were reported and on occasion photographed by Allied and Axis pilots.Some proposed Allied explanations at the time included St.Elmo's Fire,the planet Venus,hallucinations from oxygen deprivation,or German secret weapons.
On February 25,1942,U.S.Army observers reported unidentified aircraft both visually and on radar over the Los Angeles,California region.Antiaircraft artillery was fired at what was presumed to be Japanese planes.No readily apparent explanation was offered,though some officials dismissed the reports of aircraft as being triggered by anxieties over expected Japanese air attacks on California.However,Army Chief of Staff Gen.George C.Marshall and Secretary of War Henry Stimson insisted real aircraft were involved.The incident later became known as the Battle of Los Angeles,or the West coast air raid.
In 1946,there were over 2000 reports,collected primarily by the Swedish military,of unidentified aerial objects in the Scandinavian nations,along with isolated reports from France,Portugal,Italy and Greece,then referred to as "Russian hail",and later as "ghost rockets",because it was thought that these mysterious objects were possibly Russian tests of captured German V1 or V2 rockets.Although most were thought to be natural phenomena like meteors,over 200 were tracked on radar and deemed to be "real physical objects" by the Swedish military.In a 1948 top secret document,the Swedish military told the USAF Europe in 1948 that some of their investigators believed them to be extraterrestrial in origin.
An unidentified flying object,often abbreviated UFO or U.F.O.,is an unusual apparent anomaly in the sky that is not readily identifiable to the observer as any known object.While technically a UFO refers to any unidentified flying object,in modern popular culture the term UFO has generally become synonymous with alien spacecraft[1]; however,the term ETV (ExtraTerrestrial Vehicle) is sometimes used to separate this explanation of UFOs from totally earthbound explanations.
Proponents argue that because these objects appear to be technological and not natural phenomenon,and are alleged to display flight characteristics or have shapes seemingly unknown to conventional technology,the conclusion is then that they must not be from Earth .Though UFO sightings have occurred throughout recorded history,modern interest in them dates from World War II (see foo fighter),further fueled in the late 1940s by Kenneth Arnold's coining of the term flying saucer and the Roswell UFO Incident.Since then governments have investigated UFO reports,often from a military perspective- and UFO researchers have investigated,written about,and created organizations devoted to the subject.One such investigation,The UK's Project Condign report,notes that Russian,Former Soviet Republics,and Chinese authorities have made a co-ordinated effort to understand the UFO topic and that State military organizations,particularly in Russia,have done "considerably more work (than is evident from open sources)" on military applications which have stemmed from their UFO research.The report also noted that "several aircraft have been destroyed and at least four pilots have been killed 'chasing UFOs'."[7]Unexplained aerial observations have been reported throughout history.Some were undoubtedly astronomical in nature:comets,bright meteors,one or more of the five planets that can be seen with the naked eye,planetary conjunctions,or atmospheric optical phenomena such as parhelia and lenticular clouds.An example is Halley's Comet,which was recorded first by Chinese astronomers in 240 B.C.and possibly as early as 467 B.C.Such sightings throughout history were often treated as supernatural portents,angels,or other religious omens.Some current-day UFO researchers have noticed similarities between some religious symbols in medieval paintings and UFO reports though the canonical and symbolic character of such images is documented by art historians placing more conventional religious interpretations on such images .
On January 25,1878,The Denison Daily News wrote that local farmer John Martin had reported seeing a large,dark,circular flying object resembling a balloon flying "at wonderful speed." Martin also said it appeared to be about the size of a saucer,the first known use of the word "saucer" in association with a UFO.
On February 28,1904,there was a sighting by three crew members on the USS Supply 300 miles west of San Francisco,reported by Lt.Frank Schofield,later to become Commander-in-Chief of the Pacific Battle Fleet.Schofield wrote of three bright red egg-shaped and circular objects flying in echelon formation that approached beneath the cloud layer,then changed course and "soared" above the clouds,departing directly away from the earth after two to three minutes.The largest had an apparent size of about six suns.
1916 and 1926:The three oldest known pilot UFO sightings,of 1305 cataloged by NARCAP.
On January 31,1916,a UK pilot near Rochford reported a row of lights,like lighted windows on a railway carriage,that rose and disappeared.In January 1926,a pilot reported six "flying manhole covers" between Wichita,Kansas and Colorado Springs,Colorado.In late September 1926,an airmail pilot over Nevada was forced to land by a huge,wingless cylindrical object.
On August 5,1926,while traveling in the Humboldt Mountains of Tibet's Kokonor region,Nicholas Roerich reported that members of his expedition saw "something big and shiny reflecting the sun,like a huge oval moving at great speed.Crossing our camp the thing changed in its direction from south to southwest.And we saw how it disappeared in the intense blue sky.We even had time to take our field glasses and saw quite distinctly an oval form with shiny surface,one side of which was brilliant from the sun.鈥
Another description by Roerich was,"...A shiny body flying from north to south.Field glasses are at hand.It is a huge body.One side glows in the sun.It is oval in shape.Then it somehow turns in another direction and disappears in the southwest."
In the Pacific and European theatres during World War II,"Foo-fighters" (metallic spheres,balls of light and other shapes that followed aircraft) were reported and on occasion photographed by Allied and Axis pilots.Some proposed Allied explanations at the time included St.Elmo's Fire,the planet Venus,hallucinations from oxygen deprivation,or German secret weapons.
On February 25,1942,U.S.Army observers reported unidentified aircraft both visually and on radar over the Los Angeles,California region.Antiaircraft artillery was fired at what was presumed to be Japanese planes.No readily apparent explanation was offered,though some officials dismissed the reports of aircraft as being triggered by anxieties over expected Japanese air attacks on California.However,Army Chief of Staff Gen.George C.Marshall and Secretary of War Henry Stimson insisted real aircraft were involved.The incident later became known as the Battle of Los Angeles,or the West coast air raid.
In 1946,there were over 2000 reports,collected primarily by the Swedish military,of unidentified aerial objects in the Scandinavian nations,along with isolated reports from France,Portugal,Italy and Greece,then referred to as "Russian hail",and later as "ghost rockets",because it was thought that these mysterious objects were possibly Russian tests of captured German V1 or V2 rockets.Although most were thought to be natural phenomena like meteors,over 200 were tracked on radar and deemed to be "real physical objects" by the Swedish military.In a 1948 top secret document,the Swedish military told the USAF Europe in 1948 that some of their investigators believed them to be extraterrestrial in origin.