中财网43号令辅导员职责:I'd love to say Hello to aliens...But, do they really exist?
来源：百度文库 编辑：中财网 时间：2024/05/13 11:16:54
I'd love to say Hello to aliens...But, do they really exist?
Aliens? Perhaps the first piture creeping into your mind is the cute image of ET from the film E.T.
But do you really believe there do exist aliens? And do you believe that you may be one of them?
Bomber buzzed: A man contacted the MoD in summer 2002 after a photo he took of a flypast at RAF Coningsby, Lincolnshire, showed 'an unidentified shape ... looking decidedly triangular in shape' next to a Lancaster bomber
Decade of the UFO: Secret files show alien sightings
The West was still in the grip of the Cold War.But rather than scanning the skies for Soviet nuclear missiles, it seems, the British had their eye on a different menace.
Secret documents released yesterday show that the 1970s were the heyday of UFO spotting, with hundreds of people peering skywards for evidence of aliens.
The Sri Lanka doughnut: A doughnut-shaped phenomenon was photographed by a retired RAF officer in Sri Lanka in 2004 and sent to his old bosses at RAF Fylingdales in North Yorkshire. He described it as ‘a ring like a doughnut... orange in colour with a white/cream finger pushed through, the head of the column glowed an orange colour, behind the doughnut was a second cloud of colour’
In April 1979 the Home Office issued guidance to all police forces, fire services and councils about what to do in the event of a ‘nuclear satellite crash’ – code for UFO wreckage from space that could be radioactive.
Oxfordshire mystery: At 40ft tall and in a fetching shade of pink, it is a wonder farmers never spotted it. The sketch above shows a UFO flattening a cornfield, and was drawn by an Oxfordshire resident who said they saw the hovering ball creating crop circles in the area. The craft is adorned with flashing lights and an ankh, the ancient Egyptian symbol of life. The anonymous observer sent the drawing to the MoD in November 1998, with a letter saying: ‘I have developed contact with these craft and their enemy forces.’ The MoD did not investigate
ABDUCTION IN BARNES
In October 1998 a man in Barnes, West London, claimed aliens had landed in his garden and abducted him after he fell asleep and woke to find he had lost an hour.
MoD officials wrote back explaining the clocks had gone forward that night.
It says: ‘There would be a possible radiation hazard... debris from the crashed satellite might be scattered over a very large area, perhaps the greater part of the country.’
People would be ordered to keep 100 yards away from potentially harmful debris and any fragments would be sent to the Ministry of Defence.
A UFO sighting hotline was also set up. The document is among 35 files made public yesterday, containing 8,500 pages of alleged UFO sightings, spacecraft landings, bright lights and alien abductions reported by the public and filed away by the MoD’s Secretariat 2A unit.
As the blockbuster movie Close Encounters Of The Third Kind seized the public imagination, UFO sightings jumped from 435 in 1978 to a high of 750 the following year.
In the early hours of April 16, 1978, the RAF launched an investigation after 17 witnesses claimed extra-terrestrials were at large across southern England in a cigar-shaped UFO. They described lights covering its base, an exhaust and a white cockpit. Some said it fired out flames or a ball of fire.
In November the House of Lords held a three-hour debate on UFOs – the only full debate on flying saucers held in Parliament.
TORNADO ENCOUNTER
An RAF Tornado crew flying over the North Sea in November 1990 saw a UFO as big as a C130 Hercules plane, glowing with a light blue flame and moving at high speed.
The pilot said he had ‘never seen anything like it’.
Lord Clancarty, a self-confessed ‘ufologist’, claimed there had been thousands of mysterious visits. But others said sightings were down to ‘natural phenomena’.
In December 1980 came Britain’s biggest UFO mystery, the Rendlesham Forest incident in Suffolk, when U.S. Air Force personnel apparently saw bright lights descending outside RAF Woodbridge and discovered a small triangular-shaped craft.
But it emerged yesterday that when the MoD trawled its records in 2000, the Defence Intelligence files for 1980-82 that would have covered the incident were found to have been inexplicably destroyed. Those from the years directly before and afterwards survive.
The files also reveal that a forged document about Rendlesham was posted on the MoD website in 2002, claiming that an unknown craft landed, crewed by ‘entities approximately 1.5 metres tall’, speaking in an American accent and with ‘claw like hands with three digits and an opposable thumb’
The MoD noted in a memo: ‘This document is clearly a forgery... this could be rather embarrassing if it ever found its way to a newspaper.’
More recently, 15 unidentified aircraft were detected on radar approaching the UK in the months before 9/11. Just one UFO report was received on September 11 itself.
By 2001 UFO sightings had plunged, with an average of 130 a year until 2007, when the decision was made to prepare the files for public release.
Well, in the belief that there are aliens, what do they look like? Three eyes? No legs? A big mouth? None of them. The answer given by a British scientist is the following:
Is this what an alien looks like? Research claims fossilised bacteria from meteors appear similar to bacteria found on earth - like Titanospirillum velox, above. That suggests life is more widespread
A Nasa scientist believes he has discovered an alien life form which may explain how life on earth started and has called on any scientist worldwide to try and prove him wrong.
The extraordinary claim by Dr Richard Hoover, an astrobiologist with Nasa’s Marshall Space Flight Center, comes after ten years of studying tiny bacteria in meteorites that have fallen in remote areas across the globe.
He explains that travelling to Antarctica, Siberia and Alaska he has studied an extremely rare form of meteorites - CI1 carbonaceous chondrites – of which only nine are known to exist on earth.
Looking at these meteorites under microscopes he said he has found numerous different fossils of bacteria – some which are similar to ones on earth and others which are complete, um, alien.
He suggests that meteors spread organisms around the universe and that life on earth could have been planted by bacteria in an asteroid hitting the planet in its infancy.
In one case he found on a meteorite an organism similar in size and overall structure to the giant bacterium Titanospirillum velox, an organism found here on planet Earth.
He suggests this proves life is more widespread than we first thought.
He told Fox News: ‘I interpret it as indicating that life is more broadly distributed than restricted strictly to the planet earth.
'This field of study has just barely been touched -- because quite frankly, a great many scientists would say that this is impossible.
'The exciting thing is that they [the bacteria] are in many cases recognisable and can be associated very closely with the generic species here on earth.
He added: ‘There are some that are just very strange and don’t look like anything that I’ve been able to identify, and I’ve shown them to many other experts that have also come up stumped.’
Dr Hoover would collect each meteorite stones and break them in laboratory conditions, scanning for fossilised remains.
It was then he made his discovery, identifying one biological remain as having no nitrogen – something that, until now, is found in all living organisms.
The scientist said: ‘If someone can explain how it is possible to have a biological remain that has no nitrogen, or nitrogen below the detect ability limits that I have, in a time period as short as 150 years, then I would be very interested in hearing that.
'I’ve talked with many scientists about this and no one has been able to explain.’
The findings are published in the March edition of the Journal of Cosmology, which has already invited the science community to analyse the results for themselves and write critical responses.
Editor-in-Chief Dr Rudy Schild explained: ‘Given the controversial nature of his discovery, we have invited 100 experts and have issued a general invitation to over 5,000 scientists from the scientific community to review the paper and to offer their critical analysis’
Dr. Seth Shostak, a senior astronomer at the SETI Institute, said there is a lot of hesitancy to believe such finding.
He said, if true, the implications would be far-reaching throughout the fields of science and astronomy. ‘Maybe life was seeded on earth – it developed on comets for example, and just landed here when these things were hitting the very early Earth.’
'It would suggest life didn’t really begin on the Earth, it began as the solar system was forming.’
The findings will need to undergo independent testing before they can be classified as ‘a confirmed signature of life.’
Scientists, he said, will now take the research to the next level of scrutiny, which includes an independent confirmation of the results by another lab, before the findings can be classified ‘a confirmed signature of life.’
Surprising, right? Wait, another surprising thing you have to know... and you'd better be prepared for this :
We're all aliens... how humans began life in outer space
The mystery of how the building blocks of biology came to be on Earth may finally have been solved
As scientific mysteries go, this is the big one. How did life on Earth begin? Not how did life evolve, but how did it start in the first place? What was the initial spark that lit the fire of evolution?
Charles Darwin solved the mystery of life's wondrous diversity with his theory of natural selection. But even he was flummoxed by the ultimate mystery of mysteries: what led to the origin of life itself?
In trying to answer the problem, scientists have turned to the stars, or at least the "builders' rubble" of meteorites and comets left over from the formation of our solar system some five billion years ago. These space rocks, they believe, could help to explain why life began here on Earth.
In fact, a growing body of evidence is now pointing to deep space as the possible source of the raw materials that formed the building blocks of life. The latest study, which focused on a class of meteorites that fell on to the Antarctic ice sheet, also suggests that life's origins may have been extraterrestrial.
An analysis of the meteorites has revealed that these rocks can be induced, under high pressures and temperatures, to emit nitrogen-containing ammonia, a vital ingredient for the first self-replicating molecules that eventually led to DNA, the molecule at the heart of all life.
"These particular meteorites have been preserved in the ice and are found pristine – that is, they show less terrestrial contamination," said Professor Sandra Pizzarello of Arizona State University, who led the meteorite study published in the Proceedings of the National Academy of Sciences.
"What is important is the finding of abundant ammonia. Nitrogen is an indispensable ingredient for the formation of the biopolymers, such as DNA, RNA and proteins, on which life depends, and any theory that tries to explain life's origin has to account for a supply of 'usable' nitrogen," Professor Pizzarello said. "Therefore, its direct delivery as ammonia and in relatively large amounts from the nearby asteroids could have found a 'prebiotic venue' on the early Earth."
Tests have also shown that the nitrogen in the ammonia released by the meteorite is composed of unusual isotopes, indicating an extraterrestial origin rather than contamination from a terrestrial source.
Professor Pizzarello and her colleagues believe that similar meteorites falling to Earth about 4 billion years ago could have produced a constant and replenishable supply of ammonia, and hence nitrogen, which was so necessary for the formation of the first self-replicating molecules.
Previous studies of fossilised microbes in ancient rocks have shown that primitive life must have existed at least 3.5 billion years ago. Yet little is known of the time before that when life originated, except that it must have been very inhospitable.
The planet was bathed in intense ultraviolet light which quickly destroys organic molecules, and was pummelled with meteorites during the "heavy bombardment period" from 4.5 billion to 3.8 billion years ago. However, this bombardment of meteorites may have actually come with a silver lining, given that many of these space rocks would have carried the relatively delicate organic molecules necessary for life to get started.
Earlier studies have already confirmed that meteorites contain many different kinds of organic molecules, such as the amino acids that make up the proteins that are the building blocks of DNA, the molecule of inheritance. But Caroline Smith, the curator of meteorites at the Natural History Museum in London, said this was the first time that a meteorite had been shown to be capable of providing a plentiful supply of nitrogen-containing ammonia, "The early Earth was a very violent place. It was hot and did not have the oxygen we have now so it was not conducive for the presence of molecules needed for life," Dr Smith said.
"Obviously ammonia is an important constituent for the idea that meteorites and other cometary material helped to seed the Earth with the buildings blocks needed for life. It adds a further piece to the jigsaw puzzle."
Making an impact
Scientists estimate between 40,000 and 60,000 tonnes of meteorites and other cosmic debris land on Earth each year. About four billion years ago, during the period of the "heavy bombardment" of the early Earth, the amount would have been much higher. Scientists study meteorites to understand the evolution of the solar system, but these lumps of space rock may also tell them something about the origin of life here on Earth, and possibly on other planets.
The Murchison meteorite
This large meteorite fell to Earth on 28 September 1969 near the town of Murchison in Victoria, Australia. It is one of the most studied meteorites and its value lies in the fact that it was found immediately after it landed, thus limiting the risks of terrestrial contamination that could confuse any chemical analysis. Exhaustive tests on the rock have revealed that it contains a rich variety of organic molecules, such as amino acids, which are the building blocks of proteins, and nucleobases, found in DNA, the vital molecule of inheritance. Many scientists believe that the meteorite provides strong evidence of an extraterrestrial origin of life's building blocks.
The ALH 84001 meteorite
This meteorite was found in 1984 in a region of Antarctica called Allan Hills. There is no dispute that it came from Mars and that it landed on Earth many thousands of years ago, but there is great controversy over claims made in 1996 by Nasa scientists that the meterorite shows evidence of fossilised life forms that may have originated on the Red Planet. The potato-sized rock contains traces of "microfossils" that could have come from extraterrestrial microbes, the Nasa scientists claimed. Others, however, question whether these traces of life exist.
After this quite long story, we see numerous evidences that aliens are not part of Sci-fis. They are also the residents of the universe, living somewhere we do not know, and maybe, watching us,even reading this potic.... Anyway, do you really believe aliens existing there?
I'd love to
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